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Post by Tolik on Jun 20, 2011 21:40:38 GMT -5
Pulled the scooter out of the garage today started up and noticed that its not moving when applying throttle. Turned it off and tried to push it but its stuck. Seems like the rear tire is just locked. I barely managed to push it back into the garage and took the car instead =( What the hell happened, i was out the day before for about 20 mile ride and everything seemed fine.  |
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Post by D-cat on Jun 21, 2011 6:32:26 GMT -5
It might be the brake, it might not. When's the last time you changed the gear oil?
I'm assuming here that you have a drum brake on the back. Try loosening the brake screw all the way and wiggling the tire a little. If it doesn't free up, take the belt cover off try working the clutch bell. Worst case take a wrench to the clutch nut as if you were going to remove it; drum brakes are weak enough that you should be able to override it relatively easily from the clutch bell, and you should be able to get a feel for the drag. If there's a small but spring like return, it could still be the brake (broken spring?), you'll need to take the rear wheel off to check. Else try changing the gear oil, maybe a slight flush with WD40.
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Post by Tolik on Jun 21, 2011 7:46:30 GMT -5
It's pretty much new, got about 60 miles on it. I changed the oil's before the first ride. Should I be changing the gear oil again? Upon inspecting the brake screw I noticed it is already loose and has some wiggle to it. I loosened it a bit more and at least now I'm able to turn the wheel slitly but it's still very tight. I havn't had a chance to try anything else yet. Any and all suggestions would be appreciated. I'm going to attempt to fix this today after work.  |
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Post by D-cat on Jun 21, 2011 11:35:03 GMT -5
If loosening the screw did make a difference but didn't outright fix it, then I'd still take the rear wheel off and see if I can see why. There could be a broken spring or a brake pad issue or some other foreign object jammed up in there.
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Post by Tolik on Jun 23, 2011 9:43:51 GMT -5
I think I fixed it, for now at least. I loosed the rear nut all the way and it seemed like springs was not pushing the release stick, or whatever it’s called, back into position. I had to tap it with a screwdriver a few times and it loosened up and sprung back into position. Although when I would apply the brake all the way it would lock up again. I lifted up the rubber pad number three (in picture) and sprayed some WD-40 it seemed like the whole mechanism was stiff. I also wiggled the springs and re-positioned them. I then tightened the nut back. Here are the issues. Spring number one (in picture) seems to have a kink in it so I may need to replace it. Can I just buy this in HomeDepot, I saw they sell springs. Also the design seems crappy it’s just a bare spring pushing there is no washer or anything is that normal? Spring number two (in picture) is the one that’s doing all the pushing? Can I get a tighter spring so it has more force to push back, or would that make it difficult to brake? Thank you. Attachments:
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Post by D-cat on Jun 23, 2011 12:30:21 GMT -5
If it's getting stuck after applying brake I'd suggest that your pads might be worn too far.
Here's a visual; have 3 2x4s bungee corded together. When you twist the middle board a little, it pries the other two apart, then let go and the bungees slam the boards back together. But, if you twist to the point of horizontal, the bungees can't close the boards together any more. How manual drum brakes work on scooters is pretty similar; that lever is like the middle 2x4. If the pads are worn enough that you can pull the lever close to 90o, the internal springs will not be able to drive the lever back and may even help keep it stuck in place.
A stronger spring on the outside MIGHT help temporarily, but the root cause needs to be solved. I haven't had good luck with hardware store springs in other scooter applications though.
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Post by mechaniczman on Jun 23, 2011 14:22:01 GMT -5
the spring you think has a kink in it is just twisted mine get twisted if i dont hold the 8mm nut on the cable.
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Post by lhumpolick on Jun 23, 2011 21:54:59 GMT -5
Pull the brake shaft cam that's the part the cable assembly connects to it`mine had a burr on it and caused a accdent when it locked up it kept the brake lever sticking i end up removing it with a dreminal tool
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Post by Tolik on Jun 26, 2011 18:03:10 GMT -5
Drove around for about 30 miles today. Brake seems good after i "fixed" it.
I'm just hoping that the problem doesn't arise again.
Thank you for all your suggestions and comments.
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