|
Post by aeroxbud on Jul 25, 2021 17:23:00 GMT -5
The clutch only has to open enough to grip the bell. At about 1mm the belt is worn. it will effect top speed. Did you fit new rollers when you tried the new belt? If you put a straight edge down the variator face, does it have a groove worn in it?
|
|
|
Post by steve1297 on Jul 26, 2021 7:54:55 GMT -5
Alright, new belt was definitely wider than the old by a bit, not a ton. No improvement to speed though. Is there a good way to determine whether my clutch is opening up fully? Also, the size of pilot jet I'm using shouldn't make a difference to top speed, correct? Correct.
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Jul 27, 2021 19:15:25 GMT -5
No groove. No new rollers. Just ordered some. Stay tuned.
|
|
|
Post by GrumpyUnk on Jul 28, 2021 10:01:39 GMT -5
Hate my ISP. Wrote a long missive. Clicked POST. GOne.
short version. some us magic marker on the face of the variator to verify belt travel to the outer diameter. Do that. if it does not go to the edge, check rollers/belt/etc, as it is not maxing its ratio. tom
Oh. Draw a wide line from the center out towards the rim. the belt will clean off where it touches, leaving untouched past its end-of-travel spot.
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Jul 29, 2021 15:15:22 GMT -5
Okay today I put some 6g rollers in. These should be either spot on for the stock rollers or slightly heavier. Also made sure the variator face was smooth. Took about 30 seconds of run time for a new ring to build up right where the old one was.
I'm starting to think this is a rear pulley issue. It would appear that the variator is having no issue squeezing the belt, but something's simultaneously fighting it, i.e. the clutch. I also feel as though the clutch is more difficult to open by hand than it should be. The action isn't very smooth and it takes all my strength to open (granted I'm not that strong). In addition, when I pulled it open as far as it would go, I pulled the belt tight but it didn't seem to quite touch the [whatever the cylindrical piece that the clutch/pulley slide onto is called].
How can I tell whether the clutch/pulley need replacing/repairing?
|
|
|
Post by scooter7878 on Jul 29, 2021 18:32:59 GMT -5
If it's a stock spring under clutch it should move smoothly with some tension but smoothly the higher the spring rated it will be pretty hard but smoothly. The easiest way is to remove bell slide the pulley off and remove big but the clutch has tension so hold clutch down as u remove nut. Take clutch and spring off and slide the pulley half's should be smooth if u small screwdriver and pop the spring seat up u will see 3 pins pull them out and clean everything if the pins or slots where pins ride are loose or damaged replace as necessary but grease with hi temp I use Lucas red and tacky fill the slots with grease and reassemble
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Jul 31, 2021 18:28:21 GMT -5
Just to be clear, if the clutch itself has something wrong with it - i.e., its "arms" are failing to open up - that wouldn't explain why my belt isn't opening up fully on my variator, correct? I should be more concerned with diagnosing possible problems with the rear pulley itself?
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Jul 31, 2021 18:45:33 GMT -5
Also, my pulley action seems pretty smooth (tested with spring was removed), however, even the inside of old belt, which is worn down on the sides, doesn't touch the [cylindrical piece inside the pulley that the disc slides on]. There's about half an inch of gap. I'm sure that gap is reduced somewhat when the bike is running and the variator pulley is pulling on the belt, but I'm still not sure if that gap is supposed to exist at all. If not, I'm sure it would explain my issues, however I'm not sure how it could be the problem since the pulley can't spread out any further than it is already.
|
|
|
Post by scooter7878 on Jul 31, 2021 19:51:52 GMT -5
Also, my pulley action seems pretty smooth (tested with spring was removed), however, even the inside of old belt, which is worn down on the sides, doesn't touch the [cylindrical piece inside the pulley that the disc slides on]. There's about half an inch of gap. I'm sure that gap is reduced somewhat when the bike is running and the variator pulley is pulling on the belt, but I'm still not sure if that gap is supposed to exist at all. If not, I'm sure it would explain my issues, however I'm not sure how it could be the problem since the pulley can't spread out any further than it is already. . A new belt has to stretch out. I'm assuming what ur saying is the belt doesn't ride all the way up in the rear pulley? So a new belt will sit lower for a bit until it stretched. Clean and grease the rear pulley anyways
|
|
|
Post by scooter7878 on Jul 31, 2021 19:56:01 GMT -5
Idk if anyone has told u to do this yet but get the bike on the high stand and do whatever is involved in being able to run it on stand with cover off. In a 139qmb u have to start it with cover in than while running pop off cover but use a socket with extension to hold the starter Bendix in place. Rut to almost wot and watch the belt travel if there is a issue in cvt u will most likely see it if it rides all way up and down the issues are probably not in cvt
|
|
|
Post by scooter7878 on Jul 31, 2021 20:02:52 GMT -5
Can u post a video with sound if u driving it so I can hear what it does
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Aug 1, 2021 12:51:04 GMT -5
No, what I'm saying is the opposite. When I try and get the belt to sit all the way down INSIDE the rear pulley, it leaves about an inch of clearance. This may be the case under normal conditions, I just don't know. Just seemed suspicious.
The problem has always been that the belt doesn't ride all the way up and down. Hold on, I'll go get a video right now.
|
|
|
Post by viaqua on Aug 1, 2021 13:11:43 GMT -5
Have you removed the clutch and checked to be sure all 3 springs are there and the internal workings are ok?
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Aug 1, 2021 13:13:40 GMT -5
|
|
vacationer
Scoot Enthusiast
On Vacation
Posts: 239
|
Post by vacationer on Aug 1, 2021 13:16:34 GMT -5
viaqua I removed it, yes, and as far as I can tell, everything is in working order. All springs are there and all three arms pull up and down in what appears to be standard fashion. Would a problem with the clutch springs be a possible cause for belt not not riding up fully on the variator? Just seems like the two are unrelated but I'm very open to being wrong.
|
|