dazza wrote:
Thanks i try a 50 on the back
and you will go back to what you had
52 + 14=3.71
50 + 13=3.84
52 + 13=4.00
do the math if you like the 4 to 1 ratio stick with it
I work it out this way you have X amount of horse power a 13 front sprocket has 6 to 7 teeth in contact with the chain any one time
to the load is shared x + 6.5 more teeth longer chain /sprocket life .
So now you know the ratio you want buy your sprockets to suite I run 15 and adjust the rear to suit rivet the chain on 2 front sprockets per chain.
my 2 bobs worth