idler wheel size issues

Concept Carbon

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Jan 31, 2006
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45
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Ottawa, ON.
So i went to my local soon to be out of business yammy dealer and there haveing a 50% off sale on everything, i picked up a couple idler wheels but 2 i beleive are for a doo, they are 5.250" od stock is 5.050" on the dial caliper, supposed to be 5.375 and 5.125 funny

MY question is can i run these in replacement with the center ones? or am i going to have to change all the idlers to 5.250?
 
Last edited:
Running the doo wheels will give you a bit of oversize for less friction and better slide wear (and top speed).
 
you need to change all 6 to a bigger size, you cant just run 2 differnt sizes. if you just change 2 of them it will not keep the track running flat and it will create a ripple in it at speed and cause weird hyfax wear thru problems somewhere on the rail.
 
I changed all mine to the Poo ones recommended somewhere on here. I was wondering if the larger rear wheels would also benefit or just leave them?
 
Really???..you can do that?...awe man...I just purchased all six last year for Yamaha specs...I busted 1..and can't get it replaced(dealersip doesn't carryem anymore)...

D'oh!!!
 
mrviper700 said:
you need to change all 6 to a bigger size, you cant just run 2 differnt sizes. if you just change 2 of them it will not keep the track running flat and it will create a ripple in it at speed and cause weird hyfax wear thru problems somewhere on the rail.


thanks if i put 6 bigger idlers in do i need to change the rear to 7.5"
 
No. It is just something else that will help, but not a must do.as long as all 6 are changed up front the rears will still be fine and the track will still be on a even plane running at speed, the rears are only a 1/4" further down then stock, not alot of drag at the back like up at the curve area, the larger radius allows the track to roll easier with the rears, thats all.
 


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