C & A Pro's....pros/cons

[Irv]

Shimming reduces darting but increase steering effort somewhat. In most cases the less darting more than offsets the increased steering effort.

Do not shim unless you need to.

You might want to try the sled first and see what it is doing and go from there. [If it ain't broke, don't fix it is my philosophy.]

Also, FYI a soft / Rubber shim will compress over time so your darting may get worse as time passes. Even a hard shim will compress into your ski rubber eventually.

Shimming is a fix but does have its issues.

Proper runners and or Ski's and runners are the real answer to a Darting or Handling issue caused by ski's.

I thought the opposite was true, that shimming your ski's put the majority of your contact carbide/runner behind the spindle which makes it easier than being out in front of it?

 

[ranger1]

Ya Irv, I am not talking from experience on this one obviously, but I would have to agree with you that all the weight directly below the spindle would tend to dig in more than the weight transferred back from center. Just my 2cents on this one but tried & proven experience is usually better than my theories,lol!!!

 

[tmamayek1]

Ranger, I forgot to mention that yes, you will have bigger arms after riding a lot with the c&a's and with the bergstroms triple point, but it's well worth it if you like to ride on the seat of your pants. If your just looking for slow cruisen, these aren't for you. As far as shimming, I called Scott at Bergstrom skegs when I bought mine and he gave me some pointers on shimming with the C&A's.

 

[Riceburner]

Shimming reduces darting but increase steering effort somewhat. In most cases the less darting more than offsets the increased steering effort.

Do not shim unless you need to.

You might want to try the sled first and see what it is doing and go from there. [If it ain't broke, don't fix it is my philosophy.]

Also, FYI a soft / Rubber shim will compress over time so your darting may get worse as time passes. Even a hard shim will compress into your ski rubber eventually.

Shimming is a fix but does have its issues.

Proper runners and or Ski's and runners are the real answer to a Darting or Handling issue caused by ski's.

I thought the opposite was true, that shimming your ski's put the majority of your contact carbide/runner behind the spindle which makes it easier than being out in front of it?

Many people think that way.

Think of the physics of a moving object through water or snow.

You are driving along shimmed and you have weight/pressure on the back trying to keep you running straight. [reduce the darting] therefore it is going to be somewhat harder to steer. [the pivot point is ahead of the pressure]

If you have more pressure on the front of the ski driving along [no shims], the ski is going to want to turn easier as the pivot point is behind where the ski pressure is.

This is what causes darting which is the ski wanting to move easily back and forth since the pressure is ahead of the pivot point instead of behind when shimmed.

 

[ranger1]

While I was at a friends garage re-valving my mono shock this past weekend, a friend of his stopped by with an Arctic Cat with the exact C&A pros. He cut down the front & rear of the plastic center keel. Now his runners don't sit flat, they have a curve to them. This way it wouldn't change any geometry, the weight would still be under the spindle. Not sure how he cut them down but a belt sander or electric planner would probably do the job.

 

[darv]

I have a 08 ltx with c&a razors and stud boy 6 car on them I shim with3/8 and my steering effort is not that bad I have 2 shoulder replacements done an rode my buddy 12 apex an I only steer a little harder than his