Thread: QM200GY RearHub
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#1 QM200GY RearHub12-15-2008, 05:08 PMhello friends!
I would like to install a RearHub with a system that would reduce the impact on the gears and back wheel, it would be possible?
It would have some value?
Sundown 200cc STX motard
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12-15-2008, 05:37 PM
LC,
What problem are you having with the bike?
I'm not very clear on your meaning. The QingQi (Sundown) already has a "cush" drive. This means there are rubber blocks between the hub and rear drive sprocket (gear) which "softens" the transfer of power from the chain to the wheel assembly.
Correction: The QingQi does NOT have a "cush drive"
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12-15-2008, 07:59 PM
I was mistaken in thinking the QingQI had a "cush" drive because it obviously does not now that I look at pictures.
I think Forchetto and ChinaV discussed this already. I know they were trying to find better quality bolts and don't think they solved the problem but maybe they can give an update. They also mentioned something about being sure your spokes stay tight or the bolts will break.
Try this link:
http://www.mychinamoto.com/forums/showthread.php?t=511
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#5 Qingqi QM200GY-BA cush drive?
- Join Date
- Jun 2008
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- Gijon, Asturias, Northern Spain
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12-15-2008, 08:06 PMThere's no cush drive. I haven't looked closely but there's nothing in the parts book:
This business of breaking spokes and shearing sprocket bolts is getting to be a "popular" problem with this bike. Theres another thread here about it:
http://www.mychinamoto.com/forums/sh...sprocket+bolts
I wonder if the maker knows about this, as it may require a recall service notice. It can be a dangerous thing and the importers will be liable for damages.
I can't see what is wrong. The entire assembly looks good and strong, the bolts are the correct tensile strengh rating and the spokes and wheel rim looks sturdy enough. I have been observing my spokes and so far they've required re-tightening a couple of times.
In the bicycle world it's well known that sprocket bolt failures follow the loosening of spokes, or so I've been told, so maybe the only problem is poor quality spokes.
People in other forums speak of having changed them. They also say it only happens if they're ridden in the rough.Jincheng Monkey JC50Q-7
Skyteam Dax replica ST110-6
Zongshen ZS125-43
Qingqi QM200GY-BA Super Motard
Qingqi QM110GY
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12-15-2008, 08:26 PM
My guess is it's just cheap metal as usual. I'd be interested to see if better quality bolts would solve the problem....
I think I've found a better bolt....take a look here...
http://www.mychinamoto.com/forums/sh...=4121#post4121
Multispeed bicycles that use cassettes (which I think most do) don't use these kinds of bolts to fasten them to the hub but slide on to the hub in grooves more like clutch plates. I know the Shimanos work like this and believe the Campys do to. What kind of bicycle uses these kinds of bolts for their rear sprocket?
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12-15-2008, 08:52 PMThanks friends!
I noticed that the 125cc bikes Kasinski adopt the same gear shift and did not break so easily.
A Cush drive that I could avoid problems in the gear box.Sundown 200cc STX motard
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12-16-2008, 09:32 AMSorry. My fault for asking around bicycling-types. I pointed this out to them and they said that although they don't have sprockets held with bolts, the principle still applies to the tabs or splines that connect the sprockets to the hub: If the spokes loosen or break, the chain stresses these splines and end up damaging them. This is due to the chain not pulling straight or something.
I have never owned or ridden a bicycle we were very poor when I was young...in our house we thought knives and forks were jewellery...for Christmas I was given an empty box and was told it was an Action Man deserter...
I still don't really like bicycles, although I recognise how efficient they are. Just consider: On the energy from one 2 oz Scotch egg, a man can travel for miles, at the speed of a leaping panther, with the elegance and grace of a 2-ton Walrus.Jincheng Monkey JC50Q-7
Skyteam Dax replica ST110-6
Zongshen ZS125-43
Qingqi QM200GY-BA Super Motard
Qingqi QM110GY
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