yamiman
New member
how do i measure the rollers on my viper? i bought the sled used and had problems with my sled pulling rpm and ive done everything possible. on hardpack it will pull 8500 but in deeper but lighter powder it will only pull 7800-8100 rmp. i bought this sled used with a 141" kit on it since then i made it into a 136 with a 1.25" track. all the clutching is stock, now i have my doubts with the rollers. this is all at sea level