What happens when going beyond 1:1 shift ratio

[devilrmk]

Ok, so I am trying to figure out a belt blowing issue I had on the water and on the stand this summer. Never blew a belt on the snow last year.

What happens when you get to full shift out on your clutches? I am guessing its going to start slipping like crazy and blow a belt.

I was geared low, 19/43 and pulling 55mph radar on the water so my track would have to be spinning about 20mph faster to hit 1:1.

Not sure if it would, 800 turbo running 8psi boost.

 

[F3doo]

Are you getting water on it? I would imagime the clutches would be alot hotter since you would have to keep the water ,and air,out,and warmer climate too...

Once you go past 1:1,the belt grip area on the secondary gets smaller than the primary so it loses area and grip...

Lower angle helix and /or stiffer secondary spring will help...

Make sure you're not geared too low... On some secondary clutches you might be pulling the belt down so far that it might bottom on the helix and lose it's side grip..

Assuming you have proper alignment..

 

[KSH]

Ok, so I am trying to figure out a belt blowing issue I had on the water and on the stand this summer. Never blew a belt on the snow last year.

What happens when you get to full shift out on your clutches? I am guessing its going to start slipping like crazy and blow a belt.

I was geared low, 19/43 and pulling 55mph radar on the water so my track would have to be spinning about 20mph faster to hit 1:1.

Not sure if it would, 800 turbo running 8psi boost.

You will need more helix or taller gears.

I had the same issue last year, worked great in the powder.
But on the the trail I could grenade a new belt in a half mile.
The belt is basically coming out of your primary, the secondary is at complete shift out.

JMO

 

[milehighassassin]

I blew a belt a couple of weeks ago. Basically got stuck, sled was half rolled over. I pulled the sled to unstick it and roll it over. I didn't turn the sled off and when it went over, the throttle pinned. Belt ended up breaking in two (no delamination) and after it broke it knocked two holes in the plastic the size of my fist, blew out the front shock tower vent and then the belt came out and ripped out the knee vent. That front knee vent is held on by 6 rivets, into stainless steel!

Basically I maxed out my gearing almost instantly. I was a bit worried about the crank but considering the sled was upside down, there was no real load applied. Max RPM read 8,850.

 

[thewayout84]

I blew a belt a couple of weeks ago. Basically got stuck, sled was half rolled over. I pulled the sled to unstick it and roll it over. I didn't turn the sled off and when it went over, the throttle pinned. Belt ended up breaking in two (no delamination) and after it broke it knocked two holes in the plastic the size of my fist, blew out the front shock tower vent and then the belt came out and ripped out the knee vent. That front knee vent is held on by 6 rivets, into stainless steel!

Basically I maxed out my gearing almost instantly. I was a bit worried about the crank but considering the sled was upside down, there was no real load applied. Max RPM read 8,850.

what gear ratio where you on that sled? Iam geared very low and I dont want this to happend.

 

[milehighassassin]

what gear ratio where you on that sled? Iam geared very low and I dont want this to happend.

Stock Assault, I think it is 40/19

I myself am actually going to gear lower. Mostly so I can climb better. If I am on straight flat land, I can just take it easy and back off to prevent blowing a belt.

I would rather have gearing setup for what I do more of and back off.

And lesson learned, always turn your sled off when rolling it.