Overload clutch ?

by Ralph Keeping in General Tech Discussion 13 years ago

How can you tell if a 912 gearbox has an overload clutch installed, without dismantiling the gearbox? It seems to me that the externals are identical or am I missing something?

Thanks,

Ralph

Re: Overload clutch ?

by Roger Lee » 13 years ago

Roger Lee

131 5.38k 5.44k

Hi Ralph,

You don't do a friction torque test on a gearbox with no slipper clutch. An easy way to check is the gearbox without a clutch will not have any free rotation of 15-30 degrees depending on which dog gear set you have. The gearbox with a slipper clutch has that free rotation. You can feel it just by grabbing the prop and turning it slightly.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

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