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Conversion question...(7 posts)

Conversion question...SenorPedro
Sep 17, 2003 4:15 PM
So I have a question about converting my 126mm spaced road bike. I have no problem with putting 3mm of spacers on the axle of a 120mm track hub, or even just tightening the sucker down without spacers.

What is bugging me is that it seems like the chainline will be a pretty big issue, and I plan on using a flip flop - so a biased dish wouldn't work. In your experience, is the chainline of a track hub compatible with say, the inner chainring position on standard road cranks? Will I have to add some spacers to move it even more inboard? It doesn't seem like a 42t ring will move inward too much without running into the chainstay. I am trying to keep on a "reasonable" budget with this bike, I know Phil makes a 126 hub, but it is too spendy for me.

I have another similar steel frame that I am running 8 speed with with a 130mm hub in a 126mm frame with no problems. I recently saw Van Dessel has a whole rear wheel with cog and lockring for $84, and it is spaced at 130mm. Would this give me a nicer chainline? Does their stuff just suck because it is so cheap?

Thanks for your input,


(My bike is the blue Trek a few posts down)
re: Conversion question...PaulNYC
Sep 17, 2003 6:54 PM
The van dessel hub is fine, although I do not know about the wheel. Check Out sheldon Brown's chainline article to figure out your issues.
In my experience..Dave Hickey
Sep 18, 2003 3:55 AM
Using Shimano double cranks, 126 rear spacing, and 120mm track hub, the inner chainring works great. I put 3mm spacers on each side of the hub and use the inner chainring. The chainline is almost perfect.
I did the same thing w/ an old......bungalowbill
Sep 18, 2003 8:07 AM
80's era Schwinn and the chain line was spot on with the 42 in the inner position on the original Suguino cranks. Asfor cheap wheels, I don't know about Van Dessel's stuff, but I got one for about the same price from Spicer Cycles. It has a flip/flop "Quando" hub that I've been very happy with. If you take care to put in good bearings the cheap hubs aren't too bad. Just make sure you use a quality cog that has plenty of threads!
Definition of quality cog?SenorPedro
Sep 18, 2003 8:31 AM
I have a 16t Dura-ace and a 15 E.A.I. - Good stuff? I thought it was, but I am inexperienced.
What I meant by that was....bungalowbill
Sep 18, 2003 9:01 AM
most quality cogs (like the ones you have) have a thick base with at least 5 or six turns of threading in them. Lots of threads mean a better load dispersal on the hub, so good cogs will be much less likely to strip the soft aluminum threads on the hub.
I mentioned that because the main gripe I've heard about the cheaper hubs is from people who have stripped the hub threads with a cheapo cog.
Hope that makes sense.
Clear as a bell - thanks (nm)SenorPedro
Sep 18, 2003 10:45 AM