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RX-1 Drive Belt Squeal

Nice Rumble

Expert
Joined
Mar 30, 2004
Messages
321
Location
New London, NH
My RX-1's drive belt squeal's under acceleration. It goes away at higher rpm once the clutch upshifts. It used to do it at idle so I took it to the dealer and he shimmed the secondary. The squeal went away at idle but persisted under acceleration. I took it back for the second time and they shimmed some more. It helped a little but it is still there. Anyone else experience this? I also cleaned the sheaves with contact cleaner and a scotchbright pad. I also installed a new belt. Anyone have any ideas? I know it's harmless but it's annoying. For what I paid for this machine it should not be doing this. None of my other Yamaha sleds (all 2-strokes) ever did this.
 

If its squealing, its slipping, you might want to try tightening your secondary 20 to 30 degrees (just for testing, this will mess up your shift) to see if the squeal drops... if it stops squealing, then you might want to go ahead and get a stage2 kit from Matt, thereby killing 2 birds.....

BTW: You could perfectly well have had other sleds doing that, just that you couldn't hear it over the motor.
 
How many miles on your sled? My belt would squeal now and again and just go away. The last time.... it persisted... then my jackshaft bearing fried. I can't help but think it was a sign that I overlooked. Keep an eye on it. When the grease burns out of the bearing it creates putrid stink.
 
squeal

Mine use to squeal so I told dealer. He claimed that if you do a lot of riding and lock you track up when you brake, there is 3 screws on the back of the secondary that will wear. These srews are the stopper when the secondary closes. They gave me three new ones and I changed them and never had any more squealing. Shimming the secondary is not the answer.
 
If you want to get rid of the sound ,get your center to center right on .No two belts are the same length .Belts made by the same manufacturer may vary as much as 1/2 inch in circumference.The correct center distance should give a belt deflection of approximately an inch.Keeping the center distance too long makes the belt grind around the driving hub and the machine tends to creep.Too short of a center distance means the belt is too far out on the driven and you almost start in second gear with a bog and bad low end performance as a result. ;)! :ORC
 
Blue shadow said:
Keeping the center distance too long makes the belt grind around the driving hub and the machine tends to creep.Too short of a center distance means the belt is too far out on the driven and you almost start in second gear with a bog and bad low end performance as a result. ;)! :ORC

Don't you have that reversed??; if the belt sits higher in the secondary(either from shimming the secondary or shortening the center-to-center it is like starting in a "LOWER Gear" - NOT a higher one. If you don't think so, try changing a belt and not spending a few extra minutes to make sure it is worked out toward the top of the secondary as far as possible.

As far as the squealing goes, I was looking at my secondary and thought my belt was sitting too low (deeper) in the secondary. I proceeded to add some shims to the adjusting bolts to raise it. The belt squealed from the time I put them in until I removed them. Seems the RX-1 + Warrior like to have the belt level or just below the edge of the rim on the secondary. I thiink the manual says +0.5 to -1.5mm(? check the owners manual for the exact measurement)
 
See my above post, belt deflection is important to overall transmission performance. Get an aftermarket external adjuster, its worth it. LaLaLa
 


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