42 tooth bottom gear

[yannickapexrtx]

i want know if someone try to put a 42 tooth bottom gear in stock apex chaincase.it is there enough place?

 

[grader]

yes and also a 43 fits.

 

[BETHEVIPER]

If it has reverse, you will need to do some machining on the gear and the reverse idler(small gear) for clearance. I have one in mine to make up for 10 tooth drivers, it took alot to get it to fit. It was a worry for a while but I now have a little over 1500mls on it that way and there is no filing in the oil.

 

[yannickapexrtx]

tankyou,no need to machining because i removed all the reverse stuff

 

[yannickapexrtx]

i have now a another question.if i can put a 43 th in bottom,can i put a 23th gear with for total 23/43

 

[BETHEVIPER]

not sure, I know I used 22/42 with a 70 link and there was little room. I also have reverse which bends the chain a bit, though less with a large lower gear. I think your going to be too tight with a 70l

 

[machz69]

I was thinking of going with a 40 bottom gear.. what has to be machined? there's no gear you can buy that is made for a yamaha with reverse?

 

[grader]

there is a 42 reverse gear made that i ran for a few years made by micro-belmont. the tips of the reverse gear need trimming for clearance as stated. a 43 reverse, if you could find one, would not work. gears are made for non-reverse sleds up to 26 top and 43 bottom. i run a 22-42 set with a 70 link chain, and going up 1 more tooth on either gear will require a 72 link. its so close to a perfect fit but wont go together. i still have the 42 reverse on the shelf but it is worn.

 

[Shiek]

gears

"I was thinking of going with a 40 bottom gear.. what has to be machined? there's no gear you can buy that is made for a yamaha with reverse?"


I run a 40 tooth ordered thru port yama for reverse --$150
no machining required . (ulmer also sells gears)

 

[yannickapexrtx]

tank you for your answer,i thinked the same think but i was not sure