I installed a Shimano Ultegra 10 speed cassette with what seemed to be a very thin Shimano spacer on a used 2006 Mavic Kysrium SL SCC rear wheel.
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Freehub -- very thin spacer - cassette
Did some asking, searching. Read the oh-so-informative Mavic wheel manual for 2008's and saw that I needed a spacer. http://www.mavic.com/medias/tips/pdf...user-guide.pdf
Went to my LBS. got Mavic branded Part M40417 1.75mm spacer for $2.99. Just for kicks I compared it with other Mavic rims they had on display (Cosmic's and Ksyrium Elites, not my particular rim) and it was the same width.
Came home and put it on.
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Freehub - 1.75mm Mavic spacer - thin shimano spacer - cassette.
It felt like it would be tighter. Nope. Still wiggled. Probably the same as before. But I can't bring myself to think that the spacer didn't do anything.
Rim supposedly has 400 miles. No gouges in freehub. Looks pristine. My cassette has about 1,000 miles and looks pristine where it mates with the freehub. There's a very tiny amount of play between the ribs of the freehub and my sprockets which I guess is probably normal.
Any thoughts? Do I need a thicker spacer? Is my freehub loose? Bearings loose? It still looks like the sprockets are moving on the freehub body leading me to believe the spacers are too thin still.