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Discussion Starter · #1 ·
Looking for some help with sewing machine like sound from my engine which gets louder with the rpm’s.

First off I had my buddy that wrenches on bikes install a Rivera ring gear conversion and new pushrod tubes on my bike. Now after the work I hear this sound which was not there before. (Or at lease noticeable to me)

When I asked him about it, the only thing he said he did different was tighten the primary chain because it was a little loose.

Could the primary chain cause this? Or maybe the pushrods not adjusted right?

Sorry for the long post.

Thanks
 

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Discussion Starter · #3 ·
Thanks Chuck.
 

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flyin hawaiian said:
Looking for some help with sewing machine like sound from my engine which gets louder with the rpm’s.

First off I had my buddy that wrenches on bikes install a Rivera ring gear conversion and new pushrod tubes on my bike. Now after the work I hear this sound which was not there before. (Or at lease noticeable to me)

When I asked him about it, the only thing he said he did different was tighten the primary chain because it was a little loose.

Could the primary chain cause this? Or maybe the pushrods not adjusted right?

Sorry for the long post.
Thanks
I think you may need to get a new bobbin.
 
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