Sam,Attached is an image of a price guideline from Redction Boss. Notice he states with spring or solid drive gear. Solid drive will cause some chatter on the centrifugal shoes when they come into contact with the drum, basket gear with springs reduces said chatter. No springs in basket gear and heavy duty in centrifugal makes for a sharp pull away also.
Cores required. This means the builder needs your stock primary and basket gear, if not there is a core charge to pay also.
All the 15.5 reduction is on a foreman is a stock fourtrax300 basket, no modifications at all.try to follow me on this one , I put the 15.5% in my 2002 , but I can't remember what Dick's did , I gave him a 300 gear and basket , when it was finished he gave me back a gear and basket , I am sure that basket is a 450 , I wonder what that gear is ----- so what I am asking is
??? on a 15.5% you would not use the 450 stock gear or would it have to have been cut ????
or maybe he gave me back the 300 gear , not sure what gear I got at the moment , I need to dig up that set tomorrow -------- worst case I would have to take a spare engine apart --- you never know I might ride this green 450 this weekend
It is nice to be able to come to this site and get info
I don't think the formula in #10 post by SamUK at this forum is correct. It seems logical to me that the series of reduction ratios involved should be simply added together to get overall ratio -- not multiplied as he has posted. Thus my 300ex with primary reduction of 2.833, 5th gear reduction of 1.178, and final chain drive reduction of 2.923 (13 teeth to 38 teeth) should end up at 6.923 overall not the 9.7548 as obtained by multiplying the reductions involved. I don't want to have to run my engine at 8000 rpm to barely hit 40MPH -- anyone agree??Calaculation is, primary reduction x first gear ratio x secondary reduction x final drive ratio