Whiplash (oz7767)

 

Whiplash (oz7767) by Dick Sarpolus from American Aircraft Modeler 1974 - plan thumbnail

About this Plan

Whiplash. Radio control sport model. Uses a foam core wing.

Quote: "If you were in it while it was flying, you'd understand how this plane got its name. Whiplash, by Dick Sarpolus.

If weather conditions in different parts of the country have an effect on aircraft designs, then the Whiplash is a result of our northeastern (New Jersey) winter climate. I am primarily a pattern competition flier, and after the last contest in October, I hang the current hot ship on the workshop wall until spring. I just don't enjoy serious practicing in cold, wet, windy winter weather - l'd rather not risk a good pattern aircraft in casual fun flying.

Our club field does see a lot of winter activity and, without the contest season pressure, it is a lot of fun. Because of the weather, our winter flying is done a little differently - we don't plan on a whole day at the field. Much of the time is spent with hot coffee in a handy car.

For this type of flying, a small, easily assembled plane (especially one that will fit in the car assembled) is a real advantage. We observed some fliers who flew powered gliders exclusively and, while this was not what we wanted (can't practice Class C maneuvers with a glider), the simplicity of hand launching appealed to us. Elimination of landing gear would further simplify the plane and enable better performance with a small engine.

One characteristic we had to have to allow pattern practice was full aerobatic capability. To be competitive in Pattern, you must fly a lot. To do all the flying with the same aircraft would, of course, be ideal. However, that is not a necessity. The important thing is to fly something that will perform all the maneuvers.

Don't think that these desired charcteristics result in a hot, 'experts only' airplane. The Whiplash is not a basic trainer, but it did turn out to be a good intermediate ship. Anyone who can fly basic ships like the Falcon 56 (oz2424), J-Craft, etc can fly our Whiplash. And the expert flier can have plenty of fun without worrying about his top contest ship.

We settled on 19 power to keep the size down and still achieve acceptable performance. We would be using four channels, so the equipment weight would be considerable..."

Whiplash by Dick Sarpolus, November 1974 AAM

Update 03/06/2016: article pages, text & pics added, thanks to RFJ.

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Article pages, text & pics.

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Whiplash (oz7767) by Dick Sarpolus from American Aircraft Modeler 1974 - model pic

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