Strato Streak 68 (oz6902)


Strato Streak 68 (oz6902) by Frank Heeb from American Aircraft Modeler 1968 - plan thumbnail

About this Plan

Strato Streak 68. Free flight power model.

Quote: "Updating a 1941 design results in a Half-A free-flight model with a hunger for altitude. Strato Streak 68, by Frank Heeb.

WHAT was the hottest climbing gas model in the wild competition of the early 1940's? And what is the best performing, most winning 'Old-Time gas model' in this popular modern event a model so hot that some factions of the Old-Time movement want to have it outlawed from their contests? The answer to both is Louis Garami's Strato Streak (oz67), an Atom-powered bomb that was published in the December, 1941 Air Trails.

I got involved in the Old-Time competition about two years ago, and it didn't take much magazine research before I came across the Strato-Streak. There are few pre-1942 gas model designs that can be flown successfully with modern glow-plug engines, but the S-S has the following favorable design features: Large stab at 40% of the wing area; polyhedral wing; fairly thin, flat-bottom, wing section; wing pylon; generous fin area; clean fuselage, minimum cross section; short nose; sensible structure, easy to build and repair.

I built the 1941 S-S, modified for a TD 049; this was the first S-S I had ever seen. In the beginning, I had trouble adjusting the model because I thought I was smarter than Mr Garami and didn't start out with the right side-thrust he recommended. I wound up with 17 degrees down-thrust and 4 degrees right side-thrust, prop reversed, right stab-tilt, and slight right rudder tab. The model finally climbed and glided right! All of these adjustments force the model into the 'grooviest' right spiral climb I have ever achieved with any gas job - this is with a wide right-glide circle. The altitude gained on a 20 sec ROG flight is simply ridiculous, for the model is almost out of sight straight up. I placed second at the 1966 Chicago Nationals Old-Time pylon event right between two other Strato-Streaks.

After some thought on the subject of why the 26 year old S-S design is outstanding and still competitive (one almost won 3/2A at Chicago) in modern AMA events, I became convinced that an updated, slightly enlarged S-S would be just the thing for the short engine run and lower max contests that are popular in the Midwest. Strato_Streak 68 is the result.

I wanted the model capable of utilizing full TD 049 thrust with hot fuel, so the wing area was increased from 220 to 275 sq in. The fuselage was slimmed down, but the moments, pylon height, stab area, fin area, etc., are all proportional to the original. Multi-spar construction was used for a high strength-to-weight ratio and rigidity. The wing loading came out at 3 oz per 100 sq in. The 1941 original had 5.5 oz per 100 sq in. The new model gross weight is 6.5 oz; the original heavyweight ignition job weighed 12-plus oz. So the decreased wing loading and increased power are the major contributors to increased performance.

It is not clear why Mr Garami used five vertical fins in this design. All of this fin area, in conjunction with sufficient right-thrust to start the model out to the right, does seem to make the S-S 'groove' in a very rigid right spiral climb pattern. The only drawback to this..."

Hi Steve - Here is Frank Heeb's Strato Streak 68 from American Aircraft Modeler magazine issue 12-68. Regards,

Direct submission to Outerzone.

Supplementary file notes

Article pages, text and pics.


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

Strato Streak 68 (oz6902) by Frank Heeb from American Aircraft Modeler 1968 - model pic

  • (oz6902)
    Strato Streak 68
    by Frank Heeb
    from American Aircraft Modeler
    December 1968 
    57in span
    IC F/F Pylon
    clean :)
    all formers complete :)
    got article :)
  • Submitted: 26/07/2015
    Filesize: 326KB
    Format: • PDFbitmap
    Credit*: theshadow

Strato Streak 68 (oz6902) by Frank Heeb from American Aircraft Modeler 1968 - pic 003.jpg

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

User comments

No comments yet for this plan. Got something to say about this one?
Add a comment



Download File(s):
  • Strato Streak 68 (oz6902)
  • Plan File Filesize: 326KB Filename: Stratostreak_68-AAM-12-68_oz6902.pdf
  • Supplement Filesize: 803KB Filename: Stratostreak_68-AAM-12-68_oz6902_article.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, 2011-2021.

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.