8DN belt and sheave grooves at 800 miles

[unchained]

They do that & it is normal with the 8dn belt. I have very deep groves at 500 miles but that is after a lot of 1000' test runs. Been happening since 8dn belt came out on 98 srx,s.

What are saying then? Just feather them in a little, scuff the sheaves wth 80 grit--clean and then start running the Ultimax 3 and move on?

 

[cameljockey]

ive never had a sled that had deep or even shallow grooving on the primary. i only have 240 miles on my sled but this will be unacceptable if it happens and ive owned alot of sleds in my day.

 

[Metallicat]

My 2008 Vector has gooves in the primary as well. This is after 500 miles.

I noticed the sled "chugging" a little bit at very low speeds, like when you're just barely creeping forward with it. It felt like clutch slip at the time, and I think it is in the engagement area where the damage occured.

 

[AKrider]

I noticed mine had grooves as well. Stock belt, 500+ miles, the grooves are located down low on the sheaves.

 

[Metallicat]

Yeah, same here...I am beginning to wonder about these ultra-hard compound belts. Yes, they may last 5000 miles but if they destroy your clutch at the same time there is no net benefit to their longevity.

I noticed mine had grooves as well. Stock belt, 500+ miles, the grooves are located down low on the sheaves.

 

[Kråkan]

Metallicat, the chugging at very low speeds can be because there is a whaist in the belt. Take it of and take a look. My uncle had a BIG one on his venture and damn that thing just cept jumping around HAHA.. But that was an EXTREEME!! So check it..

 

[snowmaniac]

I too have 2 grooves down low in the primary sheeve. Factory belt and 402 miles on the machine. Dealer told me this is normal for yamahas??? This is my first Yamaha so I have no experience with other Yamahas but none of my other sleds from another brand have ever had this happen.

 

[jimmyhighway]

I also have sheave grooves down low on the primary at 600 miles. (08 Nytro)

 

[unchained]

I too have 2 grooves down low in the primary sheeve. Factory belt and 402 miles on the machine. Dealer told me this is normal for yamahas??? This is my first Yamaha so I have no experience with other Yamahas but none of my other sleds from another brand have ever had this happen.

It is sort of "normal" but not with only a few hundred miles IMO....

 

[SledFreak]

My Apex has grooves in it with 2400 mile on it. It's a product of the 8DN. It won't hurt a thing. Go riding and don't look back.

 

[unchained]

My Apex has grooves in it with 2400 mile on it. It's a product of the 8DN. It won't hurt a thing. Go riding and don't look back.

Not bad advice. Yami does need to use some of their world class aluminum casting technology and revise the YVXR (clutch-whatever it is) formula though.....

 

[unpride]

I have those damn grooves too! Will this hurt perfomance?

 

[unchained]

I have those damn grooves too! Will this hurt perfomance?

How often do we ride with the belt that low in the sheaves anyhow really??