Thread: is this normal?
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Old 03-14-2014, 12:29 PM
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Jumpa Jumpa is offline
Motorized Bicycle Elite Member
Join Date: Aug 2011
Location: Cape Cod
Posts: 606
Default Re: is this normal?

Originally Posted by MotorBicycleRacing View Post
His motor does not have a longer connecting rod.

The 40 mm stroke is 2 mm more than a 38 mm stroke motor because the lower connecting rod pin is drilled 1mm closer to the outside.

His motor needs a PK style piston with the lower wrist pin hole.

A Skyhawk / GT 5 piston has the higher hole.

Who knows what a Flying Horse motor really is as some vendors call any and all of their motors by that brand name.
This might help ya
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