clutching revxp 154 revy

[dcski701]

i have been reading, calling dealers and trying to figure out this clutch problem for days now. The machine hooks up great at full rpm and i am getting about 7900 rpm in clicker 1. My sled over revs at low speed (trail). at about 6000 rpm and 30-40km in clicker 1. Because of this the belt is being chewed up-cords are showing after 10 hrs. the primary has a shiny spot 1 inch wide about 3/4 of the way up where you can tell it is not engaging the belt. From what i am reading the sled needs a gear change anyway so i was going to go from the stock 21 to 20. I have no idea what to start for adding set screw pin weight. From what i have put together it sounds like about 25 mm (3.18 grams). If i don't do a gear change and leave the stock gearing at 21/45 i guess i could start with the 16mm (2.35 grams)pin inserts. Does this sound about right? attached is a pic of my primary.

 

[Wyoming T/A]

looks to me like your not using the top of the clutch,you will not see that scuffed up unless you run a lot over75 mph, gear it down to 19-45 , we find adjusting the belt a little further out of the secondary help with the slippage..we are gearing both our 154x's to 19-45 this week

 

[plcalnan]

looks to me like your not using the top of the clutch,you will not see that scuffed up unless you run a lot over75 mph, gear it down to 19-45 , we find adjusting the belt a little further out of the secondary help with the slippage..we are gearing both our 154x's to 19-45 this week

When you gear to 19/45 do you have to change chain length?

 

[dcski701]

i have heard both-some say you have to some say you don't, the majority have said that u need to change the length.

if i change gearing, do i have to add clutch weight? if so how much?