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Post by millsc on Nov 30, 2013 12:10:29 GMT -5
I got the highest top speed out of the hoca 18/46 gear set. The heat probably was because of a higher rated torque spring at higher speeds. A 2000 rpm rated torque spring at speeds over 50 tears up cvt components on 50s. The 16/50 gear set was only good for 51 GPS with a custom big valve head and 52mm big bore kit. I got nearly 60 with my airsal kit custom stock chambered big valve head 24mm carb hoca set and all the extras
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Post by alleyoop on Nov 30, 2013 13:03:37 GMT -5
Right on Millsc , lot of folks do not realize putting in a high rated contra spring puts a lot of strain on the belt and variator and creates a lot of heat.
Alleyoop
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Post by larry001964 on Nov 30, 2013 17:17:33 GMT -5
Millsc I can believe speeds above 50 tear up the CVT.. I did buy a Hoca trans kit, but I never used the yellow contra spring, only the shieve, bell, clutch shoes ( kept the original springs), variator, 3x 8.0 and 3x 8.5 gram dr pully sliders, Gates Power link belt, 17/49 gears.. So pretty much it was stock except the gearing, and heaver duty componet's..
I know i was getting speeds of at least 60 mph... time and distance calculations confirm that at the time
But there were times driving from Cutler to Delphi where i wondered if i wasn't going just a little faster than 60 ( this was after i doubled the ramp plate contact area in the variator ).. But I have no conformation on how fast.. I'm thinking regardless of your setup, the rpm's being turned at 50 + mph cause excessive heat causing guide key breakdown and eventually ramp plate to damage the variator..
My CVT was cut open above the clutch bell and variator, but it worked best when i had that fan attached to the variator....
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Post by millsc on Nov 30, 2013 17:26:43 GMT -5
I got 58 GPS on my black galaxy with the 18/46 set on a flat smooth road the 16/50 set I only got a little over 50 on my tap out scoot. Never any cvt issues but I never held those speeds for long if I did I probably would of had the same troubles.
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Post by Mainely Scooters on Nov 30, 2013 18:10:19 GMT -5
Torque is basically pressure. Force per radial displacement. Strokers produce more torque by design. Most variators both performance and stock were not designed for the additional torque of a stroker crankshaft. RPM has nothing to do with it in this case.
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Post by larry001964 on Nov 30, 2013 20:40:19 GMT -5
I got 58 GPS on my black galaxy with the 18/46 set on a flat smooth road the 16/50 set I only got a little over 50 on my tap out scoot. Never any cvt issues but I never held those speeds for long if I did I probably would of had the same troubles. Yea most of my driving back then was in 20 to 40 mile shots. So there were times I held those speeds for some time.. My max rpm was about 7500 and my power curve kicked in about 3500 to 4000.. The Koso lasted about three months, most variators if i took it easy lasted about two months... What made it a workable design was enlarging the contact area on the ramp plate, and going back to the original variator as it was made of steel and not aluminum... Now Fawkes is setup for around town driving, and hill climbing.. But I want to try it again with some more improvements.. And I'm thinking of using a 2 stroke variator with a custom made boss. If i can find one the right size. |
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Post by larry001964 on Nov 30, 2013 20:46:18 GMT -5
Torque is basically pressure. Force per radial displacement. Strokers produce more torque by design. Most variators both performance and stock were not designed for the additional torque of a stroker crankshaft. RPM has nothing to do with it in this case. I was thinking the higher stresses combined with the rpms produced more heat.. |
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Post by scooter on Oct 3, 2014 2:15:18 GMT -5
Another member mentioned that Koso Variators were a good deal, cheap for the price. Take this as you will. Its not a dump on Koso. They are extremely cheap and we sell them (in store) for $18. We sell the Dr. Pulley for $129 installed and Malossi for up to $250. You get what you pay for. Greg Back in June I bought a no-name brand belt and a variator set on ebay from best-bike www.ebay.com/usr/best_bike   and in just a few miles, the belt broke. I put my old belt back on. I chalked up the broken belt to my buying the longer one, the 842. I thought maybe it had jumped the pulley. Later I found the boss was cracked and my old boss would not fit inside the bushing on the new variator. I put my old boss and variator on and kept going. (At this point I am back to square one) I started thinking this dealer must sell reject parts. I wanted to try a 115mm variator so in July I bought the "Sport Performance Racing Variator for 125 150 Scooter KOSO 115mm" variator on ebay from mopedfactory www.ebay.com/usr/mopedfactory The first thing I noticed was that it was "geared" differently from my other ones. I had to drastically drop my weights to bring my rpms back up. I went from 13 down to 8 gram rollers that I bought on ebay from scooter-atv parts www.ebay.com/usr/scooter-atvparts , and it was still running low rpms. (I sent off for some variator width adjustment shims, later, but never had a chance to try them out.) After a few weeks, I saw flat spots on some of my rollers. Being a noob, I decided it would be okay for then and I'd check them again later. About two weeks ago, I was zipping along at about 60 mph on the Chinometer and the gates belt blew out. When I opened the cvt up, the belt was all mulch and strings and three of the rollers were worn down through the plastic and into the brass. Also the KOSO variator was very loose on the boss. I put my original variator and rollers back on the scooter and put on another cheap Chinese belt that I bought on ebay from imotorpartsusa www.ebay.com/usr/imotorpartsusa I took it around the block and back and it already had strings hanging off of it. Being a noob, I didn't know if that was normal or not, but I figured, since everything was closed in town, that the next day I'd hobble to work and pick up a good belt on the way home. I didn't make it 5 miles at 45 mph before the belt shredded. I waited for the scooter shop to open and got a new gates belt. So far so good and no strings. I'm not knocking ebay. I have bought a lot of good, cheap, stuff there including switches and a cdi and coil and plug, a windshield, a clutch that seems to be working fine, and some tools, as well as lots of other stuff, unrelated to scooters. I just bought a new "stock" variator from the scooter shop. I paid more, but if something goes wrong at least I can take it back without shipping and dealing with ebay and feedback and all, and look the seller in the eye, person to person. Tomorrow I'll try it out. I probably should have waited until the weekend, when I won't be on my way to work again, but I really want to try out the new variator and I'm a glutton for punishment. |
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Post by tvnacman on Oct 3, 2014 8:31:38 GMT -5
what have you learned ?
John
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Post by alleyoop on Oct 3, 2014 12:18:48 GMT -5
I can tell you the KOSO variator I have has just about 6k now and not one single problem. As a matter of fact I bought TWO from TVNACMAN and I have a brand new one still in the package hanging. I don't know why but I always seem to buy TWO of everything(HAHA). I have two Advancing CDI's from TVNACMAN as well and there again a new one is still in the package hanging.
Alleyoop
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Post by katastroff on Oct 4, 2014 7:48:25 GMT -5
I was going to get a KOSO variator for real cheap on aliexpress but now im hesitating.
Any advice on them DLH variators?
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Post by tvnacman on Oct 4, 2014 10:13:19 GMT -5
what have you learned ? John ah maybe the belts are the problem |
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Post by beenriding on Aug 14, 2015 9:38:20 GMT -5
Another member mentioned that Koso Variators were a good deal, cheap for the price. Take this as you will. Its not a dump on Koso. They are extremely cheap and we sell them (in store) for $18. We sell the Dr. Pulley for $129 installed and Malossi for up to $250. You get what you pay for. Greg Back in June I bought a no-name brand belt and a variator set on ebay from best-bike www.ebay.com/usr/best_bike and in just a few miles, the belt broke. I put my old belt back on. I chalked up the broken belt to my buying the longer one, the 842. I thought maybe it had jumped the pulley. Later I found the boss was cracked and my old boss would not fit inside the bushing on the new variator. I put my old boss and variator on and kept going. (At this point I am back to square one) I started thinking this dealer must sell reject parts. I wanted to try a 115mm variator so in July I bought the "Sport Performance Racing Variator for 125 150 Scooter KOSO 115mm" variator on ebay from mopedfactory www.ebay.com/usr/mopedfactoryThe first thing I noticed was that it was "geared" differently from my other ones. I had to drastically drop my weights to bring my rpms back up. I went from 13 down to 8 gram rollers that I bought on ebay from scooter-atv parts www.ebay.com/usr/scooter-atvparts , and it was still running low rpms. (I sent off for some variator width adjustment shims, later, but never had a chance to try them out.) After a few weeks, I saw flat spots on some of my rollers. Being a noob, I decided it would be okay for then and I'd check them again later. About two weeks ago, I was zipping along at about 60 mph on the Chinometer and the gates belt blew out. When I opened the cvt up, the belt was all mulch and strings and three of the rollers were worn down through the plastic and into the brass. Also the KOSO variator was very loose on the boss. I put my original variator and rollers back on the scooter and put on another cheap Chinese belt that I bought on ebay from imotorpartsusa www.ebay.com/usr/imotorpartsusaI took it around the block and back and it already had strings hanging off of it. Being a noob, I didn't know if that was normal or not, but I figured, since everything was closed in town, that the next day I'd hobble to work and pick up a good belt on the way home. I didn't make it 5 miles at 45 mph before the belt shredded. I waited for the scooter shop to open and got a new gates belt. So far so good and no strings. I'm not knocking ebay. I have bought a lot of good, cheap, stuff there including switches and a cdi and coil and plug, a windshield, a clutch that seems to be working fine, and some tools, as well as lots of other stuff, unrelated to scooters. I just bought a new "stock" variator from the scooter shop. I paid more, but if something goes wrong at least I can take it back without shipping and dealing with ebay and feedback and all, and look the seller in the eye, person to person. Tomorrow I'll try it out. I probably should have waited until the weekend, when I won't be on my way to work again, but I really want to try out the new variator and I'm a glutton for punishment. This should be read more often! |
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Post by scooter on Aug 14, 2015 16:12:12 GMT -5
Agreed. I wish I had read it before I bought those lousy belts.  |
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..BAD TO THE BONE..
