Scram (oz5070)

 

Scram (oz5070) by Ray Heit 1976 - plan thumbnail

About this Plan

Scram. Free flight power model.

The Ray Heit Scram (oz2578) was first published in Flying Aces, July 1938. This here is a re-drawn plan done for MB by Al Patterson, in 1976.

Quote: "OLD TIMER Model of the Month. Designed by Ray Heit. Redrawn by Al Patterson. Text by Bill Northrop.

If you should happen to leaf through our copy of July 1938 Flying Aces, there are two equally old pieces of paper that will fall out. One is a very crude attempt at plotting a full size airfoil, and the other is a list of materials with prices. Both items apply to the gas model construction article in that issue - Ray Heit's 'Scram.'

Al Patterson's sketch of the Scram, traced from one of the typically poorly reproduced Flying Aces photos, pretty well explains why we were so interested in the design. The 83 inch span cabin model weighed only 3 pounds, and placed 8th in the 1937 Nationals limited motor run event. Ray's Bay Ridge Mike and Ike became better known designs a few years later, but the similarity in design was very evident.

Free flight old timers will excuse us if we point out the excellent R/C assist possibilities of Scram. Hinged surfaces can be located along the existing spar lines, though the elevator could be limited in area by adding extra spans and a hinge line about 2-1/2 inches aft of the existing spar. Following the tradi-tion of most early plans, incidence and balance point locations were not in-cluded. Start at 1 /3 back from the lead-ing edge, and bring lots of shim stock the first time out.

Incidentally, that old material list was interesting. Five foot lengths of 1/4 square balsa averaged around 3-1/2 to 4-1/2 cents each, a pair of 4-1/2 inch airwheels was $1.75, and a 9 by 12 inch piece of 1/4 inch plywood was 20 to 30 cents. The total tab was $6.18, about the cost of two Peanut kits!"

Supplementary file notes

Planfile includes article.

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Scram (oz5070) by Ray Heit 1976 - model pic

Datafile:

Scram (oz5070) by Ray Heit 1976 - pic 003.jpg
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Scram (oz5070) by Ray Heit 1976 - pic 004.jpg
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* Credit field

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Scaling

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.

 

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