New wheels won't fit on old bike
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New wheels won't fit on old bike
Postby __PG__ » Wed Nov 14, 2012 10:51 pm
I'm not too fussed, as the wheels are for my new frame, however I was planning on riding the wheels for a while until the frame is ready.
The front wheel is fine.
The rear wheel won't fit in the rear drop-outs. The spacing is fine (130 mm) but the end sections of the hub is slightly too thick to fit inside the drop-outs.
The new wheels have Alchemy hubs. The current wheels have Shimano Ultegra 600 hubs.
Was there a new 'standard' change in rear hub/axle sizing that I wasn't aware of?
Here is a picture of the drop-out.
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Re: New wheels won't fit on old bike
Postby Nobody » Wed Nov 14, 2012 11:02 pm
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Re: New wheels won't fit on old bike
Postby drubie » Thu Nov 15, 2012 2:55 am
+1 - file the dropout until the axle slides in there. It won't be much (1mm max) and nobody will know if you do it carefully.Nobody wrote:Time to start filing the old frame then...
Forks (especially rubbish stamped dropout forks rather than forged dropouts) are the worst for some reason. Good frames seem to fit everything, the worse the frame, the tighter the fit. Not sure how that works exactly.
but really, that's rubbish. We get none of it because the choices are illusory.
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Re: New wheels won't fit on old bike
Postby rkelsen » Thu Nov 15, 2012 9:09 am
I thought rear axles were a standard size? It sounds odd, anyway.
Drubie, some old racers had smaller front axles. Usually the K-mart specials. And even with those I'd file the axles to fit rather than vice-versa.
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Re: New wheels won't fit on old bike
Postby ironhanglider » Sat Nov 17, 2012 10:49 pm
I presume that you have confirmed that it is the axle size that is different by measurement. I'd also prefer filing a flat spot on the axle (and always installing the flat uppermost) to filing the dropout. The one I could see in the photo looked pretty parallel anyway.
A slightly left field possibility. Is the smallest cog on your cassette bigger than the previous one? The reason that I ask is that adjustable dropouts had pretty much died out by the 90's which was when cassette hubs and 130mm spacing became common. If it was not designed for cassette hubs it is possible that the smallest cog is interfering with the tail end of the chainstay and just making life awkward. My tandem frame is a 126mm which I spring out to 130mm, but I discovered that I have to have an 11T smallest cog because the 12T interfered too much.
Cheers,
Cameron
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Re: New wheels won't fit on old bike
Postby __PG__ » Sat Nov 17, 2012 11:18 pm
I took it into Cecil Walker and they suggested that it was most likely a bit of corrosion on the drop out. They suggested a 'very gentle' filing to smooth it over. That drive-side drop out has had a bit of rust on it.
I'll also double-check the hub axle diameters.
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Re: New wheels won't fit on old bike
Postby il padrone » Sat Nov 17, 2012 11:26 pm
Just a thought.
"An unjustified and unethical imposition on a healthy activity."
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Re: New wheels won't fit on old bike
Postby __PG__ » Sun Nov 18, 2012 7:46 am
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Re: New wheels won't fit on old bike
Postby master6 » Sun Nov 18, 2012 8:42 am
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Re: New wheels won't fit on old bike
Postby Dan » Sun Nov 18, 2012 10:08 am
I suspect the marginal difference in diameter from switching to a 13T outer sprocket is the problem - the teeth are most likely pressing slightly against the seat stay? If so, try the old 12-25 cassette again.__PG__ wrote:Interesting. The cassette on the new wheel is a 13-26. My current cassette is a 12-25. I'll check to see if that is the issue, because the non-drive side dropout seems to be fine. It's jamming on the drive side.
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Re: New wheels won't fit on old bike
Postby master6 » Sun Nov 18, 2012 11:11 am
I note comments about small cog size.master6 wrote:Have you tested fitment of the axle in the dropout by locating the wheel outside the chainstays; ie rear wheel either side of the frame.?
Simple test:-
Will the wheel fit if no cassette is on the hub?
I use a 10 speed in an older steel frame, and yes, the teeth on the small cog foul the chainstay during wheel fitment. Simple solution is to unscrew the spindle adjustment a cuople of turns, and spread the frame a couple of mm while sliding the wheel in.
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Re: New wheels won't fit on old bike
Postby __PG__ » Sun Nov 18, 2012 1:11 pm
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Re: New wheels won't fit on old bike
Postby __PG__ » Tue Nov 20, 2012 11:50 am
Have ridden the new wheels a few times and it has come loose a few times. I think I'll stick with my existing skewer (Shimano 600 Ultegra) for the old frame, and leave the KCNC skewer for the new frame with its vertical dropout.
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Re: New wheels won't fit on old bike
Postby familyguy » Tue Nov 20, 2012 12:33 pm
Good idea. They don't work 100% on longer dropouts. Makers sell them cause they look cool and are a touch lighter.__PG__ wrote:Anyone want to talk about open-cam skewers in sloping drop-outs?
Have ridden the new wheels a few times and it has come loose a few times. I think I'll stick with my existing skewer (Shimano 600 Ultegra) for the old frame, and leave the KCNC skewer for the new frame with its vertical dropout.
The open-design skewers on my Miche wheels were passable on long dropouts, but you really had to crank them shut. Same as these:
I now use older Ultegra hubs with these skewers. They're not stupidly tight, and they've never budged:
Jim
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Re: New wheels won't fit on old bike
Postby rkelsen » Tue Nov 20, 2012 1:53 pm
What this man said.familyguy wrote:They don't work 100% on longer dropouts.
Open cam skewers don't clamp or grip as well as old-school steel closed cam units. This is especially noticeable when you use them with forged horizontal/sloping dropouts.
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Re: New wheels won't fit on old bike
Postby Nobody » Tue Nov 20, 2012 1:58 pm
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Re: New wheels won't fit on old bike
Postby __PG__ » Wed Nov 21, 2012 12:15 pm
New wheels are nice too. I have lost about half a kilogram of weight for the set, and the rear seems a bit stiffer too when out of the saddle.
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