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Jul 29, 2019, 08:57 AM
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Discussion

Prerotator


Been experimenting with friction prerotators.

Seen a few similar setups and will try and find the links.

I 3d printed a few parts and run bench tests to see if it would work.

Fitted it to my whippit for field test I will get some video soon.

Forward on the elevator engages the drive and acts like a brake when landed.


PREROTATOR BENCH TEST 1 FRONT PUSHRODS (0 min 48 sec)
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Jul 29, 2019, 09:44 AM
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Rear pushrod setup

PREROTATOR BENCH TEST 2 BACK PUSHRODS (0 min 53 sec)
Jul 29, 2019, 09:47 AM
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Remote drive


Motor can be hidden in the fuselage

RC PREROTATOR REMOTE MOTOR DRIVE REAR PUSHRODS (0 min 56 sec)
Jul 29, 2019, 09:51 AM
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Whippit ready for tests

WHIPPIT PREROTATOR TEST (2 min 1 sec)
Last edited by Jockadopolus; Jul 30, 2019 at 09:35 AM. Reason: Added video
Jul 29, 2019, 09:09 PM
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Joe ..that's all very nice... looks like you have taken to 3D like a duck to water.
Chris...
Jul 30, 2019, 09:38 AM
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Chris I like it better than metal and cheaper than balsa with the bonus of working in a warm room rather than a cold shed.
Jul 30, 2019, 06:27 PM
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Joe I think that most thing are cheaper than balsa these days..
That two blade Whippit is a credit to you. Did you print the Mantis pilot ?
Chris...
Jul 31, 2019, 02:17 AM
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Yes it was a free file from thingiverse
https://www.thingiverse.com/thing:1761697

Section on printed pilots here on rc groups.
https://www.rcgroups.com/forums/show...s#post42292581


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