too much weight?

[inkstreme_05]

hey guys.
Im running 2012 SBA 144. In my primary it's a blue/pink slp primary spring and 68g slp Mtx weights, I put 2g on the inside(closest to bushing) and 3G on the outside of the weights.
My question is: is that too much weight? the sled seems to like it and at WOT right at the start it hits 8250 at most then comes back down and I stay no higher than 8150. would you say that is fine? im New to the whole playing with clutch stuff and got this set up from a guy I met at a Sled Rally and was performing well so I figured I wold copy it. Let me know what you guys think? good or bad? im running at 4000ft.
Thanks!

 

[die hard poo]

That is a little much weight for your altitude. I would try removing the 3g and try 1g or none at the tip.

 

[inkstreme_05]

do you know what the purpose of the weights at the bushing and the tip do? like what will more or less weight at the bushing do and what more/less weight will do at the tip? like I stated im new with clutching and trying to learn I just copied a fellow sledders setup

 

[Bossman]

MTX weights

Adding weight near the bushing will lower the shift rpm in the lower part of the shift curve and adding weight to the tip will lower the rpm at higher speeds. Your total mass is pretty close, you are probably only one gram per shift weight off. Put a 3 gram rivet near the bushing and a 1 gram rivet near the tip. That will load the engine harder for better acceleration and most likely give you the 8200 rpm at higher speeds that you are looking for.

A word of caution: The MTX weights will not give you the performance you are paying for if your spider is not reshimmed to get the proper belt clearance. I assume that you have already done this, but if not, be sure and have it done. SLP says to run .020 belt to sheave clearance, but I have found that .025-.030 is needed to prevent belt squeal when the belt gets hot and expands slightly in width.

 

[inkstreme_05]

Adding weight near the bushing will lower the shift rpm in the lower part of the shift curve and adding weight to the tip will lower the rpm at higher speeds. Your total mass is pretty close, you are probably only one gram per shift weight off. Put a 3 gram rivet near the bushing and a 1 gram rivet near the tip. That will load the engine harder for better acceleration and most likely give you the 8200 rpm at higher speeds that you are looking for.

A word of caution: The MTX weights will not give you the performance you are paying for if your spider is not reshimmed to get the proper belt clearance. I assume that you have already done this, but if not, be sure and have it done. SLP says to run .020 belt to sheave clearance, but I have found that .025-.030 is needed to prevent belt squeal when the belt gets hot and expands slightly in width.

So the reason behind the weights that I did was to make it stand up and drag the bumper. so would the set up you suggested work better for that than what i currently have it as?

 

[Bossman]

MTX

It should help. Check your drive spring and make sure it is not broken also.

 

[max9string]

hey guys.
Im running 2012 SBA 144. In my primary it's a blue/pink slp primary spring and 68g slp Mtx weights, I put 2g on the inside(closest to bushing) and 3G on the outside of the weights.
My question is: is that too much weight? the sled seems to like it and at WOT right at the start it hits 8250 at most then comes back down and I stay no higher than 8150. would you say that is fine? im New to the whole playing with clutch stuff and got this set up from a guy I met at a Sled Rally and was performing well so I figured I wold copy it. Let me know what you guys think? good or bad? im running at 4000ft.
Thanks!

I called slp and I think you don't have enough weight, for my pro rmk assault I'm suppose to run 68 grams, if you put in MTX you should buy 71 gram MTX weight and add 1 - 2 gram in the outer hole don't worry about the mid hole unless you need to do final adjustment you should be running at 8100 - 8250, if you over rev a bit add 1 gram in the mid if you can't reach it swap the 2 gram for a 1 gram