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912 Gear box hub bolt pattern


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On the later model Rotax engines the bolt pattern is different to the earlier engines. One of them is a bolt circle of 100mm dia and the other is 4" (101.6mm), but I can't remember which one is which.

 

 

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Thanks for your information all sorted now couldn’t work out why my prop wouldn’t fit bolt pattern a lousy 1.6 mm difference .

 

Cheers

 

 

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