What is this clutch setup??

[raleigh111]

Anyone seen this clutch setup before. Low power snow bikes no more..

 

[wwillf01]

But on longer than hill climb runs that pipe has to get hotter than hell on your leg?

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[raleigh111]

I know right,,, but what is that clutch setup off the rotax?? My wheels are turning.

 

[eric82930]

Is it some kind of hydrologic drive from a bobcat?

 

[heliwrench]

Kinda looks like a straight up dog type clutch? No modulation just slam it in gear and use the torque of the big motor and wheel slip to get going, then pin it to win it up the hill?