stingray719
TY 4 Stroke God
Try it then let us know.
Belt comparison
- Thread starter Studroes144
- Start date
Try it then let us know.
Studroes144
TY 4 Stroke God
- Joined
- Oct 30, 2013
- Messages
- 2,897
- Reaction score
- 955
- Points
- 973
- Location
- Lowville, NY Tug hill snowmobiling
Just got a little curious so I pulled the springs out of the primary and secondary on my sled to see what the belts look like when I duplicate full shift of the clutches. Will the secondary fully open and the primary fully closed the 8jp and the gates belt both get to the same exact spot. I have marks on the primary to check to see how far the belt travels up the face. The 8jp and gates both go exactly to that line and stop, the 8dn goes just a tad past it, a 1/16th of an inch at most, but it does travel just a bit more, now at full shift the 8jp and gates are both pretty snug, the 8dn still has a bit of play in it. Now with mine, atleast with the gates belt, after a few seconds of wot it would reach 88-8900 rpm and hold steady until about 100 mph and then as speed continued to increase the rpm gained as well and eventually was hitting the rev limiter. Now like I stated in the first post, the best speed I got was with the gates at 108 mph in 1000', I did hold it past 1000' several times to try and get more, but it would continue to hit the rev limiter and wouldn't gain, so it's acting as tho it's either fully shifted or the secondary spring is bound up, i had the .080" washers so I tried those out as well to space the helix out in case maybe it was the spring binding up but it didn't change anything, my assumption now is that that's where mine reached full shift, could be wrong, chime in with any other ideas. I have checked the secondary spring to see if the paint is gone on the inside of the spring and it is not so I'm quite sure there's no coil bind issues. On my secondary the helix bottoms out on the clutch body itself which is normal, just curious now if the stock helix will bottom out in the same spot or if it will allow just a slight bit more travel. Will throw the stock helix on in the next day or two and see if that changes anything.
I just keep thinking no need to adjust deflection between belts and well I don't know what to think after that. I know it has nothing to do with top end but does everywhere else. Mine is terrible unless deflection is right between all those belts.
Studroes144
TY 4 Stroke God
- Joined
- Oct 30, 2013
- Messages
- 2,897
- Reaction score
- 955
- Points
- 973
- Location
- Lowville, NY Tug hill snowmobiling
I was surprised to see it that way but all 3 belts sit almost exactly the same in the secondary, not enough difference to even consider adjusting. Last winter when others started switching to the 8dn I figured I'd throw one on and see what it looked like. I didn't have a new one so I just took the one off my old mans apex and when I put it on it sat down below the top of the secondary, maybe an 1/8th inch or so, so I didn't bother trying it since I had good luck with the 8jp, yes it was a used belt so that may have made some difference, but for some reason this new 8dn I got doesn't sit any differently than the others. I will try and get a circumference measurement in all 3 sometime
You must have a narrow 8dn. Yes they are out there. I think your turbo is really affecting your results and you should remind everyone often that you have a turbo so results do not apply to N.A. Sleds. Can be very confusing and misleading if not stated.
