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Measuring clutch shaft paralellism?

Soupy

Expert
Joined
Jan 10, 2017
Messages
359
Age
50
Location
West Michigan
Country
USA
Snowmobile
2017 Sidewinder LTX-LE
Wondering if parallelism is my problem. Other straightedge measurements say yes.


Is this an accepted way to measure it? Bushings, gauge fixturing and engine are tight.
 

STM Horizontal Engine Alignment Tool .png
This what you need
STM Horizontal Engine Alignment Tool
 
What does the belt look like before it goes and when it goes does it go in pieces are snap in half? What speed or circumstances..

Are your clutches completely stock?

Have you added any power?

Do you ride off trail in deeper?

I seriously doubt lack of parallelism... And you'd have a insurmountable issue if it was...
 
What does the belt look like before it goes and when it goes does it go in pieces are snap in half? What speed or circumstances..

Are your clutches completely stock?

Have you added any power?

Do you ride off trail in deeper?

I seriously doubt lack of parallelism... And you'd have a insurmountable issue if it was...
Pieces

Hot clutches

Problems with both stock clutches and with tuning bits added

No added power

Both on and off trail

I understand but I believe that i have the means to check it so I figured I would

Belt height usually as high as possible without creep or squealing, I learned this could be too tight

8jp
 
I've been thinking about the same thing. For those blowing belts, are the clutches parallel? Offset is only 1 of the measurements to worry about.....
 
My clutches where always bang on and still blowing belts. Until I changed the belt and helix.

Also like mentioned before you don't want the belt too high in the clutch. Flush
 
Pieces

Hot clutches

Problems with both stock clutches and with tuning bits added

No added power

Both on and off trail

I understand but I believe that i have the means to check it so I figured I would

Belt height usually as high as possible without creep or squealing, I learned this could be too tight

8jp

Don’t go any tighter than top of sheaves. Especially with gates carbon.


Sent from my iPhone using Tapatalk
 
beat me to it...too high of belt...longer and lower belt easier on belt..

replace secondary spring, too weak....dry cycle secondary to verify no casting flash hang up with sec sheaves...verify clutch rollers are not flat spotted...

seal belly pan with silicone (extremely important if off trail)........run stock gears or lower...

dry cycle primary to verify smooth moveable on pin movement....verify slider puck condition...replace primary spring ...

look on underside of clutch guard for witness (skid) marks from belt...
 


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