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Mounting a prop on a Rotax 503

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mmatt

Well-Known Member
Joined
Apr 13, 2015
Messages
315
Location
Canada
Does anyone know what size bolts to use when mounting a 2 blade wooden prop on a Rotax 503 with a B gearbox?

There are two different sized holes and the bolts from the old prop that I have fit into the larger holes, but the new prop I just got (a GSC 64x36) has smaller holes and the old bolts don't fit.

Also, is there a proper mounting procedure? I was quite disappointed to see that no instructions came with the prop. I've never mounted a prop on an engine before so any and all info on this would be greatly appreciated!

Thanks guys!
 
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