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PaulR : Pilatus PC-9 : 25/03/2019

More photos: Bf 109 built from the Warbirds plan, OZ7023, converted to electric [more pics 006-008].
AdamEdwards : Warbirds : 25/03/2019

More photos of what I've been building from your fine site. Once again converted to electric: the Shrike 10, OZ10519 [more pics 004-006].
AdamEdwards : Shrike 10 : 25/03/2019

Bonjour, Quelqu'un vient de me signaler que l'un de mes modeles figure en telechargement sur votre site. Surprise... ;) Bons vols!" Hello - someone has just pointed out to me that one of my plans is available for download on your site. Surprise... ;) Happy flying!
BernardMunoz : Empirix 1 and 2 : 25/03/2019

A couple of photos of a recently completed Veron Goblin from your OZ 3861 plan [model photo & more pics 003]. Test glides in the garden look good, waiting for the mutton to be removed from the meadow for test fights.
TrevorT : Goblin : 25/03/2019

Today I saw my Airknocker on Photo Gallery, and this week I have made a trunk to make it easy to transport it to the flying field. I had to cut the wing in two halves which was not so easy but with a metal sawblade it went OK. A beam of steel will keep the wing-halves together. Here are some images that show the trunk, lid and rubberband lock of the lid [more pics 010-012]. Best wishes to you from Sweden.
OweCarlson_Sweden : Airknocker : 25/03/2019

Thanks Steve; that's a big help. The propeller block dimensions are shown at the bottom of the second page that you added.
Simon Blake : Streak : 23/03/2019

Hi Anon, the wings are aligned, and held at the right angle and dihedral, by the steel piano wires in the brass tubes. The small magnets are simply to hold the two wings touching each-other, and stop them from separating and sliding off the piano wire joiners. Other methods to hold the port and starboard wings together in the middle are clear sticky tape across the join, or to fit some small wire hooks to the wing panels and put an elastic band between the hooks.
VinceDay : Avro Avian : 23/03/2019

The magnets do the job very well, but if it bothers you you could doubled up. As long as the magnet are touching or are very close you should have no problems using what is shown.
Tom Decker : Avro Avian : 23/03/2019

Hi Alan, this plan and instructions are from a Great Planes pre-cut kit, and so the plan doesn't have to show all the formers - as they are already cut-out. The dimensions of the missing ones can be derived from the fuselage top and side views, and the sketches of the parts in the instructions. The dihedral braces are in these sketches, as well. With a bit of detective work most of missing info can be determined - even the undercarriage leg shapes! It looks like a good model.
VinceDay : Slow Poke 40 : 23/03/2019

Are there any outlines for formers F2, F3, F5 and wing W2? I was also looking for any dihedral details. I may have missed all the above. Thanks
Alan : Slow Poke 40 : 23/03/2019

Hi Steve, If you want to thicken the plot, I just measured the Skyraider plan in the Model Builder 72 Nov mag using the scale bar and the wingspan I get is 28", not the 26" Walt writes in the article! All I can assume is that Mr Mooney was having one bad week :-) Cheers,
Miguel : Douglas AD-4B Skyraider : 22/03/2019

Simon, I have added 'article_2' file which is a scan of the missing 2 pages of drawings that came with the article, as published in 1942. There is a little bit more info on there, but it looks to me like it is mainly just on how to shape the blank for carving the single bladed prop. Hope that helps.
SteveWMD : Streak : 22/03/2019

Does anybody have the propeller block details for this model? Only the blade outline is shown on the plan. The propeller block would have been shown either on the original magazine plan or as a separate drawing in the article. It would be really helpful to have.
Simon Blake : Streak : 22/03/2019

Are the wing magnets sufficient to hold the wings on or could they be doubled up to provide more security?
anon : Avro Avian : 22/03/2019

Still have this plane somewhere in the loft. I converted a short nose version to electric. This is the long nose version and the short nose version [model photo & more pics 004-006]. The short nose version is the one I converted to electric.
FredCoulson : Grumman XF5F-1 Skyrocket : 20/03/2019

Hi - please find attached some pictures from my Schiffermuller build for Outerzone planID: oz5683 [model photo & morepics 003, 004]. Keep up the great work!
AndrewSquires : Schiffermuller : 20/03/2019

Interesting. Looking closely at the two versions, I can see that this one here has some detail that the MB plan doesn't. The 'Marines' stencil on the fuselage rear is different, and all the fuse formers show wood grain that's not on the MB plan. I wonder if this is an older version of the 1967 plan, and MBs was derived later. Makes little difference, I guess. I'm tempted to scale this up and list this plan as 26 inch wingspan. It seems a more interesting (and practical) design that way.
SteveWMD : Douglas AD-4B Skyraider : 20/03/2019

Hi Steve, This Mooney Douglas AD-4B Skyraider was originally published in MB 1972-11 (it's in your RCLibrary) but what you have in OZ appears to have been edited somewhere along the way, for instance the scale 'ladder' in the label is gone. When I saw the mag drawing with this scale ladder it became obvious this was no Peanut and so my brain got into Obsessive Compulsive mode. Walt says in the article this was designed to 26" wingspan in 1965, but in 72 he shot a half-scale drawing to - surprise! - 13" with a few balsa thickness changes duly noted in the MB drawing. Cheers, and thank you for your excellent stewardship :-)
Miguel : Douglas AD-4B Skyraider : 20/03/2019

Hi Mary, Steve - OZ 1323 KeilKraft Westland Lysander 18" (coloured tissue only) to comply with our Kit Scale competition rules [more pics 006-010].
MikeMulholland : Westland Lysander : 20/03/2019

Attached are pictures of the Wicko Wizard I recently built from plan 10066 [model photo & more pics 003-009]. This model was started as part of the "Outerzone No Picture" build-off in the Vintage & Old-Timer Designs forum on RC Groups, the build thread is at: https://www.rcgroups.com/forums/showthread.php?3159292. I completed the model after the build-off had ended. Finish on the model is printed Esaki tissue chalked white on the back side. It came out just over 44g without the rubber motor, and flew well right off the board. Best flight to date is 1:47 on a 10g trimming motor (2x20" loops 3/16" rubber). That flight was almost the demise of the model, as it narrowly missed being hit by a bus! Video at: https://www.youtube.com/watch?v=lFcYkCw17YA. Thanks again for all you do to keep these plans available!
MikeKelly : Wicko Wizard : 20/03/2019

Pretty Machine!
bobbylang : Kapitan : 19/03/2019

Kindly post these pics of my little Quiver, powered by a little R/C Thunder Tiger glo engine, .7 with RC carb [model photo & more pics 006, 007]. Covering is Solite.
SybrandStrachan : Quiver : 19/03/2019

Like most Goldberg kits you have a top and side view to take measurements and make formers.
5695Q : Ultimate 10-300 : 17/03/2019

Have added the manual, which on page 4 includes a parts identification sheet. So that might be some help. But no, the fuselage formers are not shown on the plan.
SteveWMD : Ultimate 10-300 : 17/03/2019

On the plan, it misses the frames of the fuselage.
anon : Ultimate 10-300 : 17/03/2019

This is the model I learnt to fly RC on back in 1980. Fond memories!
brinesharks : QB 40S : 17/03/2019

Seeing the query regarding the prop size on the Pilatus PC-9, I realised examination of the accompanying photos indicate the prop diameter to be approx 8 inches, by comparing wingspan with the prop size. Cheers,
Alan : Pilatus PC-9 : 16/03/2019

Fantastic. I built this as a 14 year old. What a flyer!
mel : Gaucho : 15/03/2019

Are there any details available for the prop and rubber used on this lovely model?
Paulr : Pilatus PC-9 : 14/03/2019

Here is a small collection of photos of my Veron Chipmunk model [model photo & more pics 003, 004]. This model flew very well but only with quite a bit of rubber installed. I don't know what happened to it as it's well over 30 years ago, but I do recall Airspan wasn't available then, so that nice yellow must have been white lightweight Modelspan which I dyed in a large but shallow tin which our daughter made for me in her school metalwork class. I still have some which hasn't faded one bit.
JohnFrench : Chipmunk : 13/03/2019

Hi - the finished version of my Sirocco [more pics 005]. It flies very well.
JulienVermeire : Sirocco : 13/03/2019

I'm so happy to see this plan added to Outerzone. I've been looking for this plan for a while. My dad built one for me as a kid, you guys know the rest...
Timthemodelbuilder : Miss World's Fair : 13/03/2019

I made this plane back in 1990. I powered it with the only buggy motor and battery at my disposal. Disappointingly, it turned out underpowered, so I substituted a small diesel engine - a Merlin, I think. This worked, er, rather too well. It shook the rc battery loose mid-turn. Having watched the battery fall to ground, the (Diesel) Haze flew off over the horizon. Two years later, I was recounting the story to a local and they exclaimed that they knew who found it! A few weeks later, I was reunited with the fuselage, and still have it displayed in my man-cave!
Crashrr : Electric Haze : 12/03/2019

To complete your plan, I send pictures of my JUNAK 1964 - Jaroslav Fara [model photo & more pics 005-016]. I built the model as planned on Outerzone. I installed the MVVS 1,5 cc engine. The model will be published at http://www.khmm.cz/
KarelSlupsky : Junak : 12/03/2019

Thanks, have fixed this now.
SteveWMD : Cardinal : 12/03/2019

Not "Civil", not "scale". This model came out at least 4 years before the Cessna Cardinal was introduced, if someone is thinking it is based on that...
Dave D : Cardinal : 12/03/2019

I'd like to share some photos of my model built from the Lee's Hobbies kit back in '08 [more pics 003-005]. Still in great shape with a contest in Nijmegen, Netherlands in 2016 (Kit Scale at the 2016 IIFI). All markings are tissue with some tissue printing on the fuselage to represent the cowl louvres. Weight w/o rubber: 11.5 grams. A good performer, which I have not yet fully exploited. A great little flyer.
PeteBrecker : Gordou Leseurre C1 : 11/03/2019

I'm just building a new Eliminator so thought that you might like a photo for the plan page [more pics 003]. I shall take another when it's covered.
DannyMZ : Eliminator : 11/03/2019

Added some nice pics of the Bronco, thanks to jgwuzdz [model photo & more pics 003-005].
Mary : OV-10 Bronco : 11/03/2019

I am changing the title of this listing oz6405 from 'Crossbreed' to 'Pee-Tee Sportster'. Also changing the download filenames from Crossbreed to Pee-Tee Sportster. The previous title of Cossbreed was, I think, unhelpful and misleading.
SteveWMD : Pee-Tee Sportster : 11/03/2019

Hello, the blank frame of Fillon's Wakefield (oz 2600) is now finished. Enclosed a photo of it [more pics 003]. Thanks for your great site.
AndreasKoch : 1937 Wakefield : 11/03/2019

I had the same experience as andyb but in my case I cured it with good old fashioned dowels and rubber bands...
rcarter : Electric Haze : 11/03/2019

I think you're right, I think this one needs scaling up to 56 in wingspan.
SteveWMD : Miss Laura : 11/03/2019

Head on plan 34mm, 2"' wheels measure 1-3/4". Plan is not full size.
Paul A : Miss Laura : 11/03/2019

Electric Haze needs some reinforcement to prevent the wing peg pulling out in flight - I speak from bitter experience, back in about 1988-1989. Maybe a couple of doubler ribs on W1, possibly with some glass/epoxy reinforcement.
andyb : Electric Haze : 10/03/2019

OS 40 fp and OS 40 fsr had the same cyl. head parts number. My OS 40 fp has 36mm dia. head, check on plan measures.
Pit : Miss Laura : 10/03/2019

I may not have explained the issue with the plan very well, the issue is the wingspan of the original model was 56", the PDF version presented here is 52", could something have gone wrong with the conversion to PDF.
Paul A : Miss Laura : 09/03/2019

A shorter wing half is not shown on the plans so naturally you double what is shown.
rchopper56 : Miss Laura : 09/03/2019

Great flying plane. I would make the wing stronger than the plans show. My wing snapped when I pulling a few Gs. I love this plane.
jls : Bee-Tween : 08/03/2019

for Anon: remember CL models have one wing shorter than the other. So probably is represented only the longer one (as usual) and you've doubled the longer one obtaining a longer total wingspan.
Pit : Miss Laura : 08/03/2019

This plan is in French. Just before anyone starts wondering...
Fynnek : Empirix 1 and 2 : 07/03/2019

when printed its 52" wingspan as per the details, the original model was 56" span.
anon : Miss Laura : 07/03/2019

Thanks Tad, have amended this listing now.
SteveWMD : Storm Petrel : 07/03/2019

They got the name wrong - its Tad, not Ted...! I still have this little plane in its original condition, but it's much too valuable to fly now so is in well-earned retirement. Despite having designed and built scores of other planes both before the Storm Petrel and since, I've often thought about building another one and giving it a different colour scheme. It's a bit like owning a Morris Minor. Cars that follow are usually much faster and sophisticated, but there's something quaintly nostalgic about them and they're fun to have a go with.
Tad Davison : Storm Petrel : 07/03/2019

That is my Miss Martha in the main pic (white/green/blue trim). What an awesome plane! Will do 100mph tumbles or snaps yet land at a crawl with no bad habits whatsoever! She will also do the nicest flat spins-both upright and inverted. It's an easy build and one of my all time favorite planes. Give the Martha a chance - you won't be disappointed!
flygilmore : Miss Martha : 06/03/2019

Here's a few photos of the Yak 3 I built from plan OZ7765 [model photo & more pics 003, 004]. It's converted to electric power and flies amazingly well, fast and yet so docile when flown at scale speeds.
AdamEdwards : Yak-1 : 05/03/2019

More photos of what I've just finished: OZ10592 Pong, converted to electric [more pics 004, 005]. Thanks again for the website.
AdamEdwards : Pong : 05/03/2019

Here are photos of my Acro Sport, which started from the article in AAM which you have [more pics 007, 008]. I bought the magazine new and always wanted to build one. But it seemed a bit small at 44". I also have a copy of Jack Stafford's plan at 50", but the fuselage was not scale as it had been narrowed up, too much in my opinion. So I scaled up the magazine fuselage plan the old way, pencil and drafting tools, to match the Stafford wing. The result is a 50" version of the Acro Sport with scale lines. It is a great flyer, but once again, seems small by today's standards. Maybe a 1/4 scale is due?
MikeBelton : EAA Acro Sport : 05/03/2019

Here's a photo of Comet's 18" FW190, blown up to 24" [more pics 003, 004]. I got the plans from Outerzone and have downloaded several plans since then.
MaxBarfelz : Focke-Wulf FW-190 : 05/03/2019

Model photo & more pics 003 taken from small ad in Air Trails, October 1941.
Mary : Altimeter : 04/03/2019

My second passion after modelling is in photograpy. Not only in shooting but in restoring and repairing old cameras. My preferred cameras are the German Leica. From an old Italian advertisment of Italian, here's a picture with Leica IIIC and a Baby glider [more pics 002]. What a great couple!
Pit : Baby : 04/03/2019

This is a Jetco Hawk, your plan number oz4363 [model photo & more pics 003, 004]. When I was ten or eleven years old my grandmother bought this kit for me. For some reason, I never finished it. Because of your website I was able to download the plans and finally, fifty odd years later, build one. Thank you.
GregHarding : Hawk : 04/03/2019

Kitted by Best-By-Test company and designed by Ed Schlosser around 1940.
Pit : Altimeter : 04/03/2019

Just finished building this Zero from plan OZ7419 [model photo & more pics 003-004]. Converted to electric power and flies really smoothly. Will send more pictures soon as been on a building spree.
AdamEdwards : Mitsubishi A6M2 Zero : 04/03/2019

Added superb photos of this lovely completed model, thanks to Mauricio Bertello in Argentina [model photo & more pics 05-008]. You can also watch Mauricio's work in action at https://www.youtube.com/watch?v=VL6xt0r-aOQ and https://www.youtube.com/watch?v=GhB7dQ3XKGM&t=208s
Mary : Bi-Hawk : 04/03/2019

Hello - more model photos according to your plan, Mercurio 1:1 [more pics 003-009].
PetrFlidr : Mercurio : 04/03/2019

Hello,my first rc model aircraft was a deacon. 1976.was a wish come true,ever since I started building models age five (1965) all I ever wanted was a rc model plane. It was fitted with MacGregor single channel radio (second hand) and an Enya 09 engine - by the way why is the silencer on the opposite side to all of the other engines of that type? - anyway the day had come for its first flight, with out any sort of range test, the engine was started and the model was launched. After allowing it to climb fifty feet or so it was time to press the button! You guessed it nothing happened! With the fuel tank full it flew in a straight line never too be seen again. So after forty years that first rc flight it's still as clear as a bell. Have just bought a Enya 09 next job build a new Deacon. Second time lucky? Must say have built quite a few rc models since the first Deacon. Best regards Tony Wright
Pufango : Deacon : 02/03/2019

Excellent, have added a copy here as a supplement file, compressed it a bit. Many thanks.
SteveWMD : Electric Hots : 01/03/2019

For instruction manual see: https://www.rcgroups.com/forums/showpost.php?p=37851653&postcount=6
NX13688 : Electric Hots : 01/03/2019

Added some great images of Le Timide, thanks to Petr Flidr [more pics 003-009].
Mary : Le Timide : 28/02/2019

Hello. I'm sending more model photos according to your plan Civy Boy 24 [model photo & more pics 003-007]. 140g.
PetrFlidr : Civy Boy 24 : 28/02/2019

A couple of pictures of JB3 from oz10833 [model photo & more pics 003, 004]. This is a great model. I would recommend it to anyone. An easy build, easy to trim and will fly in a strong wind. Looks good too.
TrevorT : JB-3 : 28/02/2019

I had one of these, built about the same time as the magazine came out. I used a Babcock escapement and a Cox 020, with added up elevator from the Babcock. While it flew well, and even placed in a Class 2 contest, the only reason I placed was because I was number 3 of 3 entrants. It would be better as a tail dragger because it always hit the nose wheel first and bounced down the field. Now that I have the plans, an electric version may be in the works.
dougsmith : Lil Sep : 28/02/2019

Here's a pic of our "Clot", de tuned with an MP-Jet diesel [more pics 004, 005]. It's a real cutie and was a lot of fun to build. Thank you for Outerzone, you provide no end of pleasure for us !! Sent from my crystal radio.
Al_andGreyhounds : Clot : 28/02/2019

great plan, bad copy.
user : Airmaster : 28/02/2019

Dethermalizer fuse is still widely used in free flight today and is available commercially from Sig Manufacturing and other sources. Yes, it is an "old system" developed by Carl Goldberg around 1940. But it is light, reliable and inexpensive. All of my older models still use a fuse; I use clockwork Texas Timers on the newer ones.
Simon Blake : Automat : 27/02/2019

That's a VERY old d/t system. if you look at the two 'hooks' at the back, there's a short rubber band. Back then we used 'de-thermaliser fuse' (basically it was a wick from a paraffin lamp with graduated markings). That was inserted inside the 'hold down' rubber band and lit (normally with a cigarette). It smouldered at a steady rate and, when the glowing bit reached the retaining rubber, it melted it, the forward rubber then pulled the tailplane up almost verytically and the plane then descended.
Daithi : Automat : 27/02/2019

Yazdan, it was originally designed as a free flight but, like most free flight models, it can be adapted to radio control (which looks to be the case here). The builder has just set the elevator and rudder to be functional and added the necessary push rods from the servos.
Daithi : Cessna 180 : 27/02/2019

If you go by the separate control surfaces for all 3 axes, this one is flown R/C. Always remember nowadays we got those miniature R/C sets that can be built into small models that were constructed for free flight some decades ago.
Fynnek : Cessna 180 : 27/02/2019

Sorry but this model flies with control?
Yazdan : Cessna 180 : 26/02/2019

Very interesting dethermalizer timer. Wish the drawing was clearer for this mechanism!
rchopper56 : Automat : 26/02/2019

I had a wood set cut at Braincube aero models in 2017. Service quality and delivery excellent. Have built an electric version which is now in the final assembly stages. The build write up wasn't a great deal of help.
John : Westland Whirlwind : 25/02/2019

Found a couple of glitches in this plan. The slot of the stab is too short by 5/16", the formers T7 and T8 are both marked T1, The wing cutouts in F1 are too small for the ribs.
dan snow : Chieftain : 24/02/2019

Scratch built Mini Bee, built from downloaded plans from this site [model photo].
DGeese : Mini Bee : 24/02/2019

Another couple of photos of models from your plans built a while ago: Earl Stahl Skyfarer, OZ 6595, rubber scale [model photo & more pics 003]. Another good flyer and looks nice in the air. It looks a bit tatty because it is getting on a bit and has done a lot of flying. Even I looked better when it was built.
TrevorT : Skyfarer : 24/02/2019

Just taken a couple of photos of models from your plans built a while ago. This is the Skygipsy, by Ray Malmstrom, OZ 484 [more pics 005, 006]. Fondly remembered from way back and flies as well as it did then. DC Merlin powered.
TrevorT : Skygipsy : 24/02/2019

My Super Scorpion on approach [more pics 006, 007].
PeterCarter : Super Scorpion : 24/02/2019

A pair of my Yogis [model photo & more pics 005].
PeterCarter : Yogi : 24/02/2019

Hi Steve and Mary, Not really a comment or even a correction but a video of the original XV-1 on test flights https://digital.library.unt.edu/ark:/67531/metadc984561/m1/#track/1. The original btw is still in one piece (and is parked in the US Army museum at Fort Rucker).
Daithi : McDonnell 82 XV-1 : 24/02/2019

Thanks, have changed this listing now.
SteveWMD : Lincoln Beachey Monoplane : 24/02/2019

Looks like this is an R/C model rather than a rubber FF
dehaviland : Lincoln Beachey Monoplane : 24/02/2019

Doh, have uploaded the missing file now. Apologies. Thanks to Pat.
SteveWMD : Midget : 23/02/2019

Yes, the plan is full size at 83 inch wingspan. Of course the kit included ready-made foam wing panels, and also the ABS moulded parts that formed the fuselage pod. You'll have to fabricate these yourself from scratch. The manual is very detailed and will be helpful. Good luck with your build.
SteveWMD : Pipe Dream : 23/02/2019

I built one of these kits back in the late 80's. It was easy to build with the wings pre-glued and roughly sanded to shape. As far as flying, it was not a good plane for beginners. Take-offs were difficult with ground loops and landings were always exciting. The kit came with plastic cabanes. If you build one, strengthen the upper wing mounting with strong cabanes and possibly functional rigging. The plane would wiggle and fly erratic with upper wing flexing back and forth when pushed too fast. Although I built it per the kit, I had to use a OS Max 35 with a 10 prop to get it off the ground. Don't try a smaller engine, it has about 600 sq in of wing area.
Marko99 : Se5a : 23/02/2019

Hi Thanks for this wonderfull site. One question - this drawing are full size? I love this plane and I try to build one. Thanks again from Maracaibo Venezuela. Pablo
PAOF : Pipe Dream : 23/02/2019

Sorry email is james241x@gmail.com
James241 : Cirrus : 22/02/2019

Hi DavidRyan, just saw your comment - if you have an original Cirrus kit I would be very interested - built one 50 years ago - rgds James (james241x@gmail.com)
James241 : Cirrus : 22/02/2019

Thanks guys, have added the date now.
SteveWMD : Piper Cub : 22/02/2019

Piper Cub 26,5 inch ws, was introduced in the very first Keil Kraft catalog booklet of 1946.
Pit : Piper Cub : 22/02/2019

Hi, You don't need the printwood for this one - all the sheet balsa parts are drawn on the plan. It was the last of the larger KK rubber scale models to remain in production - I'd guess until about 1955. I had one as a Christmas present around 1951, still have the plan and down the years have built about half a dozen of them! Just can't resist that multi-spar wing! Sorry, can't help with the box, no recollection of colour etc but I think it had a photo like one of those on the plan.
Ken Jones : Piper Cub : 22/02/2019

This is nice. Can anyone put a date to this one? Also a pic of the box art - or indeed a scan of the printwood? Thanks
SteveWMD : Piper Cub : 22/02/2019

Hello. I'm building models from the Outerzone. I'm sending a photo for publication. Here is Mini Hogan 45 [model photo & more pics 003-006].
PetrFlidr : Mini Hogan 45 : 21/02/2019

Please find attached my Boynton 41 plus 3/4 version, OZ 565 [more pics 003-005].
PeterCarter : Boynton 41 : 21/02/2019

A couple of photos of the just built Tan Giro from oz 9704 [more pics 006-008]. Not too sure about this one, so windows and other details will be added after it has flown (or not). I have modified the rotor hubs and blade attachments after reading about the hub failure suffered by a previous builder.
TrevorT : Tan-Giro : 21/02/2019

I remember the PT-40 being a good trainer for its time. Had at least one student who used it.
lincoln : PT-40 MkII : 20/02/2019

Looks like the fuselage formers and wing ribs really are missing. Should not be too difficult to reconstruct, though.
Fynnek : Spitfire : 20/02/2019

The wing shape has been considerably altered, probably in the interest of adding area. Check against documentation; I would call this semi scale at best.
David D : Texan II : 19/02/2019

Hallo, very professional. And the colors beautiful and the combination. He flies very well. Felicitations for a great modelist. Greetings
Erotav : Sirocco : 19/02/2019

Here is the structure of my Sirocco [more pics 004]. A nice rubber band model. I use a small electric motor with 2 small servos and 12 A esc, 2 cells 450 mA lipo.
JulienVermeire : Sirocco : 18/02/2019

Hi friends, I'm sending you a picture of Grumman Bearcat plan ID oz4959 [more pics 005].
CarlosABGonzalez : Grumman F8F Bearcat : 17/02/2019

Hi Friends, I'm sending you pictures of my last project, the Polikarpov Po-2 plan, ID oz10255, with some modifications in wings and fuselage. Add some more ribs and add ailerons for more scale appearance. Greetings from Bogota Colombia.
CarlosABGonzalez : Polikarpov Po-2 : 17/02/2019

Hello, many thanks for finding the Wasp plan I requested on the wanted list. Best regards
TonyWright : Wasp : 17/02/2019

Hello. Does anyone have the 1/3 plane scanned with the parts pieces?
Fran : Pitts S-2A 60 : 16/02/2019

Please find attached a few photos of my Gipsy, built from the Keil Kraft kit recently relaunched by RIPMAX [more pics 015-019]. It is a very nice kit, the wood choice in mine being quite good and the laser cutting helping building no end. I converted it to electric power and radio control, as I wanted a park-flyer without the 'downwind chase' hassle and did not fancy piling-up turns on a rubber motor. The model was covered in Solarfilm's Litespan for its strength and puncture resistance. It flies great on a 'bell-type' outrunner motor that, with a GWS 8"X4.3" propeller cut down to 7" diameter draws 5.3A from a 2S 500mAh battery. The review was published in the RCM&E Feb 2019 issue should any of the 'Outerzone' fans wish to know more details about the conversion.
ArnaldoCorreia : Gypsy : 16/02/2019

Miss Grandin photos [more pics 004-012]. This model, it's a lot of work (more than 300 hrs: aircraft and jig) but this is my passion. I added a special leading gear with my own design. Thanks again for all of your help!
LucDaigneault : Miss Grandin : 16/02/2019

That's a lovely story, Bob ♥ Say hi to Miss/ Mrs Martha from me!
Mary : Miss Martha : 16/02/2019

Hi, Looks wonderful! I remember when they came out in the late 70's ...a dream airplane. Well done. I want to do an electric conversion as well. Next winter!
gapagod : Windfreak : 16/02/2019

This glider was not designed as the Caprice by W Kuhlman in 1990 but was designed as the Gull by the legendary Paul Del Gatto and published in the August 1957 issue of Flying Models magazine.
mgray93 : Caprice : 15/02/2019

Thanks. Got it now. Updating this listing.
SteveWMD : F-51H Mustang : 15/02/2019

This model has a 66" wingspan. Also, the kit was sold by Sterling. Both of those details would help when searching for it. Thanks for posting this plan!
DB : F-51H Mustang : 15/02/2019

Considering the large and lifting tail I suggest not less than CG position at 60% of wing cord - also, check the Double Jabberwock (oz8000), which has CG position indicated on the plan.
Pit : Jabberwock : 13/02/2019

Not sure if Wally Simmers ever showed on his rubber powered designs the Center of Gravity location. My interpretation is that you need to test for the location by simple hand tossing (gliding), adjusting to nose weight until you achieve a smooth glide. Usually somewhere between 1/3 to 1/2 the wing chord for rubber powered models.
rchopper56 : Jabberwock : 13/02/2019

Please can you tell me the position of the center of gravity. Best regards
Richard : Jabberwock : 12/02/2019

Doh. Have added missing article file now.
SteveWMD : Dewoitine D-33 : 12/02/2019

The wing centre-section is flat. The bend is at rib W2. The part B1 is a 1/8 plywood brace that forms the correct dihedral angle, when it is fitted against the main spar, between ribs W1 and W3. Does that help?
SteveWMD : Spitfire F22/F24 : 12/02/2019

I need help. I'm building the plane in 230 cm and I do not understand the dihedral.
Michel : Spitfire F22/F24 : 12/02/2019

You can view Allan's build log for the Cub at https://www.rcgroups.com/forums/showthread.php?2681621-50-Piper-Cub-1940-plan
Mary : Piper Cub J3 : 11/02/2019

Please add this photo: my 88" Powerhouse, restored from a basket-case, powered by a ASP52FS, covered in Solartex [more pics 010].
SybrandStrachan : Powerhouse : 11/02/2019

Kindly post this photo on your site: it is my 84" Quaker powered by an old OS40FS and covered in Solartex [model photo].
SybrandStrachan : Quaker Too : 11/02/2019

Here are a couple more photos of another model, this time the Bristol M1D by Bill Dennis from Aeromodeller, oz number oz2991 [more pics 005-008]. A bit of a change here, I built this model as the WW I Fighter that it was to start with, not as the later racing version, mainly to try out some coloured tissue I had recently bought that I thought may look the part. It turned out to be one of the nicest models to build, cover and fly. Eventually of course, the tissue started to deteriorate so I sold the model along with the proviso that they re-covered it!
John&Kath_French : Bristol M1D : 11/02/2019

Attached pictures of our Leprechauns in their maiden flight in Zarautz (Spain) [more pics 006, 007].
Ignacio_Martinez : Leprechaun : 11/02/2019

Doh. Have added the missing sheets 2 and 3 showing printwood parts to this planfile, now.
SteveWMD : Ryan PT-20 : 10/02/2019

I noticed that the aspect ratio is inaccurate on this plan. The root rib is longer in the wing rib view than in the wing top view. When the plan is scaled to 99% horizontal and 100% vertical, everything is perfect. Thanks,
Rob : Omega : 09/02/2019

Thanks Joe, a secure starting CG for the initial trimming flights indeed.
EJK : Gee Bee Zeta : 08/02/2019

Looks just fine to me, Fred. This is of course a 16-1/2 inch wingspan rubber free-flight model. As such, I'd say this here is just exactly as scale as it needs to be.
SteveWMD : Gee Bee D : 07/02/2019

Thanks, Steve. And if anyone is wondering where the name came from, I named it after my then girlfriend. She was a little miffed when I was spending so much time working on the design, so I painted her name on the side of the prototype and started flying in fun-fly contests. I had not intended to call it the Miss Martha, but the name stuck. She must have thought it was cool to have a plane named after her. She married me in '83 and we have been together ever since.
Bob Richards : Miss Martha : 07/02/2019

Looks good in the pix... but it's not a very scale plan.
fred : Gee Bee D : 07/02/2019

Couple of photos of Victoria Parker, OZ 2528 [more pics 003-005]. Your plan and a Belair parts set. Simple to build, easy to trim, good looking and a great little flyer. Thank you.
TrevorT : Victoria Parker : 06/02/2019

Here are a few pics of a scaled down variation of Leon Shulman's Sky Rocket B [model photo & more pics 006-008]. Wingspan 18", overall length 14", weight (without 1S battery) 71g (2.5ozs). RC is via an ares mini gamma brick (rudder elevator brushed esc. & 3 axis gyro.) The motor is a geared unit from the same plane with a 5" (by 3 pitch. My guess.) There is plenty of room up front for a choice of 1s batteries so I will be trying both the 150 and 300mah units since I seem to be able to get both to balance ok. My only slight concern is the wing profile where I might have misjudged the position of the wingtip trailing edges. Will give it a try before going back to the building board. Thanks for the amazing resource.
AnthonyRoberts : Sky Rocket B : 06/02/2019

Hi Folks, I was just looking at this plan with the thought of building a bigger one to go with my 1/2A Texaco version scaled to 44 inches span. This little one is a fine flying little model that is very competitive in its class. It has been a real little winner here in both 1/2A Texaco and 1/2A Scale Texaco. Best of all it looks great in flight. I can definitely recommend it although keep control throws small and move CG forward to about 28% of root cord. Anyway... I realised I hadn't sent you photos of mine for your plan page [model photo & more pics 004-009].
AllanKnox : Piper Cub J3 : 06/02/2019

I'm just building the Prarie Canary and I found that the covering sags dramatically between the ribs. The spacing of the ribs is just to large. If you build this, double the number of ribs, this is what I did now.
flo : Prairie Canary : 05/02/2019

Added some really nice pics of this model, thanks to Luc Daigneault [more pics 003-005].
Mary : Sophisticated Lady : 05/02/2019

Added two super photos of the finished model, thanks to Luc Daigneault [more pics 008, 009].
Mary : Contender : 05/02/2019

My Starjet, ~1972, OS35RC (plain bearing), home made prop, ~8"or 9" dia, 8"pitch, ~30-80mph, very good aircraft, 3-line system, as shown [more pics 004]. I flew it for ages, at Three Kings Club, Mitcham, mainly control-line, at Croydon Airport site - we had a large plywood aircraft carrier! This is the other aircraft I refer to in the Brewster Buffalo, oz1707 plan page.
VinceDay_Singapore : Starjet : 05/02/2019

Added Ambroid cartoon [more pics 004], thanks to dfritzke.
Mary : Charger : 04/02/2019

Ambroid cartoon [more pics 005], thanks to dfritzke.
Mary : Jetstream : 04/02/2019

Ambroid had a little 'toon for many of their models [more pics 004; see also Jetstream oz7937 & Charger oz2903]. Scanned from a full page magazine ad that showed many of them. You can see these graphics are on the plans.
dfritzke : Whipsaw : 04/02/2019

I'm sending a picture of my larger electric-powered Opel-Rak 1 [more pics 003-005]. It is built in threefold size.
BernhardDittmann : Opel Rak 1 : 04/02/2019

This is a photo of my Raiden [model photo]. I increased the plan to 80" wing span.
Al_Alcorn : Mitsubishi J2M3 Raiden : 04/02/2019

I built the original Javelin and found it a really rewarding plane albeit a little twitchy. The winter recess has been a great opportunity to revisit, and aside from a new colour scheme I have reworked the tailplane and stabiliser to give more predictable results [more pics 008, 009]. I have also switched motors for a better JP enerG (c28-08) unit.
AnthonyRoberts : Jersey Javelin : 04/02/2019

[See Wedgy oz2007 for the start of this model/ story.] My wingspan is 23.5" with a slightly deeper wing of 4". Overall length is 16.5". Power is a Turnigy 2205A 1350kv motor (100watts). That's paired to a 12A esc. & a 2s 500mah lipo. Similar to the originals I am going with a EP 7 by 3.5 prop. [more pics 007, 008]
AnthonyRoberts : Flying Midget : 04/02/2019

Here's a collection of photos that chronicles my attempts at an RC Wedgy that had mixed results and ended up as a donor for another creation [more pics 004, 005, also Flying Midget oz6140. The first Wedgy flew okay but was not very robust so I rebuilt it a bit sturdier. That version was less successful but rather than scrap it I searched your site for a plan with a similar wing. I came across the Flying Midget (oz6140) [where the story continues ...]
AnthonyRoberts : Wedgy : 04/02/2019

Greetings. Once again, I was perusing the plan inventory, and saw the Sportbipe #10496. At first glance, I did not see any reference to its designer - Jack Headley. Upon further inspection, it was clear. I first saw the R/C SPORTBIPE in a January 1978 issue of R/C Sportsman magazine. I kept that issue handy for nearly 40 years, until I built the model a year or so ago. My model incorporates ailerons, rather than a rudder, and the top wing is removable. Attached are pictures of my efforts [model photo & more pics 003-005]. Thank you for such a great site!
DougBurright : Sport Bipe : 04/02/2019

Here is another of my recent models, once again built from one of your collection of plans. This Super Skyrocket is for a Telco Co2 motor [model photo & more pics 006]. This model is covered with Blue and Black Airspan using SIG Stixit which I have found is the best adhesive for Airspan, lightly doped; the white pin-striping is a 1 MM strip cut from Solarfilm. Tricky to iron it down without distortion, needs full concentration and no hurrying allowed; after all, a hobby is for spending time, not saving it! (An old Bristolian saying!) The propeller I laminated from 1 MM veneers of contrasting colours, using white PVA glue from Queensland called AV-101, used to glue up real wooden aeroplanes, so it's great for balsa and can be sanded.
John&Kath_French : Super Skyrocket B : 04/02/2019

Special thanks to George Albo and, by extension, Pat Johnston for posting complete plans for the Ringmaster Imperial, a model I've been wanting to build for decades. Kudos to Outerzone as well for bringing it to us.
anon : Ringmaster Imperial : 03/02/2019

This is just fantastic. An elusive and Regal Stunter of the the days of yore. Thanks you so much. I have wanted this plan since I first saw the Imperial.
ModelBuilder : Ringmaster Imperial : 03/02/2019

Just built from this plan, The drawing is NOT symmetrical about the center-line and I ended up making my own wingtips. I recommend 1/32" sheeting on the nose, and adding -2 degrees decalage to the rear wing. So far test glides with that and the CG 1.62" back from front wing leading edge look promising.
dan snow : Mauboussin Hemiptere Type 40 : 03/02/2019

Hi guys can I transform this into a 4 chanel RC??
AeroVic : Jupiter : 03/02/2019

The material list says that the longerons are from 3mm x 5mm pine.
ChrisPinn : DG-67 : 01/02/2019

Eamonn, Since the Gee Bee Zata has straight leading and trailing edges, and no taper or wing sweep, a CG location of 25% of the chord line will be a safe place to start. Regards,
Joe A : Gee Bee Zeta : 01/02/2019

Very nice looking glider with a large rudder and a flying stabilizer. A lot of plywood is used, wonder if the longerons are something other than balsa.
rchopper56 : DG-67 : 01/02/2019

Steve, I don't have the plan but your site has enough info to approximate the stab dimensions. Zaic's plan for the Miss America (oz5645) looks like a scaled up Cabin with only a few cosmetic changes. Using that plan and roughly calculating, the stab has 25% of the wing area, 50% of the wing's aspect ratio, and is located at twice the wing chord from the wing trailing edge. The Cabin top view and the sketch in the center left at the bottom show the stab with a straight trailing edge, a tapered leading edge, and a squared off tip. Drawing that out the center chord is 3" (per plan), the tip is 1.875", and the length is 8". (76 x 48 x 203 mm). This gives close to 25% area and 50% A/R. Enlarging slightly might be a good idea, perhaps the tip to 2" and/or a bit longer than 8" Easier to trim the excess than to add on after test flying. The stab must have come pre-cut out of 1/32" stock with the kit. With no assembly there was no need to print it out. Personal opinion - the Miss America stab is more attractive and would be in keeping with Zaic's designs. Scale it down and cut it out of 1/32" sheet.
Bill H : Zaic Cabin : 01/02/2019

Hi, l bought the plan back in the 1980s and put it aside until now! I have started to build and the C of G location is not shown on the plan nor mentioned in the building notes. If subsequently it has been shown I'd appreciate a reply.
EamonnJKeenan : Gee Bee Zeta : 31/01/2019

Added super photo of Mike Mulholland's lovely build [more pics 012]. Note the hand-carved wooden prop :)
Mary : Jupiter : 30/01/2019

Here is a photo of the Italian Glider l'Ala (Meise oz10824) [more pics 003]. It shows the lovely shape of this model. I found it under: https://www.rcgroups.com/forums/showthread.php?3208469-CAP-2019-The-Meise-Italian-OT-glider
Uwe : Meise : 30/01/2019

Please, add these photos to this model: QAC Quickie - by Ray Jennings from RCMplans - 1982 - 55in span - Scale IC R/C Civil [more pics 005-008]. It's my crazy model - "WOW"!
LucD : QAC Quickie : 30/01/2019

Please, add these photos to this model: Aeromaster Too - by Lou Andrews from AAmco - 1968 - 53in span - IC R/C Biplane [more pics 004, 005].
LucD : Aeromaster Too : 30/01/2019

Re: KK Ajax 1368 printwood [suppl. file]. Hope they will help builders of this old classic. The wing ribs are 'die cut' so not very clear.
NicholasTucker : Ajax : 30/01/2019

Built one of these from the original plans back in the early 80's. Powered with a CO2 motor, it flew so well, I scaled it up 2x and put a cox 049 on the front. Best free flight model I ever had!
B Thompson : Der Adler : 30/01/2019

Attached are some photos of my Dave Robelen Pronto, oz1740 [more pics 006-010]. It has been a regular flyer since 2014. I built it as a 3 channel aircraft per the plans and I built an additional wing with ailerons. It flies well either way but I think it is a bit more fun to fly on three channels than it it is to fly on four. It has flown with an Enya .19 TV (the very same engine I had in a Pronto in 1984), a McCoy .19, a Fuji .19 and, its current power plant, a Veco .19. The fuselage and empennage are covered with silkspan and finished with butyrate dope. The aileron-less wing is covered with cub yellow solartex while the wing with ailerons is covered with Silron and finished with butyrate dope. All photos taken by Dan Clune.
DougWeaver_Buffalo_NY : Pronto : 29/01/2019

I have flown it once so far and I am learning how to trim peanut size models on a harsh gym floor. But it did survive and and need to do work on the CG and power delivery. Every day is a school day!
AMaxfield : Tiger Moth : 29/01/2019

My name is Carlo Santangelo and I am a "vintage" modeller. Greetings from Italy and congratulations for the wonderful site. I send some photos of my last fatigue, the Cessna 180 with electric motor [more pics 003-007].
Carlo_Santangelo : Cessna 180 : 29/01/2019

Wayfarer Photos [more pics 005-012]. This plane was constructed per the RCM plans with the exception of adding electric propulsion and a nose similar to the Acro-Star (oz6256). I installed a NTM 4248-650KV motor, 60AMP ESC, 4-cell LIPO (3300mah), and a 14x7APC prop. Flies great with this setup. In order to allow the greatest amount of battery movement to balance the plane, I moved the elevator and rudder servos to the rear. This worked out fine. Thank you for hosting this wonderful site.
RonaldSwenson : Wayfarer : 29/01/2019

Please, add to this model: Sun Ray - by Jack Scarbrough from RCMplans - 1975 - 51in span - IC R/C Biplane. My model is a 112% scale from the original (wing span: 57 in, engine: OS AX65) [model photo & more pics 007]. Thank you!
LucD : Sun Ray : 29/01/2019

Hello Mary and Steve, I'm a big fan of the genius of Walt Mooney, and decided to purchase the 1967 Model Airplane News magazine on ebay and send you the scan of the article [suppl. file]. Nice to be a part of Outerzone. Your website has introduced me to some amazing artists of the model airplane hobby who took their turn decades ago, and I thank you for that. Very sad that younger people today don't have the interest in the magic of building and flying balsa and tissue aircraft.
Rob : Gee Bee Model D Sportster : 29/01/2019

Added now, see supplement file (thanks to Pit).
SteveWMD : Whipsaw : 29/01/2019

Yep. Sorted now.
SteveWMD : Stinson Reliant : 28/01/2019

Hi, I have an old photo that could be used with the Hal deBolt Midget Mustang, reference OZ10819 [model photo & more pics 003]. My dad, Hale Wallace, built and raced one of the prototypes along with Hal deBolt in the '70s.
ScottWallace : Midget Mustang : 28/01/2019

Makes an excellent still air park flyer scaled up 120% [more pics 006-009].
CatBob : Senator : 28/01/2019

Hi, I found a picture of Viki, oz10831 [model photo & more pics 003]. Cheerio.
Uwe : Viki : 28/01/2019

Hi John - I got one in the late '60s, had to work for it in my holidays. It flew very well but I crashed it being my first plane ever. I rebuilt it but it to took me a long time to figure out that it needed a lot of down thrust. It never flew again. I think it is the most authentic, beautiful plane Cox built. The Cox engine was later modified with a tank and used in a lot of other balsa planes and RC gliders (Dandy from Graupner oz4538). Nice picture.
Ed : Viewpoint 20 : 28/01/2019

Just a couple of photos of the Mercury Viper I have recently built for a donated 40 year old PAW 1.49 [more pics 007, 008]. Hopefully will be my first successful foray into C/L after my previous abortive attempts from 45 years ago!!!!
ColinBaxter : Viper : 28/01/2019

The Big Bird was constructed with a bigger engine, and the self-made landing gear (strut) was not good in function; I changed it to a carbon strut. It has separatable wings, and stearable tail wheel [model photo & more pics 003-007].
Krisztian_Halmai : RCM Big Bird : 28/01/2019

The Wind Puff was converted into an electric pusher [more pics 007-011]. I made a wider fuselage for the battery. The landing gear struts were made of bent spring steel. Sadly after only 2(!) take-offs it has turned out that the whole construction is heavier, and it won't fly well if I decide to change some parts. The fuselage was thrown away, the wing is now a decoration in my workshop.
Krisztian_Halmai : Wind Puff : 28/01/2019

Does anyone have an actual copy of this plan without the annoying text? Thanks!
m1fan : Stinson Reliant : 27/01/2019

How can I get the elevator and stabilizer? Thanks,
anon : Whipsaw : 27/01/2019

I'd suggest you stop building immediately, and instead start on re-drawing the plans. These plans need work. They are not aligned. Hence my previous posted warning of: "Note this is a 2 colour 400 dpi scan that is in need of a good cleanup, and some very careful straightening out."
SteveWMD : Gazariator : 25/01/2019

Trailling edge of tailplane is meant to be straight, but is not on this plan due to misalignment of reverse printed half. I am just starting to build this.
anon : Gazariator : 25/01/2019

Aha. Got it, thanks Pit. Ok, have changed this listing now.
SteveWMD : JB-3 : 25/01/2019

Duration cabin model published in Model Aero Constructor 06-1938. Aeromodeller incorporated this rival magazine, as they did Model Aircraft. So this plan was advertised in Aeromodellers plans service.
Pit : JB-3 : 25/01/2019

You did nothing wrong! The structural design is poor, slimming down as it does to a very thin section that has a very low moment of resistance. As long as the model lands in a straight line it will be OK. However if the wing catches on something and slews the model around, the radial acceleration will snap the tail off.
Denis : Leprechaun : 24/01/2019

Just a note. The Seamaster 120 (ID 10817) presented here is a enlarged version of the Seamaster 2 (ID 5899) published in the May, 1984 issue of RCM. As the plan details are similar, the article and building instructions for the smaller (48-inch) Seamaster 2 may be useful to anyone building this larger version. Best complements,
davidterrell80 : Seamaster 120 : 23/01/2019

I built a model of the Leprechaun from APS plan about 1990. The problem I had was that every time she landed the rear end of the fuselage broke off, immediately in front of the tailplane assembly. As many models of the Leprechaun fly successfully, can anyone tell me what I did wrong? Wouldn't mind building another Leprechaun using Depron and an electric power pod.
Malcolm Jackson : Leprechaun : 22/01/2019

Many thanks for publishing the Soloist plan. I built the Soloist about 1989, and learned to fly RC, without any problems, using the model. This was after about 3 attempts on other models I had built. I have now used Posterazer to print the plan out on A4 sheets. I have done the wings and fuselage separately using landscape mode. Saves paper and does not cause distortion problems trying to make one full size plan. If anyone wants copies of the Posterazor sheets just email me on malcolm.jackson.ntlworld@gmail.com
Malcolm Jackson : Soloist : 22/01/2019

We too were very much addicted to this design. Some of friends learned flying with this Junior 60. I build this from scratch using locally available wood. No balsa.
Dr Subhash Mashal : Junior 60 : 22/01/2019

Added nice pic of the completed model, thanks to LucD [more pics 003].
Mary : Seamaster 40 : 21/01/2019

This is more a comment than a correction on the Seamaster 120. However, if heeded, will lead to several corrections. When this plane first came on the market, I was an ACE dealer and like another dealer, in the USA, we could not wait to test it. So we each built one, being the first two on the water. Could have been much improved prior to release. Too much plywood - almost every part - meant an extremely heavy plane. My recommendation is to eliminate it in most places, including the wing ribs, minor bulkheads and especially the tail. It makes the tail end too heavy and very weak by placing the heavy horizontal stab on top of the flimsy, heavy vertical fin. Those heavy, poorly fitting brace wires don't help much. In fact, they shake and rattle so much when the engine is running that you may even generate RF interference due to the metal to metal contact. The clevises do not fit their straps properly. And the vertical fin must be strengthened to hold the stab without shaking. Also, the choice of wood for the engine pylon was weak and flexible. My first engine was a Super Tigre 2500 which proved totally inadequate for power. It was replaced by a Quadra 42. Both the other builder and myself then experienced extreme problems with flying, especially in turns. The plane would not fly properly no matter what we did. And for me, that was the case with both the Super Tigre and Quadra engines. There were continuous calls to ACE and between us to sort it out. Ultimately, the only solution to get a somewhat proper flight was to add a large dorsal fin, from about half way up the existing vertical fin to almost the trailing edge of the wing. The big issues were overall weight and improper attitude in and flight in turns. I also believe that the claim of flying this plane, as designed, on a 1.08 2 stroke or 1.20 four stroke engine is quite a stretch. It needs more power and thrust, as provided by the larger displacement and prop of the Quadra. There is no substitute for cubes.
MatthewStikeman : Seamaster 120 : 21/01/2019

Aha, got it, thanks. The "B Ashby" must refer to the draughtsman rather than the designer.
SteveWMD : Sunnanvind : 21/01/2019

Sunnanvind was designed by Sigurd Isacson from Sweden and the model was revolutionary for its time and set a new standard for singing speed and wing profiles.
anon : Sunnanvind : 21/01/2019

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