rod /stroke pk/small frame
'Rod length is 97 mm, stroke is 51mm. Early PK's will have a 19mm flywheel cone, and the ETS onwards have a 24/25 cones. Can't remember offhand if any of the intermediate models used 20/20 cones but measure your flywheel Boss to see what you need. Obviously the thicker the taper the stronger the crank.
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tea5ive
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Juan wrote:'Rod length is 97 mm, stroke is 51mm. Early PK's will have a 19mm flywheel cone, and the ETS onwards have a 24/25 cones. Can't remember offhand if any of the intermediate models used 20/20 cones but measure your flywheel Boss to see what you need. Obviously the thicker the taper the stronger the crank.
wont be needing a vespa crank, now whats the rod length and stroke for a j125 4speed
and a parma135 kit ?No idea about the j crank. I think all of the Parmakits, there's about 20 odd models, are based on a standard configuration crank.
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gaz_powell
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j100/125 95mm long x 48mm stroke