I put on 250 km's this weekend and my arms are killing me. My sled is darting terribly, what can I do to it? I noticed that the front shocks have too much preload, if I back them off will it help? I was also thinking of buying those easy steer plactic guides that fasten ahead of the runners. It's not enjoyable when you have to fight with it too keep it straight.
Yama49601
Member
Shimming the skis really helps a lot. See this page
A K MtnViper
New member
Shimming the ski's should fix the problem, but if your still not happy Simmons skis do not dart.
tedgoesfast
New member
get your ski pressure right i use precision skies on my sx 700
davessrx
New member
I shimmed our sxr 700 and what a difference!!!! I used an old piece of a slide and glued it to the bottom of the rubber mount in the rear, easy fix and CHEAP!!!
Have you played with your transfer rods I had tweaked mine in and took care of the darting problem last weekend. I'm just throwing out a thought
I will start with the pressure and check if I need to shim, I did install drop brackets to raise the rear so the front will also have changed now.
full tilt viper
New member
darting
Just picked up a viper for my wife,same problem.The local yamaha dealer recomended woodies doolies, problem solved .Transformed that sled ,90% better. On my sled i run simmons skiis, i beleive they are the ultimate choice on most snowmobiles.
Just picked up a viper for my wife,same problem.The local yamaha dealer recomended woodies doolies, problem solved .Transformed that sled ,90% better. On my sled i run simmons skiis, i beleive they are the ultimate choice on most snowmobiles.
JERSEYJOE
Member
Doolies
Yes The Doolies Help But You Will Increase Drag And Lose Some Top End And Fuel Economy. Shimming It A Better Idea.
Yes The Doolies Help But You Will Increase Drag And Lose Some Top End And Fuel Economy. Shimming It A Better Idea.
Is there a way to adjust the rear suspension to take a little bit of weight off the skies? and if so, how is it done? My runners a woren evenly and do not think shimming is MY answer.
JERSEYJOE
Member
Weight Off Skis.
Reduce The Length Of The Front Limiter Strap Until You Have About 3/8 To 1/2 Inch Of Thread Showing. Seriously The Shimming Works Magic. All My Yamahas Have Skis Shimmed. The Srx Is Also Running Stud Boy Deuce Bars. The Viper Is Shimmed And Is Running Woodys Doolies, And The Apext Is Running Shims And Stud Boy Deuce Bars.
Shimming Is Easy.. Remove The Ski And Install A 1/4 Shim Under The Rear Portion Of The Ski Bumber. Install The Ski And You Are Done. The Difference Even With The Stock Runners Is Unreal. If You Examine Your Current Ski Runner I Would Bet That The Front Portion Of The Runner Is Worn Out And The Rearmost Portion Is Still Sharp. The Shimming Corrects This Major Yamaha Design Flaw And Puts The Weight On The Rear Of The Steering Axis Rather Than In Front Of It. You Would Think That Yamaha Would Have Fixed This By Now..
Reduce The Length Of The Front Limiter Strap Until You Have About 3/8 To 1/2 Inch Of Thread Showing. Seriously The Shimming Works Magic. All My Yamahas Have Skis Shimmed. The Srx Is Also Running Stud Boy Deuce Bars. The Viper Is Shimmed And Is Running Woodys Doolies, And The Apext Is Running Shims And Stud Boy Deuce Bars.
Shimming Is Easy.. Remove The Ski And Install A 1/4 Shim Under The Rear Portion Of The Ski Bumber. Install The Ski And You Are Done. The Difference Even With The Stock Runners Is Unreal. If You Examine Your Current Ski Runner I Would Bet That The Front Portion Of The Runner Is Worn Out And The Rearmost Portion Is Still Sharp. The Shimming Corrects This Major Yamaha Design Flaw And Puts The Weight On The Rear Of The Steering Axis Rather Than In Front Of It. You Would Think That Yamaha Would Have Fixed This By Now..
troyhatt
New member
darting
had to put a set of handlebars on from a crash. had the bars adjusted too far up. could barely drive it the thing darted so bad.. adjusted bars back down problem solved.. Something to try..
had to put a set of handlebars on from a crash. had the bars adjusted too far up. could barely drive it the thing darted so bad.. adjusted bars back down problem solved.. Something to try..
saskattakman
New member
tried shimming my stock srx rubbers...didnt work rubbers too soft to hold shim in place....just squished out....are new ones harder or do i have to go with a c&a style rubber???
chevyracer68 said:
Use weatherstrip adhevsive and a screw to keep it in place
3000miles and mine are still their with stock skies
edrewboy
New member
you can adjust your limiter strap, get more track on the ground. 
Yama49601
Member
When you get them from Bergstroms they send you stainless steel screws. You can use permatex gasket maker too instead of weather strip adhesive.
A K MtnViper
New member
dewieiii said:
Try shimming if you have a darting problem, the even wear on your runners does not mean that you don't need to shim to solve the darting problem. More pressure on the rear of the skis makes them tend to go straight and more in front makes them want to follow ruts.
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saskattakman
New member
i used weatherstrip adhesive and 2 brass screws to attach the rubber....install the ski and it just flexes the rubber....
Yama49601
Member
chevyracer68 said:
What did you use for shims?
JERSEYJOE
Member
Shimming
I Am Working On A New Approach To The Shimming Idea. I Am Making Some Tapered Aluminum Wedges That Will Go Between The Ski And The Rubber. Sort Of Like Caster Shims For Solid Axle Trucks. I Am Making Various Tapers. They Will Apply Even Pressure Over The Entire Rubber And It Willnot Crush. The Rubbers On My Apex Crushed And The Shim Was Reduced To Nothing. If They Work I Will Have Lots Of Them To Give Out.
I Am Working On A New Approach To The Shimming Idea. I Am Making Some Tapered Aluminum Wedges That Will Go Between The Ski And The Rubber. Sort Of Like Caster Shims For Solid Axle Trucks. I Am Making Various Tapers. They Will Apply Even Pressure Over The Entire Rubber And It Willnot Crush. The Rubbers On My Apex Crushed And The Shim Was Reduced To Nothing. If They Work I Will Have Lots Of Them To Give Out.