Calling turbo 4 Stroke Clutching Gurus

[Turbo11T]

This is related to the cat m1100t. I know that you guys will have the best answers for me as you have been playing with 4 stroke boost the longest.


On the m1100t From the sounds of it the high flow cans are making 300-400rpm increase over stock. 8200vs7800. The sweet spot is 7700-7900 with the stock map over that power starts to drop off up to the rev limiter at 8300

The stock spring is a 122/285 you can get a 121/240. Would that be enough or to much to bring the rpm back down. The lighter finish should make it act like like heavier weights without the heavier weights and without the weights affecting engagement.

What you guys think?

 

[tmk50]

Does the sled lose rpms in deep snow? What is the max rpm you are seeing going down the trail vs climbing in some fresh powder? Any drop off?

 

[Sleds R Fun]

You may be trading off backshift going to a softer finish spring. Back shift is fairly important on heavier machines.

 

[Turbo11T]

Does the sled lose rpms in deep snow? What is the max rpm you are seeing going down the trail vs climbing in some fresh powder? Any drop off?

Honestly I do not know. We do not have snow here. I just put the can on. I am sure that It would be ok without it as in the powder it will not likely overrev. But thinking clutching could be better than stock since it is suppose to be more hp.

You may be trading off backshift going to a softer finish spring. Back shift is fairly important on heavier machines.

True but the yamaha turbo guys run fairly light springs. And secondly wouldn't heavier weights cause the same issue with backshift? I would think the trade off to squeeze the belt would be worth it? I obviously do not want to rethink the entire clutching. I have a set of supertips"x" here that I can get to 90grams on but I am not sure if the profile is good for what I want.

 

[Winter Nutz]

i keeped my heavy primary spring on my 09 nytro (stock spring) and put more weight at it each time i rode to find the sweet spot. and i run a shockwave multi angle helix. i run my secondary spring at 120 degrees. it is a purple spring. so if i were you i would just add weight yea and try it. once u get snow that is.