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Old 07-22-13, 08:55 PM   #1
dannwilliams 
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Shop time

My bike has developed a knock or tap with every turn of the pedals. Taking into the shop tomorrow. I'm thinking it's the bb bearings, and if it is this will be the second one I wore out. FSA Mega EXO crank with the external bearings. I seem to get about 4 years, 12k, on them. Does that sound about right for it? My old Scwhinn Superior was 30 years old before I serviced the bb for the first time. That was a nice bike, sorry I sold it.
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Old 07-23-13, 03:35 PM   #2
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I stopped at the LBS on the way home from work. The wrench there said 3 - 4 years on the FSA is way better than the Shimano's. He sold me the cartridge BB and the tool (cost about the same as having them do it), and I was able to do it myself. So in another 3 - 4 years I'll be on the saving end. Nice! Time to ride...
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Old 07-23-13, 04:17 PM   #3
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So..if you've already purchased a replacement bearing set and the tool to swap out, maybe you should see if you can service the old bearings you pull off? I have this crankset on one of my bikes too, but have never taken it apart to service it, but on the sealed bearing cartridges you can usually pop the dust cover with an x-acto knife and access the bearings underneath. Just clean them out, pack a bunch of marine grease in there, and it's pretty much sealed as long as the grease is trying to get out and the dust cover is properly reinstalled. Of course, all bets are off if your bearings are now square...
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Old 07-23-13, 05:43 PM   #4
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I have a cartridge and your wrench is correct, a total breeze to clean and adjust, but the one on my single speed which Im pretty sure is also a JIS-FSA, always needs to be adjusted. It develops the dreaded knockity-knock about every two months. Im thinking its just because I am lazy and not threadlocking anything when I adjust it. You might want to do that right from the start? Im glad I can fix it, but like me, its just getting a little old.
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