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Old Oct 30, 2014, 08:42 PM
Registered User
Joined Jul 2005
754 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 06:43 AM.
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Old Feb 19, 2015, 04:18 PM
reading, Great Britain (UK)
Joined Oct 2004
13 Posts
extra 300

Here is a project Ive been working on to learn Rhino. Its an Extra 300L. Would love to build this model for real at some point.
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Old Feb 19, 2015, 04:26 PM
I am the BBQ Ninja
Willmsy's Avatar
United States, MN, Woodbury
Joined Jan 2003
3,723 Posts
Labor of Love and Hate!

I have had an off and on again relationship with this project... Twin 90mm, 8 foot long...
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Old Feb 20, 2015, 01:46 AM
who has rabbit ears down
Captain Canardly's Avatar
United States, MN, Buffalo
Joined Jan 2007
3,831 Posts
Nuthin' like the slow burn Willmsey! I have fond memories of the flight a while ago!
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