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Post by pchyland on Jun 2, 2012 6:32:22 GMT -5
 What can be wrong when a new belt self destructs after only two short rides? Everything seemed normal, but at about 40 mph it just blew. Seemed very much like when the old belt with 7k miles went. Can there be some kind of misalignment? Only additional info is that I did have some trouble getting the variator removed to clean it when I did the belt replacement (search "stuck variator" for that post). Hope someone has an idea because I'm afraid to ride it and destroy another $50 belt.
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Post by rae4180 on Jun 2, 2012 7:07:08 GMT -5
maybe bad clutch new springs. make sure every thing is clean very clean .all the gears on the kick start .use a wire brush on the gears . and fine sand papper on the clutch pads and bell.
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Post by nulldevice on Jun 2, 2012 8:28:31 GMT -5
Think back to when you installed the new belt. Did you put the belt on and then just crank down on the variator nut? If you didn't make sure the belt was loose around the variator as you tightened the variator nut you may have pinched it and broken the cords.
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Post by pchyland on Jun 2, 2012 11:02:09 GMT -5
Forgot to mention this on a Lance Duke 250. No, I didn't scrounge the belt when installing it. It felt loose and moved freely. One other clue, I did see the splines inside the fixed (outside) part of the variator are stripped, but it seemed solid when I tightened the nut down. I always felt unsure whether the part was fully seated since it apparently wasn't on my first effort, before pulling the whole variator and cleaning it. Still need some ideas cause I have none about what tears up a belt. Now when I look around the inner case, there are areas that have things that look alot like knife blades. Are they actually a safety feature to chop up a belt the is starting to come apart? That is one suspicion since a bunched up belt would possibly cause some other damage. |
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Post by nulldevice on Jun 2, 2012 23:45:28 GMT -5
OK, you wiped out the spline of the outer face of the variator, you admit you didn't get the part fully seated on your first effort at changing the belt, and are always unsure if it is fully seated. My friend, those are the classic signs and symptoms of pinching the belt when you install it. If after you hand tighten the variator nut you are able to turn the nut more than 1/4 to 1/3 turn with a wrench to get it tight that is another indication of pinching the belt during installation.
There is a specific action you need to do as you install the belt to avoid pinching it. Tell me what that is and that you did it and I'll quit believing you pinched the belt when you installed it.
As for the pulley face with the wiped spline, you do really should replace it.
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Post by cpete1 on Jun 6, 2012 6:59:14 GMT -5
How many miles on the scooter? Both the vatiator and the clutch need occasional service. The clutch is the "driven" part. If that freezes up due to rust, dirt accumulated over time, the variator will be doing all the work and the belt will over-heat and literally disintegrate. At best you'll hear alittle noise just before it happens but its quick. I ended up buying a new clutch for my scoot because the old one was so rusted I couldn't dissasemble it. Utube has some videos about the clutch that might help. I went through 3 belts in 150 miles. Sounds like you might need some new parts but at least go thru and service both the clutch and the variator. Good luck on the fix.
Chrtis
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Post by pchyland on Jun 6, 2012 17:37:53 GMT -5
Thanks cpete1, those are some useful thoughts. I did try to remove the clutch, but the nut was on so tight I couldn't remove it with just a hand impact wrench and no housing tool. The clutch seems to be okay, but I'll go back and get it apart before deciding it's ready to go again.
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Post by max on Jun 6, 2012 18:04:37 GMT -5
It probably is due to the stripped splines on the fan face out unit not being set on properly. If the splines on the Aluminum outer face unit are worn the loose face may be causing the shredding of the belts. Mine was stripped down and spinning freely on the crank. Finally I noticed loss of power but stopped riding before more damage was done.
Max
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Post by cpete1 on Jun 7, 2012 7:46:52 GMT -5
You know anybody that has an electric impact wrench or maybe get one yourself ? Cause its kinda tough to undo those things without one. Let us know how you make out. I understand, Very much, the frustration of this. And do some reseach on utube, there are a couple clips there that will give you some insight on what you're dealing with.
Chris
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Post by pchyland on Jun 15, 2012 13:17:08 GMT -5
Update: Still have not been able to get the clutch apart. It does work and I've been riding the scooter in the local area with a bit of trepidation. One correction to notes above, the splines on the fixed part of the variator was only 1/2 stripped, so when I tighten the nut it is solid. Still not great, but I don't need to replace it (yet). Also, when revving the engine and watching the belt, it appears to operate/move properly. I still suspect the belt (which was the longer 916 vice the 908 on there now) may have jumped around and got caught up somehow. But this is still a mystery so far. One other thing that delayed this update was my battery discharging. Thought I had another bad regulator, but it was loose output connections.
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