R
There is some debate out there on what offset bar to use on the 09 crossfire and Mseries. Even my dealer told me to use the 1.655bar and after 3 belts I decided to take action. Thanks to Geo and WyoBoy for a lot of help the past couple weeks.
Long story short I got 0.060 taken off the rear of the secondary so I could run the 1.507 offset.
Last thursday I set offset too 1.655. Found a groomed trail to do some runs on. Each run was 2 miles long, 1 mile down and 1 mile back and each time at a constant 60mph. Between runs I always gave my clutch and belt time to cool down below 90F. Temps that day were warmest we have had all winter...40F to be exact. My sled has no vents (which I will be adding this week) and temps still tend to be a little warm for doing runs without much load on the sled.
run #1 - offset = 1.655 belt temp = 180
stationary pri temp = 170F movable sec temp = 105
movable pri temp = 150 stationary sec temp = 130
run #2 - offset = 1.625 belt temp = 160
stationary pri temp = 150 movable sec temp = 105
movable pri temp = 135 stationary sec temp = 125
run #3 - offset 1.595 belt temp = 155
stationary pri temp = 150 movable sec temp = 90
movable pri temp = 130 stationary sec temp = 100
run #4 - offset 1.565 belt temp = 160
stationary pri temp = 140 movable sec temp = 90
movable pri temp = 130 stationary sec temp = 125
run #5 - offset 1.535 belt temp = 150
stationary pri temp = 140 movable sec temp = 85
movable pri temp = 130 stationary sec temp = 130
run #6 - offset 1.505 belt temp = 150
stationary pri temp = 130 movable sec temp = 95
movable pri temp = 130 stationary sec temp = 130
I tried my best to get the hottest reading i could on each sheave...but u could move the IR gun 1/4 of an inch and it would change. I am in no way an expert...but generally temps dropped off the closer I got to the 1.507 offset. So take it for what its worth
Long story short I got 0.060 taken off the rear of the secondary so I could run the 1.507 offset.
Last thursday I set offset too 1.655. Found a groomed trail to do some runs on. Each run was 2 miles long, 1 mile down and 1 mile back and each time at a constant 60mph. Between runs I always gave my clutch and belt time to cool down below 90F. Temps that day were warmest we have had all winter...40F to be exact. My sled has no vents (which I will be adding this week) and temps still tend to be a little warm for doing runs without much load on the sled.
run #1 - offset = 1.655 belt temp = 180
stationary pri temp = 170F movable sec temp = 105
movable pri temp = 150 stationary sec temp = 130
run #2 - offset = 1.625 belt temp = 160
stationary pri temp = 150 movable sec temp = 105
movable pri temp = 135 stationary sec temp = 125
run #3 - offset 1.595 belt temp = 155
stationary pri temp = 150 movable sec temp = 90
movable pri temp = 130 stationary sec temp = 100
run #4 - offset 1.565 belt temp = 160
stationary pri temp = 140 movable sec temp = 90
movable pri temp = 130 stationary sec temp = 125
run #5 - offset 1.535 belt temp = 150
stationary pri temp = 140 movable sec temp = 85
movable pri temp = 130 stationary sec temp = 130
run #6 - offset 1.505 belt temp = 150
stationary pri temp = 130 movable sec temp = 95
movable pri temp = 130 stationary sec temp = 130
I tried my best to get the hottest reading i could on each sheave...but u could move the IR gun 1/4 of an inch and it would change. I am in no way an expert...but generally temps dropped off the closer I got to the 1.507 offset. So take it for what its worth
