clutch
New member
Has anyone done the conversion to run AC/Polaris style weights in their clutch?
I saw that Hi Performance Engineering has a kit to make this possible.
Wondering if anyone has done it as I have a tone of AC weights and absolutely nothing for Yammi....
I saw that Hi Performance Engineering has a kit to make this possible.
Wondering if anyone has done it as I have a tone of AC weights and absolutely nothing for Yammi....
They just use conversion pins so the comet weights (polaris/ac) will fit in a yamaha clutch. Those weights don,t give you the tuning ability like the yammie weights where you can add/subtract mass thru out the shift curve to dial in rpm,s. The yammie weights give a lot more tuneability using 1 helix where as with the fixed mass weights a lot of times your gonna need a lot of different helix/spring combos to get rpm,s right.
yami makes some weight pretty comparable to pilaris weights liek the 89 a10's and the 8 ek weights.
yamaholic22
Active member
Actually the 8DN weights are all VERY similar to polaris profiles as well. I ran a polaris primary on my sx for several years and really got it dialed in great, but Turk is right it takes a lot more screwing around with secondary to get the rpms dialed in right with those style weights because you can't fine tune the weights in different places with small incremements of mass like you can on the yamaha weights. Yamaha really has a great setup for fine tuning of the shift curve.
clutch
New member
Thanks guys!
I was just wondering...the little that I have dealt with the Yammi weights...the rivets are SUCH a pain in the a$$ that I would rather do without. If someone had a bolt kit that would work (similiar to later generation HC's), I wouldn't mind keeping the stock yammi weights. The steel rivets are such a nightmare to get out though that the next time I take these sleds to the mountians (2000 mountain lite phazers), I will just buy new weights instead of messing with trying to drill out the steel rivets.
Just a cat guy trying to cut corners...
I was just wondering...the little that I have dealt with the Yammi weights...the rivets are SUCH a pain in the a$$ that I would rather do without. If someone had a bolt kit that would work (similiar to later generation HC's), I wouldn't mind keeping the stock yammi weights. The steel rivets are such a nightmare to get out though that the next time I take these sleds to the mountians (2000 mountain lite phazers), I will just buy new weights instead of messing with trying to drill out the steel rivets.
Just a cat guy trying to cut corners...