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Old Oct 30, 2014, 09:42 PM
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Joined Jul 2005
750 Posts
the Folly II

This big FF model was constructed in 1937 to fly in competition at the California State Fair. The designer was Rod Doyle. It came in 2nd -- beaten by a very similar razorback design. Found the plan on outerzone.

The wingspan was 6 feet and the plane weighed 2.5 lbs. Those wheels were 3.25 inches in diameter. The engine had an ignition system including a coil, breaker points, a battery and an adjustable spark advance. The parasol wing was elevated on a rack bent from 1/8-inch music wire.

There are now quite a few different propellers available for download on GrabCAD. A wonderful resource. The prop shown was downloaded here:


Modeled in Rhino3D 5.0 with the tSplines plug in. I did the fuse in tSplines and the rest in Rhino. Materials and colors via Auxpecker 2. Not quite done, but getting close. Michael
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Last edited by mcg; Nov 14, 2014 at 07:43 AM.
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