GR002 Posted January 9, 2020 Share Posted January 9, 2020 Does any body know which GY6 engine is the Bailey V5 based on ? Quote Link to comment Share on other sites More sharing options...
Blackburn Mark Posted January 14, 2020 Share Posted January 14, 2020 In short // GY6 "B-Block" (57mm cylinder stud spacing) They make their own crank case. Aftermarket 67mm piston, cylinder and head. The "V 5s" must have a stroker crank to give it 210cc (+2mm crank stroke maybe?) The "B-Block" is quite rare but you can build a 180cc out of the dirt cheap standard block (125-150) with a 63mm piston and cylinder. A guy on youtube built one out of a standard 125cc and flew it... not sure how he got on in the long term. 1 Quote Link to comment Share on other sites More sharing options...
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