Hello, I have a 150cc Chinese scooter that is snapping drive belts like twigs. I recently replaced my starter clutch and shortly after it snapped the original belt with about 2200 miles on it. Since then I have snapped 4 more including 2 Kevlar belts. The last belt that broke, I had replaced my worn roller weights but was missing two of the slide keys. Would the missing slide keys cause the belt to over heat and break, or possibly something got out of alignment when I replaced the starter clutch? I have new keys and a new belt on the way but just wanted an opinion before I lose $40 in 10 miles.
Here is a reverse MO! question answer. This time it was MO! calling out to all those scootdawgs out there who might know why so many belts are broken on certain scooters. This was a reply from someone who kept breaking belt after belt, and seemed to try everything, then after he changed the rear clutch/pulley assembly, he wrote back this reply below. It seems that the inner bearing would pit and run rough, causing excessive heat, and transfering heat to the belt through the rear sheaves of the pulley. Heat and rubber don't do well together for long!
MO! It (rear clutch/pulley) was causing all the heat (a bad needle bearing in the clutch), and I have about 500 miles on my scooter since replacing the clutch with the one I purchased on your site, and it's running great, so you my want to advise people to pull the clutch as part of their normal maintenance routine (every 1,500 – 2,000 miles should suffice), and feel if the bearing has any rough spots in it; this can easily be done by inserting your index finger into the bearing and spinning the clutch on your finger, and if the bearing does not roll freely, or you can feel any rough spots in it, it’s probably getting close to time to change the bearing (if you can find one), or the clutch, because you can warn them if they don’t, they’ll probably be pushing their scooter home from wherever they are when the heat from the bad bearing, melts the belt. -helpful scootdawg no longer changing belts all the time!"
Clutches may 'appear' to be fine, but the bearing could be bad...
It is probably heat related... pop the 'filter' at the front of the CVT and run it without it for a few days and see if the heat does away. After a few hours ride you should be able to hold your can comfortably on the CVT... anything hotter and you have restricted cooling of a bad bearing...
Post by als01seville on Oct 19, 2010 16:55:20 GMT -5
Well from what he said I think it is his Variator that is binding. He even said one or two of the V sliders were damaged and that would cause binding of the Variator. Also I would put on either Bando Brand or Gates Powerlink belts they stretch a little. Alleyoop
I have new slides now but am still waiting for the belt. I was hopping that it is just the missing sliders before I destroy another belt and while I have the cover off. I do appreciate the quick responses. I have had 2 Kevlar belts but the one on order is a gates.
Post by buiditright on Oct 19, 2010 18:08:58 GMT -5
I had the identical per your quote problem with my scooter.. belts including kevlar snapping like twigs. I checked the clutch it appeared to be fine.. I replaced the torque drive and clutch complete and have not had a belt break since. That has been thousands of miles at least 4000. I sold the scooter and told the guy who bought it to keep an eye on it and he just keeps on riding... Also when I replaced the torqure drive I replaced the varator with a quality prodogy because when the torque drive went up it tore up the varator..
Scooters Galore UM XSPEED 50R/SF50 Tecnigas Exhaust 75 main jet NGK Iridium plug Bando performance coil DrPulley 6Gr Sliders Manco Phoenix/ motofino 72cc BBK Large Valve Head Walbro Carb/95 Main Jet Performance no limit CDI Bando Performance Coil Complete Trans Upgrade W/Kevlar Belt NGK Iridium Plug Dr Pulley 7Gr Sliders Performance MRP Exhaust Emigo Performance Breather
their s not a lot of reasons for belt problem worn slider worn or used variator bent axel (variator or clutch) bad belt size worn bearing (clutch) too hard contra spring seized clutch pulley worn clutch pulley (each side don t move parallel (one is worn or broken)
wereed: HOw can I start a thread?
Jun 1, 2013 10:55:49 GMT -5
wereed: or respond to a thread I started three years ago...
Jun 1, 2013 10:56:07 GMT -5
marklorenzi: I just bought one of the Fleetwoods. They look like a clone of the Honda XRM's they sell overseas. It is in transit now and I should get it this week. I will try to post my experience here. Call me the guinea pig hahaha.
Jun 2, 2013 20:29:11 GMT -5
flyangler: wereed, this forum is read only the new forum is on the banner above. Dan
Jun 5, 2013 7:35:29 GMT -5
silkyg1973: can someone please tell me how to post
Jun 10, 2013 12:08:46 GMT -5