Originally Posted by kickass
(Can some one tell me the diameter of the evo 111 EFRA crank bore????.
It should be no more than 7 mm. can some one confirm this.
The IFMAR crank bore is over 8 mm. These are the ones snapping in this country.
Has any one snapped an EFRA crank???.)
Can any one be bothered to measure their hole???
Regards
Alex.K
the ifmar crank has a bore of about 9.5mm, and the efra spec is under 7mm, but there one BIG problem if your hoping the efra crank is stronger because the cranks are identical but to make it efra legal they have pressed an insert down the crank bore to reduce it to 7mm. how rough is that
and another big problem, my efra legal crank snapped in half today for no reason what so ever, not impressed at all. will be sticking with reliable nova rossi motor from now on