ggfirestar

it's A starter Bendix just like the one on you're car when the shaft turns inside the Bendix it's made like a screw and the gear kicks out.

Greg, I am going to build a pre-rotor with a goped engine. I have been looking at the one you made and understand most of what you did. The only thing I don't understand is about the top where the shaft connects to the ring gear. If I heard right on your vidio you say that when the power is shut down the gear drops down. If so what pops it up to start the blades to start rotate?
Thank you, Jim

http://www.gyroplanepassion.com/History.html
George click on this link

Sorry to here your quest for a high torque pre-rotator has cost you one ship.
I like the way you put your system together.
Is that a Falcon gyro?
Cheers,
Mitch

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1814477
Click on this web site for the B-12 vs Sea Foam

i'm starting to build a goped prerotator from pics off the forum and am kinda guessing on the pulley sizes etc.any update info?