- Years Snowmobiling
- 2016 indy 600 sp, 2017 indy 600 sp es
Dave, how did that secondary work ?Changing from the 11-64 to 10-64's did not change topend rpm. Still dead nuts on 7950. Last time I did not check mph. This time I watched speedo right at 100mph and gps said max speed of 98. So I have a baseline there. I just changed the secondary spring to a 140-220 blk green Same road tomorrow, pretty much same conditions and same amount of gas will be in tank. Will see if I gain some rpm and if that equal more topend mph.