hub bearing question
02-23-06, 07:49 PM
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how do i know if my front hub needs to be greased, im buying a road bike, and from who im buying it greased it 2 months ago. He's a bike mechanic and all but i just want to know what are the signs of the bearings needing grease
02-23-06, 08:31 PM
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Remove the wheel from the bike, and rotate the front axle by hand. It should turn smoothly, with no feeling of grit or roughness, and no play. If it feels rough, is hard to turn, or has a lot of slop, it'll need to be rebuilt.
02-23-06, 08:32 PM
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Well, if a mechanic overhauled the hub two months ago, you're probably okay. And since the seller is a mechanic and he's your friend, you could ask him about what to look for in order to tell if a hub needs to be overhauled again. (Not intending to be curt; I just don't have time to reply right now.)
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02-23-06, 08:42 PM
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if the bearings are bad, is it possible that it will lock up while riding?
02-23-06, 08:46 PM
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Originally Posted by russiankdi
if the bearings are bad, is it possible that it will lock up while riding?
02-23-06, 08:57 PM
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Originally Posted by timcupery
(a little more time now) No, virtually zero chance that the bearings will lock up. They will just turn with more friction. A wheel has such a large diameter, the bearings would have to be nearly welded shut for the wheel to stop turning while you're riding.
02-23-06, 09:53 PM
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Did you go over the bars because your hub bearings locked up? I find that hard to believe. Not impossible, but highly unlikely. But I can understand why you're cautious here.
02-23-06, 09:55 PM
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Originally Posted by timcupery
Did you go over the bars because your hub bearings locked up? I find that hard to believe. Not impossible, but highly unlikely. But I can understand why you're cautious here.
02-23-06, 10:19 PM
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Back wheel failure (rim, spokes or hub) is much more likely because it carries much more weight than the front and also has to carry the driving load from the chain.
02-23-06, 10:57 PM
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Originally Posted by AndrewP
Back wheel failure (rim, spokes or hub) is much more likely because it carries much more weight than the front and also has to carry the driving load from the chain.
