M
MTdream
Well-known member
Next it is time to move on to the Clutching...
As background...I ride between 5,000 and 10,000 feet...The sled has shed approximately 100 lbs., I have not shed any, and am roughly 250 without gear...
Sled has 10PSI of boost (Ulmer Turbo kit)...I moved to fixing the clutching this year...So, I called Val Simmons and then sent him my Secondary, and purchased a SHockwave Helix...He does some magic machinining to both, and allows the clutch to actually shift out fully (design issue with Yammie)
Next, he suggested some different clutching components...
Primary Spring...I had been running the Orange Pink Orange as it gave me really low RPM engagement, so I could creep onto a start (which is very important in steep and deep)...He suggested moving to the Orange Silver Orange, a little stouter spring but allows for nice engagement...
Then we moved onto the Secondary, and I have installed the Arctic Cat Red/White Spring...in 6/0 position...I might migrate to the EPI Purple but this is a starting point for this configuration...
as you all know clutching is a balance, what you take form the Primary, you must take from Secondary, and vice versa...
So, in the Primary, I also went to a dramatically different weight...I had been using the stock weights but just had them LOADED with Rivets to compensate for the turbo...Lots of people have been going with the 8-BU weights when going boost...In talking with Michelle (Oregon Trail sports) she also recommended Val Simmons weights, so I purchased these...
Here is a pic of the profile comparison to the 8-BU weights...They are pictured below the 8-BU, but there are made by Val they are NOT the 8-DJ weights...just below the 8-BU to show the difference...
As background...I ride between 5,000 and 10,000 feet...The sled has shed approximately 100 lbs., I have not shed any, and am roughly 250 without gear...
Sled has 10PSI of boost (Ulmer Turbo kit)...I moved to fixing the clutching this year...So, I called Val Simmons and then sent him my Secondary, and purchased a SHockwave Helix...He does some magic machinining to both, and allows the clutch to actually shift out fully (design issue with Yammie)
Next, he suggested some different clutching components...
Primary Spring...I had been running the Orange Pink Orange as it gave me really low RPM engagement, so I could creep onto a start (which is very important in steep and deep)...He suggested moving to the Orange Silver Orange, a little stouter spring but allows for nice engagement...
Then we moved onto the Secondary, and I have installed the Arctic Cat Red/White Spring...in 6/0 position...I might migrate to the EPI Purple but this is a starting point for this configuration...
as you all know clutching is a balance, what you take form the Primary, you must take from Secondary, and vice versa...
So, in the Primary, I also went to a dramatically different weight...I had been using the stock weights but just had them LOADED with Rivets to compensate for the turbo...Lots of people have been going with the 8-BU weights when going boost...In talking with Michelle (Oregon Trail sports) she also recommended Val Simmons weights, so I purchased these...
Here is a pic of the profile comparison to the 8-BU weights...They are pictured below the 8-BU, but there are made by Val they are NOT the 8-DJ weights...just below the 8-BU to show the difference...
