Heres a liddle pitcher of a crankshaft or two ,
Mebee an EARLY one with all the Fancy Fandangular things .
Not So Fancy , Fandangulariclly .
Checking the OS parts thing , the 40 & 46 run the same crank ( part No. ) A 35 FP will ' 40 er ise , FP crank fits LA ?? , so ' a choice ' of cranks .
Later less fancy , less counterweighted . So comparison maybe only valid with this taken into account , perhaps .
FSR Cranks , at least in the clones , are only ' Flat Flank ' Flywheel / big end set up ,
where Some are Fully Machined on the rear face , for a more concentrated counterbalance .
Or more eliminated weight opposite counterballance .
Thus :
Just thought Id point it out , for what its worth .