Question about 1972 Ossa E-71

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Help! I'm rebuilding a pair of OSSA MAR wheels and dont know what measurement is required between the hub face and the rim in order for the wheels to be true and aligned when reinstalled on the bike!

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Did they not have spacers when you took them offf the bike?

Posted on Mar 05, 2009


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knowing the type of vehicle would be nice
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Bike rim change 26x1.95 to 27x1.25 on Mountain bicycle

If you're saying you want to keep your old hubs and install roadie-sized rims so you can use road-friendly and efficient tires you're looking at an expensive and wasteful project. The hubs would be the only parts that are potentially re-usable. I seriously doubt the rims you have right now are 1.95" wide. I have several mountain bikes and many wheelsets and not a single one that I can't put anything from 26x2.25 to 26x1.10" tires on. At 100-plus psi the little tires are hard as rocks and roll nice.

If you DON'T have disc the whole project is a non-starter becuase you can't arbitrarily change wheel sizes on a rim-brake-equipped bike. Disc brakes would require you to have disc-specific hubs so search the web for "700c disc wheelset" that match your disc size (if you have disc).

If you want to DIY you'll need some special tools and skills.

Then you'll have to select rims and find an online spoke length calculator so you can order the precise lengths you'll need, assuming you have data for your rims and your hubs.

Look online or eBay, too.

A Bike Shop might be willing to lace on new rims and spokes to your hubs but it will be expensive and you would be destroying presumably fucntional MTB wheels. By the time it's all ordered and installed it would probably have been cheaper and more reliable to have just purchased new wheels.

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