Clutch Weight Recommendation

[skidooboy]

basic clutching theory tells you to tune rpms with primary. and to tune upshift and backshift with secondary. if you tune rpms with secondary you will be robbing peter to pay paul. you will have to sacrifice performance at one part of your shift for another if you tune this way.

if 16.5 is stock on the mtx, that is what i am running. i have an 08 mtx. ski

 

[ruffryder]

basic clutching theory tells you to tune rpms with primary. and to tune upshift and backshift with secondary. if you tune rpms with secondary you will be robbing peter to pay paul. you will have to sacrifice performance at one part of your shift for another if you tune this way.

if 16.5 is stock on the mtx, that is what i am running. i have an 08 mtx. ski

Very true, but that assumes that you secondary is setup perfectly in the first place.

I know that when I was playing with twist settings on my secondary spring, I noticed a difference of 200 in climbing rpm between settings. I didn't notice much of a difference in performance (only limited testing up the hill and back down again) and I would be curious how much of a difference there would be if I would have had the adjustable weights on there and got the rpm's using to be the same..

I guess what I am saying is that you are right, but that it might be possible to reduce (change would be a better word) you overall settings a couple of notches in order to get the weights into a position where you can better tune them without having them all empty... I am not sure if that made any sense.. I guess what I am saying is that there are multiple optimum clutch setups that can behave very similar while using different springs and weights. What matters most is the relationship between all the parts, not there specific numbers.... Then again, I am still learning this whole clutching thing...

It almost seems like the super tips and heavy hitters are on the heavy side for the sled... A set of 40's would be nice to better tune the system..... Just some thoughts anyways....

 

[Bodacious]

Ok in a hypathical optimum primary set-up with clutch weights for this Nytro Motor? Having a 3-hole configuration type flyweight. What do you think is the best weight distribution set-up. All holes equal in weight: outer and center holes carring more weight than the heel : or heel ang tip heavy with center lighter? I know this is a loaded question, but in my 30 plus years of attemping to tune I normally lean towards the center and tip being heavier. However this was normally done to straightline or trail applications, with higher engagement speeds being more desirable. What do ya think????????????????

 

[Rx1M5]

I'm running the 14.5 rollers. The main reason is the increased force they create on the belt in the primary. My Heavy Hitters are 48 gram base weight and are loaded to the max in the heel and then the rest of the weight is in the mid. Currently my tip is completely empty. My engagement is about 3300 maybe 3400 which I think is fine so I'm inclined to leave the weight in the heel. I'm going to pull some weight from the mid which will bring up the rpms for sure. If I put all the all weight in the tip it might push the belt up the primary further but it may not be able to hold the rpms. Its my understanding and belief that in cluthing the best setup will come from having the lightest of everything that still can produce the desired results, so light springs, weights etc. I haven't even looked at the helix yet but that is a factor as well. Lots of guys running the Shockwave but it seems once they set it they never change it so why not just get the right angle in the first place. Like somebody said before changing rpm with the secondary is not the way to go.



Rx1M5

 

[ruffryder]

I agree that the majority of the weight should be in the heel and the mid location. I have heard that having heavy tip weight can lead to poor backshift performance and inconsistent rpms when changing snow conditions (hard pack to powder). Though, I have not tested this theory..

I agree with what you guys are saying about adjusting my rpms with primary, again I completely agree. What I have found is that it is an iterative process. Adjust primary to correct shift and rpms. Adjust secondary for correct backshift / upshift performance. Then you need to go back and adjust the primary to make correct rpms again.

Maybe I am just playing a semantics game.... I don't know...

Rx1M5... how much weight in the heel and mid position? I know ours are different, but I am running 7 gram in the heel, 1 gram mid, and 1 gram in the tip... 16.5mm rollers.. I know that with your 14.5mm rollers, the amount of weight added to the weights will not need to be as much.

Should I assume that we have the same or similar weight profile? You are more then welcome to come to washington to compare.... and enjoy our crappy hardpack....

 

[Rx1M5]

OK here is what I have in my book but I made a few changes on the fly without writing them down so this might not be quite right Duh. Right now. 48 gram base weight, 3.3 grams in the heel, 2.6 mid nothing in the tip or something really close to that for a total of 54.3 at least that's what I have written down. I think I'll pull the clutch and weights and throw them on the gram scale.

I think a better idea would be to meet in Revy for a deep pow analysis, but thanks for the attractive invite. LOL.

Rx1M5

 

[NYTRO888]

as anyone tried the dalton quick adjust a arms i have these and not sure what weughts i should be running. looking for so input on this if any one can shed some light on this it would be geratly apperacited

 

[sonds]

call Tom Hartmann and go with his setup, It will cost you 350 bucks but well worth it, no tuning needed if you are running stock. His setup was right on in my sled.