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Dust problem in primary sliding sheave in Hunterwork's greaseless setup.

This is a discussion on Dust problem in primary sliding sheave in Hunterwork's greaseless setup. within the X2/X4 CVT, Sheaves & Wet Clutch forums, part of the Yamaha Wolverine X2 & X4 847cc SxS category; Originally Posted by Ghost23 I don't seem to have any issues with the hunterworks sheave and weights in my X2. But all this back and ...

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Thread: Dust problem in primary sliding sheave in Hunterwork's greaseless setup.

  1. #21
    Lead Super Moderator MassiveOverkill's Avatar
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    Quote Originally Posted by Ghost23 View Post
    I don't seem to have any issues with the hunterworks sheave and weights in my X2. But all this back and forth with hw and jbs has me wondering which is better. I just watched James recent videos on YouTube about hw issues and jbs ratio.

    If I just keep the hw blown out, is it going to last? Or is a greased system better? What is the ratio of a hw sheave? Jbs says his is 17.5% better than stock.
    You know there's a whole thread dedicated to actual UNBIASED DYNO TESTING between the two sheaves?

    James is calling poo-poo on the Gen 1 cam plate towers not having an issue. There are plenty of people who have experienced this in their STOCK SHEAVES.

    We have members here who have tried both and can tell you Hunterworks performed better. Wherry is no fan of me and he'll even admit his HW setup performs better. Alex has tried both and says his Hunterworks performed better. Michael has tried both and his Hunterworks performed better.

    As far as milling: The JBS OD weights are so much taller that James HAS to mill more on the low end to make up for it. As a matter of fact, JBS NEEDS to use a 1.2 mm shim to make up for the low end you lose from using OD weights. JBS performs WORSE than stock down low. Remember, the concept of OD weights was to get you more high end without having to machine your sheave.

    I don't know, do you consider 10,500 miles long enough for you?

    The argument is now moot. You can use the HW sheave with whatever ROUND rollers you want and use grease in your sheave.

    Here's my suggestion:

    Try Hunterworks greaseless and install the blowout port. If you're one of the minority that have high dust accumulation and you need to blow out very often, then go back to grease. Otherwise simply blow out the primary with the blow out port, which literally takes 5 minutes.

    Consider how long it takes to service the primary with grease, including removing all the plastic (on an X4), etc. You're talking at least a 2 hour job from start to finish. Now 5 minutes into 2 hours is 24 times you could have blown out your primary via greaseless. If you're supposed to service your sheaves every 1600 miles you would have to blow out your primary every 66 miles to equal the time it takes to service your primary sheave with grease. Let's not forget the numerous reports of those who've accidentally overgreased their primary or those who's day has been ruined when their greased system got swamped.

    Let me break this down further:

    Time you can go between blowing out your primary

    A 66 miles = same amount of time you'd spend changing out grease in your primary
    B 125 miles = half the time you'd spend changing out grease in your primary
    C 250 miles = 1\4 the time you'd spend changing out grease in your primary
    D 500 miles = 1\8 the time you'd spend changing out grease in your primary

    I'm between C and D.
    Last edited by MassiveOverkill; 08-02-2020 at 07:26 PM.
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  2. #22
    Sunday Driver
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    My belt was starting to chirp fairly often. I would blow it out and then get one ride before it needed another blow out.
    Last weekend we were going on a three day trip and didn't want any issues so before we left I took the primary apart and cleaned everything thoroughly and added some dry lube.
    Everything worked fine the first day but the chirp came back half way through day 2.

    When I got back home and pulled the primary off it was full of black dust.
    1 - We haven't had dust here because of all the rain we have been getting - rained the whole first day
    2 - I led the group the whole first day and third day
    3 - If we ever do get dust its definitely not black
    Putting a screen on the CVT intake isn't going to prevent this

    Blowing this dust out while I'm riding or even every day is just not an acceptable solution for me.
    We are going on another 3 day ride this weekend.

    I just put grease back in mine.
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  3. #23
    Evil Kenevil DILLIGAF's Avatar
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    Quote Originally Posted by TimBo View Post
    Putting a screen on the CVT intake isn't going to prevent this
    .
    You came to that conclusion from testing ? Or just speculating without proof ?

    My pre-filter is being installed today and I will actually test this theory before just saying it wont work without proof.

    That same crap will be in your grease by the way.
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  5. #24
    Experienced InfidelMT's Avatar
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    I've seen what dust does inside my CVT. No way will I be running grease. The way I have my blow out port setup takes a whole minute. If your secondary hasn't been serviced in 1600 miles it needs to be done as well.
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  6. #25
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    Quote Originally Posted by DILLIGAF View Post
    That same crap will be in your grease by the way.
    Agreed!
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  7. #26
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    Quote Originally Posted by TimBo View Post
    My belt was starting to chirp fairly often. I would blow it out and then get one ride before it needed another blow out.
    Last weekend we were going on a three day trip and didn't want any issues so before we left I took the primary apart and cleaned everything thoroughly and added some dry lube.
    Everything worked fine the first day but the chirp came back half way through day 2.

    When I got back home and pulled the primary off it was full of black dust.
    1 - We haven't had dust here because of all the rain we have been getting - rained the whole first day
    2 - I led the group the whole first day and third day
    3 - If we ever do get dust its definitely not black
    Putting a screen on the CVT intake isn't going to prevent this

    Blowing this dust out while I'm riding or even every day is just not an acceptable solution for me.
    We are going on another 3 day ride this weekend.

    I just put grease back in mine.
    This question has been on my mind for a while. I ride in AK and dusty trails aren’t very common. I ended up with a belt bark issue last summer and went through the normal process of troubleshooting. Numerous tear downs and sheave cleanings over several months. During the process, I reached out to Massive and others but no one had a solution that worked. I was running greaseless with the HW sheave. After cleaning out the gray/black dust, things would be fine for about 50-100 miles but the bark would show back up. Note that most of my riding is slow (avg 7mph) so I was seldom opening things up to blow out accumulated dust. Once hunting season and winter came around I was riding in mud and snow (zero trail dust) and the bark would still materialize. I ended up sending my weights back to UTVengineering so he could inspect them. He said that my weights were worn and smaller than spec. He wasn’t sure why but suspected either environmental dust was causing the sheave to stick or the wear was from variation in the sheave channels. He noted that the sheaves are made in China and that there is some variability. Since I was riding exclusively in wet or frozen conditions, I knew it wasn’t trail dust. Nonetheless UTVengineering sent me new weights and within 100 miles the bark was back. At that point, and with recommendations from others, I went back to grease. I have had no bark since then and have put over 800 miles on it.

    My point is that I think roller weight wear could also be adding dust that effects the sheaves performance. If this is true, a CVT filter will not stop the bark but it may extend the time between blowouts.

    Although it is definitely an issue, I don’t think trail dust is the only culprit. If it was then belt bark issues wouldn’t develop in the fall/winter in Alaska when trail dust is nonexistent. I am fairly certain that AKHUNTER’s belt bark showed up in winter/spring (no trail dust) too. His was resolved with grease as well. I get why people dislike grease (me too!) but in some cases it might be the most practical alternative.

    I am going to do my secondary service soon and will inspect the primary, roller weight wear, and replace the grease (since I will be in there already). I am curious about the condition of my roller weights and any measureable wear. I will post what I find.


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  8. #27
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    I very recently serviced my primary and installed The blow out port. The belt bark came back within two weeks and ~100 miles. I blew it out five times before this weekend’s WV trip. It rained there each day so no dust. Belt barking at almost every stop. I’m not sure what I’ll do. I’m going back in to do the secondary now that I have the new type spring cup. I’ll have parts on hand for the primary after discussion with Todd. The performance is great, just the annoying belt bark at take off under no load.
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  9. #28
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    From everything that I've read, I think the HW sheave has all the performance numbers that I like.
    I think the dust issue is coming from the weights wearing myself, just conclusion from members post.
    Belt bark, not going to deal with it. I would get the HW sheave, OEM weights that you want, run grease and be done with it.
    2,522 miles on original components and no issues. I'm just waiting on freaking parts to arrive for service....UGH!
    mvarner likes this.
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    Adapt your machine to how you intend to use it.
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    Decide what you want and what you can live with or without.

  10. #29
    Evil Kenevil DILLIGAF's Avatar
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    If that was the case Id have no more weights by now...lol...
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  11. #30
    Silver Bullet SKELLEY521's Avatar
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    Not ever case, but there are many as per the postings of Black Dust build up.
    The sheave seems good and I don't see it making black dust, now the weights are a strong possibility and would lead to a logical conclusion.
    2019 WOLVERINE X2 R-SPEC SE / Tactical Black
    Adapt your machine to how you intend to use it.
    Every mod you do to a machine will have gains somewhere and losses in other areas.
    Decide what you want and what you can live with or without.

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