Clutching on the cheap

[yamamarc]

That's a good problem to have! Add some weight, each gram should drop the rpm about 200 rpm. Also if you are set 6-1 on the secondary try 3-3, will drop rpm a bit and give a little less mid range and more top.

Hey stingray my wrap is at 3-3 You think I should add weight to the next hole lower from tip? I'm guessing that I would need weights about 6 to 6.5 grams in tip the way I'm wacking the limiter it's hitting hard even with 4.5 grams. (not sure where I could find that size maybe led ones maybe or stainless steel bolts with stover washers???)

I'm not complaining I know it's making hp the sled pulls hard on launch just need to keep it off limiter. Having a hard time keeping skis on the snow...lol
think gates belt will drop rpm a bit?

thanks
Marc

 

[stingray719]

Hey stingray my wrap is at 3-3 You think I should add weight to the next hole lower from tip? I'm guessing that I would need weights about 6 to 6.5 grams in tip the way I'm wacking the limiter it's hitting hard even with 4.5 grams. (not sure where I could find that size maybe led ones maybe or stainless steel bolts with stover washers???)

I'm not complaining I know it's making hp the sled pulls hard on launch just need to keep it off limiter. Having a hard time keeping skis on the snow...lol
think gates belt will drop rpm a bit?

thanks
Marc

MPI has brass rivets that are about 7 grams, but I would add to center hole first as that is easier to get rivets for.

 

[yamamarc]

MPI has brass rivets that are about 7 grams, but I would add to center hole first as that is easier to get rivets for.

hey thanks for the fast reply adding to the center hole is it still about -200 rpm per gram

 

[yamamarc]

anyone know where I could find the yanaha part #'s for different weighted rivet for 8pf weights I'm searching but not having any luck??
I want the part numbers before heading to dealer

 

[shagman]

Go to ty tech and look in clutching. There is a chart with part numbers.


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[bleedyamaha]

8fp weights came from the apex sleds so have them pull up Apex clutching.

 

[yamamarc]

Okay I think I may have found the issue??? I was looking at the clutch rivets and the ones I put in were suppose to be 4.5 grams but upon looking at pics the 4.5 gram weights aren't aluminum and are steel rivets( gold color)! The ones I put in are solid (no hole threw) and look to be aluminum but maked 4.5 on packaging from pioneer! Am I right??? Are the 4.5 gram rivet a goldish color? I tried to weigh them before installing the but my kitchen scale wouldn't read weight correctly! I just bought 3.1 g for center hole they are steel (gold color) but if I have the wrong ones in tip I will replace them! I haven't pulled the clutch apart again yet but will shortly

 

[NOS-PRO]

Yes, the 4.5 are gold color and long with no hole.

Probably have the 2.5 aluminum in

 

[VX1R]

yamamarc.....this chart should help you to identify the rivets that you're working with. If you can't accurately weigh them you can measure the length of the rivet to find out what you have.

 

[yamamarc]

Yes, the 4.5 are gold color and long with no hole.

Probably have the 2.5 aluminum in

thank you thank you thank you!!!!!!!!! now I know I' ve been running with wrong weights!! If anyone else is hitting limiter make sure you have the proper weights (gold color rivets)!!! The original ones that I put in with cotc ordered from Pioneer were aluminum with a hole threw them and I ordered what was supposed to be 4.5grams (solid) in case I needed more weight but were the wrong ones I guess !
Thanks Nos pro!!! You wouldn't have the correct part # for 4.5 grams( I can go back and check but if you have it on hand it would be great)

 

[yamamarc]

yamamarc.....this chart should help you to identify the rivets that you're working with. If you can't accurately weigh them you can measure the length of the rivet to find out what you have.
View attachment 116187

thanks that's the chart that I looked at and figured out Pionner sent me the wrong weights!! I'm going to order proper ones from Yamaha
thanks for posting the chart I found it earlier but couldn't remember where!!!lol

 

[NOS-PRO]

thank you thank you thank you!!!!!!!!! now I know I' ve been running with wrong weights!! If anyone else is hitting limiter make sure you have the proper weights (gold color rivets)!!! The original ones that I put in with cotc ordered from Pioneer were aluminum with a hole threw them and I ordered what was supposed to be 4.5grams (solid) in case I needed more weight but were the wrong ones I guess !
Thanks Nos pro!!! You wouldn't have the correct part # for 4.5 grams( I can go back and check but if you have it on hand it would be great)

Anytime bud!

 

[yamamarc]

My local Yamaha has the 4.5 gram weights in stock part # 90261-06033-00 I'll pick then up and try it out tomorrow morning!!

 

[yamamarc]

anyone know what the weight of a unloaded 8fp weight?

 

[Alsim]

anyone know what the weight of a unloaded 8fp weight?

67.8 g