Dornier Do 23 (oz13820)


Dornier Do 23 (oz13820) by Don Srull 1978 - plan thumbnail

About this Plan

Dornier Do 23. Radio control scale model 1930s German twin bomber. Wingspan 84 in, wing area 1152 sq in. For 2 x OS .30 engines. Scale is 1/12.

Direct submission to Outerzone.

Quote: "Hello Steve and Mary, Here is a 84 inch Dornier Do23G. Designer Don Srull. From Uncle Willies. Best regards, Patrick"

Note see RCGroups thread from 2007 at: for some great photos (sampled here on this page) taken by Pat Daily of the original model prototype, still being flown by Don Srull himself 30 years later, in 2007. The model had by then been converted to electric.

Update 12/5/2022: Added article, thanks to RFJ.

Quote: "Exciting Sport Scale version of vintage WW II German twin-engine bomber-to-be, which was entered at 77 Nats for first competitive effort ever and placed third overall, tops in static. Dornier Do 23G, By Donald W Srull.

Some of the most interesting and unique vintage aircraft designs are to be found in the group of between-the-wars, long-range bomber aircraft. German, British, French and American designers of the 1920's and 1930's were struggling to escape the severe limitations of the wood, wire and fabric bombers of World War I.

Metal structures, higher powered engines, better streamlining, including first attempts at retractable landing gears and internal bomb storage, began to show up in these new and innovative, if somewhat awkward, giants. Several of the French aircraft of the period have always appealed to me, especially the Amiot 143, the Block 200 and the Potez 540. However, in selecting the subject for my first twin engine Sport Scale R/C model, I was attracted to a relatively obscure German bomber from the Dornier works because it seemed to lend itself so well to modeling.

As I gathered more information on the Dornier 23G, I began to appreciate just how good a subject it was. I must admit that I was rather surprised (and a little pleased) to discover that the DO 23G had apparently never before been modeled, even in plastic. Its twin-engine nacelles allow easy upright mounting of model engines, and they provide adequate airflow for cooling. The wide-track landing gear can be simply built and mounted, using standard modeling techniques. Finally, the moments and tail surface areas are about as good as any sport R/C design you can imagine - in fact, not unlike a Falcon 56. The thick-airfoiled, graceful wing and its typical Dornier fin/rudder shape give the 23G a distinctive and classic look.

The scale structural materials can be easily simulated in the model: a simple balsa box represents the aluminum-covered fuselage of the real DO 23G, and the silk-covered wing and tail surfaces likewise match the fabric-covered surfaces of the original.

Last, but not least, from a Sport Scale competition standpoint, the aircraft has a large number of interesting and simple-to-duplicate surface details that add so much to a model's scale appearance: three open cockpits, hand rails, three machine guns, six antennas, and a pair of enormous wheel spats, to name a few. The only design features I was somewhat concerned about were the thick (20 percent) airfoil and the Junkers-type, so-called 'double wing' off-set flaps and ailerons. As it turned out, these concerns were unfounded since the model is extremely stable and well-behaved, with no bad characteristics whatsoever.

I selected a scale of 1 in = 1 ft, which gives the model a span of 7 ft and a wing area of 8 sq ft. The prototype model weighed in at about 10 lbs ready to fly. Two OS Max .30 engines were used, which give more than adequate power. Anything over that size would be wasted weight and volume - in fact, a pair of .25's would do the trick nicely.

The model was completed in less than six months time, from design to first test flights, and a couple of months before the 1977 Nationals. As a result, the Nats was the first competitive event entered; certainly not a recommended procedure! The Dornier 23G, however, received the highest static score in the midst of some stiff competition. My lack of flying experience with the model (and general lack of flying skill) and an erratic elevator servo put us in third place overall.

And it was very close at that: only 3 points separated first, second and third places! A little more flying practice helped win three first places in the three subsequent sport scale events entered. With my kind of flying, this proves how competitive the Dornier 23G can be! It's also an enjoyable, easy flying model..."

Supplementary file notes



Did we get something wrong with these details about this plan (especially the datafile)? That happens sometimes. You can help us fix it.
Add a correction

Dornier Do 23 (oz13820) by Don Srull 1978 - model pic

  • (oz13820)
    Dornier Do 23
    by Don Srull
    from Model Airplane News
    August 1978 
    84in span
    Scale IC R/C Multi Military Fighter
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 05/05/2022
    Filesize: 893KB
    Format: • PDFbitmap
    Credit*: PatrickUrbain
    Downloads: 987

  • Dornier_Do_23 | help
    see Wikipedia | search Outerzone
    Test link:
    search RCLibrary 3views (opens in new window)

    ScaleType: This (oz13820) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.

    If we got this right, you now have a couple of direct links (above) to 1. see the Wikipedia page, and 2. search Oz for more plans of this type. If we didn't, then see below.

    ScaleType is formed from the last part of the Wikipedia page address, which here is
    Wikipedia page addresses may well change over time.
    For more obscure types, there currently will be no Wiki page found. We tag these cases as ScaleType = NotFound. These will change over time.
    Corrections? Use the correction form to tell us the new/better ScaleType link we should be using. Thanks.

Dornier Do 23 (oz13820) by Don Srull 1978 - pic 003.jpg
Dornier Do 23 (oz13820) by Don Srull 1978 - pic 004.jpg
Dornier Do 23 (oz13820) by Don Srull 1978 - pic 005.jpg

Do you have a photo you'd like to submit for this page? Then email

User comments

Srull Don? Must be a new guy.
Let’s be careful out there.
James Hickman - 12/05/2022
Doh. My mistake, fixed now, Don Srull - sounds much better that way around. Many thanks.
SteveWMD - 12/05/2022
Dear friend, Your plan dornier do 23 is excellent,the only problem was that there was not any C.G. I constructed this with 3meters(118 in) wingspan and flown with 2 Super Custom 91. Weight 12 kilos. You can see the maiden flight in my youtube channel: xenias1000, see: Thank you very much, Xenias Athanasopoulos, Greece
Xenias Athanasopoulos - 25/03/2023
Holy cow, Xenias, that is magnificent!!! I say, was that a priest in the cheer line? I understand one must plan for the worse but bringing a priest for the first flight seems overly pessimistic :) But yes, the footage is spectacular and that first was a beauty. Congratulations!
Miguel - 25/03/2023
Add a comment



Download File(s):


* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.


This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.


Terms of Use

© Outerzone, 2011-2024.

All content is free to download for personal use.

For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.

Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.