Clinician
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Post by dhull on Jun 27, 2015 8:46:28 GMT -6
Halfway to work this week, Big Red rounded a corner and lost power to the wheel. I thought I had broken the belt but upon taking off the CVT cover, I found that everything looked good there, so it was on to the other side of the bike.
Muffler off, brake caliper off, swingarm off, axle nut off, tire deflated and wheel assembly pulled from the axle shaft. Inside the wheel hub was not a pretty site. The splines are worn down pretty smooth, so it needs to be replaced. The problem is that this wheel assembly is only about a year old. When I replaced it, there was a bit of side-to-side wobble, so I packed it with grease, slid it on and used a couple of washers for spacers to try to tighten the nut up and take out the wobble.
Apparently the splines in the wheel and the axle shaft weren't tight enough of a fit and it allowed some play, which eventually wore out the wheel splines completely. The axle shaft splines look pretty good, so I don't think it needs to be replaced.
The question is: How do I find the right wheel assembly to match my axle shaft properly so I'm not going through this again next year? Are there that many variations in the spline specs?
Would I be better off buying a new axle shaft and wheel that match? If so, how hard is it to remove the axle shaft from this point? I've done some searching but haven't found any good instructions so far. If it's not too hard, I think it might be worth it to pull the shaft so I can physically see if it matches the wheel splines.
Big Red is a Roketa MC-54-250b clone and the tag on the frame reads Cyprus 250. He has 16,600 miles on him and isn't done yet, so please help me keep him on the road.
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Post by Alleyoop on Jun 27, 2015 11:04:17 GMT -6
Jim From RapidRepair I believe can get you the right rim for it apparently the 54B and 54 are different so you have to make sure which one you have. Alleyoop
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Clinician
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Post by dhull on Jun 27, 2015 12:19:08 GMT -6
Thanks for the advice. Is there any sure-fire way of telling which bike I have?
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Post by Alleyoop on Jun 27, 2015 13:25:41 GMT -6
I do not know but PM JR I believe he has one of each. Alleyoop
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Post by cyborg on Jun 27, 2015 22:03:08 GMT -6
I would take your own advice and get a matched set axel and wheel,,,keep the original axel as an emergency spare
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Senior Clinician
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11,000 Miles and Counting...
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Post by bhinch on Jun 29, 2015 14:46:03 GMT -6
The wheel is determined by which engine you have. I think the 244cc has one style and the 257cc has another style. I replaced my rear wheel almost 4 years ago and I lucked out to get one off Ebay. The 257cc uses the 260 scooter rear wheel. Most of the time the rear wheel nut comes loose and the wheel moves side to side. This removes the inner splines for the axle and ruins the wheel. I always check the rear axle nut every time I think about it.
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Post by cyborg on Jun 29, 2015 22:05:34 GMT -6
If this is an issue with these bikes it should be jam nutted or drill the axel and cotter pin it
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Clinician
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Post by dhull on Jun 30, 2015 7:05:45 GMT -6
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