Astro Hog (oz969)


Astro Hog (oz969) by Fred Dunn 1958 - plan thumbnail

About this Plan

Astro Hog. Classic RC stunt model. This is the legendary model that got RC aerobatics off the ground in the late 1950s. The first successful low-wing RC model, it took top 4 places at the 58 Nationals.

The classic Astro Hog (oz4756) design first appeared in MAN April 1958. This here is the Astro Hog as it was kitted by Berkeley.

Update 24/04/2013: Have split this plan into 2 sheets to make printing it out a bit more practical. Thanks to ColinSharpe for pointing this one out.

Update 25/02/2020: Added decals file, thanks to Rich.

Quote: "Good morning Steve and Mary, Please see attached file for your website if you find it acceptable. The decal scan came out of an older Sig kit and maybe other modelers would find it useful on the Berkeley version of this kit. Thanks for your time and effort, your website is a goldmine! Regards,"

Update 15/4/2022: Added kit instructions (actually from the later SIG kit), thanks to Pit.

Update 5/10/2023: Added full page Berkeley ad (supplement PDF), thanks to Pit.

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

Astro Hog (oz969) by Fred Dunn 1958 - model pic


Astro Hog (oz969) by Fred Dunn 1958 - pic 003.jpg
Astro Hog (oz969) by Fred Dunn 1958 - pic 004.jpg
Astro Hog (oz969) by Fred Dunn 1958 - pic 005.jpg
Astro Hog (oz969) by Fred Dunn 1958 - pic 006.jpg
Astro Hog (oz969) by Fred Dunn 1958 - pic 007.jpg

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

User comments

Hi Steve, I just test flew my Astro Hog, electric powered. Here's a picture for the gallery [more pics 004].
Paul - 06/09/2013
Your plans illustrate the balancing location for "control line" flying, no dimensions are shown for radio controlled flying. Can't find those balancing dimensions anywhere, even on other web sites.
anon - 20/04/2015
Hello. My name is Kathleen Dunn, wife of the late Fred Dunn. It warms my heart to still see posts about Fred. I still have Fred’s “original” Astro-Hog plans, and, the original plane. Fred was a wonderful husband and was a truly kind person to the core. He is greatly missed. R.I.P. Fred.
Kathleen Dunn - 25/01/2021
Dear Ma'am, your husband's model was an inspiration for a lot of modellers and designers. My first low wing model was certainly based on your husband's one, although smaller, which was a blessing for us Europeans! :-)). It is also wonderful to know his memory is still cherished by his loving family. My best wishes for you and your family, and my thanks for the joy my 'mini Astro Hog' gave me many years ago. AC
Arn Correia - 27/01/2021
I am sincerely glad to see this hobby of ours bring some pleasant feeling to the wife of one of our Pathfinders. I hope we'll meet that multitude who took and will take the Last Thermal to that large cumulus up there.
And if the cloud feels too crowded it's no worry, in my Father's house are many mansions. One for FF, one for RC, one for CL, one for... ;-)
Miguel - 28/01/2021
This message is for Kathleen Dunn asking if she would post pictures of Fred's Astro Hog on the Vintage Radio Control Society RC Groups thread at We would love to see it.
Mike Denest - 31/01/2021
I have converted Astro_Hog_oz969_decals picture to SVG file, so you can cut or engrave. BTW, how to upload a file here?
Jay - 13/04/2022
Hi Jay. See FAQ. In short, email.
SteveWMD - 13/04/2022
Astro Hog CG: Berkeley, in its marketing wisdom, tried to sell most of their models as suited for free flight, control line or RC. Nobody ever built one of these for control line. I would balance the Hog about on the main spar, you'll be close enough. I've flown one of the SIG versions of the Hog, flew fine but had a tendency to give down elevator effect when using rudder. Sig moved the stab location to top of the fuselage, but the bottom position is better, as shown. Plan shows WAAAAAAY too much elevator movement, probably for control line use. You will need less than half. Much less. Resist the temptation to use the plan amount, then set dual rates for less, it will still be too much. Unflyable. Notice the ancient Aerotrol radio shown on the plans. I had one of these about 1960. It was a piece of crap, never worked. Not even remotely suited to this airplane either. Berkeley kits were awful, beautifully drawn plans but sorry wood, cut with a chain saw. Most builders just threw the wood away and used the plans. Well, some used the ribs. You'll have a classic and a fine flyer when built. A 60 is more than you need, a good 46 is plenty.
doug smith - 13/04/2022
I have been an addict admirer of Berkeley Models, not the kit quality, but the designs. Bill Effinger, Berkeley's owner had the wisdom of contracting the top designers of that time including Fred Dunn, Don McGovern, Henry Struck, Roy L. Clough Jr., Paul del Gatto and others to design and prepare the plans and parts for his kits. This is why the plans from that company were superb. Not easy to build but beautifully designed with excellent flying performance. The plans themselves were a work of art. I myself have almost all of his kit plans in my collection, have built some of his models that confirmed what I am expressing. Building instructions were sometimes very basic or printed using a font so small that you had to use a magnifying glass to read them And yes, almost all Berkeley kits were designed for either FF, CL or RC. Obviously, some designs could never be flown free flight, like the Astro Hog. He also made some very nice boat and car kits.
Eduardo - 13/04/2022
Add a comment



Download File(s):
  • Astro Hog (oz969)
  • Plan File Filesize: 2006KB Filename: Astro_Hog_oz969.pdf
  • Supplement Filesize: 624KB Filename: Astro_Hog_oz969_advert.pdf
  • Supplement Filesize: 182KB Filename: Astro_Hog_oz969_decals.pdf
  • Supplement Filesize: 3800KB Filename: Astro_Hog_oz969_instructions_sig.pdf
  • help with downloads


* 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.