bk2 gear ratio
 

hi,
a friend has got an old nosram 3 star motor and would like to no what gear ratio to put it on,
thanks
trekkker

the internal ratio is 2.13 so if i remeber right a 3 star is same as a 6.5 i may be wrong i would say use a 18-19 if its a std spur

thanks carl
we will see how it goes

trekkker

Hi there,

Just to let you know that the internal ratio of the XXX BK2 in infact 2.56:1

I would still recomend that you try the 18-19t pinion though!!!

Jimarea51:p