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Post by geh3333 on Jun 27, 2014 19:56:27 GMT -5
I ran a 2000 main spring in my ncy clutch assembled for about 3 yrs and at the end of last yr I blew out my v sliders in the variator . . I ordered 3 more sets this yr and a new 2000 main spring . I quickly blew out a new set of v's . Next I replaced the 2000 main with a stock , I still blew out another set quickly . So next thought was my ncy clutch bearings are bad so I replaced it with a stock clutch pulley , I used my 1500 rpm clutch springs and my ncy clutch pads with a stock main spring . Problem seemed to be solved , so I installed the new 2000 ncy main spring and i blew out the v's again in about 60 miles . I'm pretty sure the ncy clutch bearings are bad but why is my 2000 main blowing the v's out ? They are made to run in the cvt . Could the new. 2000 main be to strong from factory ?
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Post by alleyoop on Jun 27, 2014 20:23:28 GMT -5
What do you mean blowing out the V sliders, they break melted or what. The only thing I can think of is on the metal guides at a certain point the metal is sharp as a knife and cutting them. So it would depend where that point is on the metal guides and the speed that you are probably riding at all the time. So I would check the Variator Metal V Guides and see if you see any part of them with sharp edges that the V rides on and then round them off. I don't believe the plastic guides are breaking due to anything to do with the clutch or springs at all. It is the way the Variator Guides slide up and down on the Variators metal guides.
Alleyoop
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Post by geh3333 on Jun 27, 2014 21:39:56 GMT -5
Here is a pic .  . They all bust on the same side . All three at the same time . If u look at the variator while it's on the scoot and picture where the plastic slides are " I'v always called them v slides " . The right side of the slides break . As the tension builds on the belt that's the side that would have most pressure on it . I've tried 2 Koso variators and 2 of my stock variators and it busts on all of them . The only time I've got it to stop was with the stock clutch pulley and the stock main spring . But this to me isn't a fix it's because it should be fine with the 2000 main . Im kinda stumped . |
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Post by alleyoop on Jun 27, 2014 21:51:31 GMT -5
Could also be the sharp edge on the Variator itself that the V guides fits in a lot of them I noticed are pretty damn sharp and would not take the pressure on that side.
There are different thickness plastic slides as well some fit loose some fit nice and tight.
All I can think of at the moment
Alleyoop
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Post by geh3333 on Jun 27, 2014 22:10:55 GMT -5
Thanks alley I know what u mean , I've busted the red ones that came with the koso's and the stock black ones also , some where a little wider than others . I've even switched the metal slide that slides on the boss . Even some of those were a little thicker where the plastic guides went on . And the all still busted . In all I've went through 5 sets " the three I bought , the red ones that came with the Koso and a set of stock black ones I had with my extra parts" . Also when this happens I end up destroying my variator due to metal on metal contact . This is starting to get expensive ! " I've ruined 2 stock variators and 2 koso's . I had the stock ones as extra parts , now I'm out of variators . I'm sure I can file down the meatal guides on the variators where the metal on metal contact has caused divots . But I really need to find the problem .
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Post by geh3333 on Jun 27, 2014 22:36:13 GMT -5
Posted that I replaced the part of the variator that slides on the boss , lol " the main variator pully slides no the boss , I meant the part on he back of he variator that stays in place that holds the weights in .
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Post by onewheeldrive on Jun 27, 2014 23:51:00 GMT -5
Those v-guides are annoying. They're all good one minute, and then the next time you pop off the variator they're cracked or half gone, possibly with damage to the variator. It's to the point to where I'm afraid to even ride more than 2-3 weeks between checkups for those things.
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Post by geh3333 on Jun 27, 2014 23:52:01 GMT -5
I have a new theory of why this is happening . I'm thinking he clutch pads may be low and it's not engaging fully until the rpms are much higher then They should be , and when it finally grabs the tension is strong enough to cause the problem . I'll have to get some more v slide guides and try one of my stock set of clutch pads .
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Post by geh3333 on Jun 27, 2014 23:55:16 GMT -5
Those v-guides are annoying. They're all good one minute, and then the next time you pop off the variator they're cracked or half gone, possibly with damage to the variator. It's to the point to where I'm afraid to even ride more than 2-3 weeks between checkups for those things. So u sometimes have this problem , imagine ever 30 to 60 miles and they all are split , lol . Hopefully I'll figure it out . |
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Post by onewheeldrive on Jun 28, 2014 0:00:07 GMT -5
Those v-guides are annoying. They're all good one minute, and then the next time you pop off the variator they're cracked or half gone, possibly with damage to the variator. It's to the point to where I'm afraid to even ride more than 2-3 weeks between checkups for those things. So u sometimes have this problem , imagine ever 30 to 60 miles and they all are split , lol . Hopefully I'll figure it out . That'd drive me nuts!!! I do have a few spare, and that reminds me I need to order more. The ones that I have now didn't fit that good on my last variator(on the older engine). |
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Post by rexxk on Jun 28, 2014 1:35:38 GMT -5
once the sliders break once, and you didnt catch it before they ate through, to metal to metal contact. thasts right. replace the variator. thats what you gotta do. ive done it a bunch. just dont use overtight belts and.. chinese scooters. thats my advice.
oh yea, and change them sliders out every time you change the roller weights. or 2-3000 miles or something. im not sure.
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Post by geh3333 on Jun 28, 2014 6:39:59 GMT -5
I threw in a few broken plastic slides. I noticed my clutch dosent fully engage till 4000 rpms . It begins to engage a little over 3000 but u can feel it fully at 4000 rpms . I'm using 1500 rpm springs so that is a little high . I'm gonna have to order a new variator and slides before I can really test my theory .
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Post by alleyoop on Jun 28, 2014 13:03:54 GMT -5
HAHAHAHA, clutch doesn't fully engage until 4000 rpms, I can see why they bust  Your a hotrod on that thing and running high rpms most of the time full out. Alleyoop |
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Post by rexxk on Jun 28, 2014 14:38:07 GMT -5
i broke a set of sliders on a koso variator the ones that came with it, in under 100 miles. using 2000rpm springs. just cheap koso sliders was all they where. i use polinis, or heck, stock chinese ones, off scooterdomain. cause? where else do you get them?
once the seal breaks, you dont ever use it again. the drive pulleys seal so the thing can variate, is the sliders on teh front. the rear, ahs 2 o-rings inbetween the driven pulley and the torque converter thing that goes over top of it. when those shoot out, the things are pretty much shot. the rear with the o-rings. might be able to be resealed, cuase itll go out and go out quick and take other stuff with it. as long as it dont hang up. but your variator will hang up anD HANG UP.
thats why the slides are breaking. new ones wont stop it. and new springs wont stop that from happenning either. if it did then noone with big bore kits and big motors would ever be able to use this CVT type of transmission. and if your belts too tight itll also break the driven pulley.
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Post by geh3333 on Jun 28, 2014 16:53:01 GMT -5
i broke a set of sliders on a koso variator the ones that came with it, in under 100 miles. using 2000rpm springs. just cheap koso sliders was all they where. i use polinis, or heck, stock chinese ones, off scooterdomain. cause? where else do you get them? once the seal breaks, you dont ever use it again. the drive pulleys seal so the thing can variate, is the sliders on teh front. the rear, ahs 2 o-rings inbetween the driven pulley and the torque converter thing that goes over top of it. when those shoot out, the things are pretty much shot. the rear with the o-rings. might be able to be resealed, cuase itll go out and go out quick and take other stuff with it. as long as it dont hang up. but your variator will hang up anD HANG UP. thats why the slides are breaking. new ones wont stop it. and new springs wont stop that from happenning either. if it did then noone with big bore kits and big motors would ever be able to use this CVT type of transmission. and if your belts too tight itll also break the driven pulley. Drive pulley seal ? No clue what your talkin about . |
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..BAD TO THE BONE..
