Gentle Folk,
Jim Young asked:
> <<Does anyone know what size of cartridge bearings are required to fit the
> mavic 610 RD bottom bracket?>>
>
I went on a quest several years ago seeking the same bearings. I visited
three (not trusting the first, and not giving up hope after the second) bearing
supply houses, and none were able to match the bearings. Further research
led to my discovering that Mavic had used a proprietary size for the bearings
(SKS) and these had not been manufactured for quite a few years.
Further research with various "old time" bike parts companies took me to Sellwood Cycle Supply in Portland, OR. The owner had "stashed" away eight sets of these bearings and I was able to convince him to sell me one-half of his inventory. They were not inexpensive......
I still have two sets, but I also have two bottom brackets which need to be overhauled. Chuck Schmidt pointed out that you can still use a standard bottom bracket, and I would think that this would be the least expensive way for you to proceed.
All the best,
Chuck Brooks
Malta, NY (28" of snow yesterday!!)
USA