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Bottom Bracket replacement issues

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Bottom Bracket replacement issues

Old 06-22-10, 03:12 PM
  #1  
milosavitch
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Bottom Bracket replacement issues

Hi all, first an apology for all the forum etiquette rules i am no doubt about to infringe upon

Here is my question, I have a shabby halfords bike which i was bought new for xmas a year ago and is now dissolving around me, the main frame is sound, i think, but everything else sucks, anyways, i'm straying from my point, what i want to know is, is it as easy as a noob like myself feels it should be, to exchange the bottom bracket it came with, with a sealed unit one, as its now needing its 3rd old fashioned one. so yeah, do i just buy one thats the right size, do you need a special one, or am i being dumb and it's not possible? thanks in advance for your help

milo
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Old 06-22-10, 03:25 PM
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cnnrmccloskey
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Originally Posted by milosavitch View Post
Hi all, first an apology for all the forum etiquette rules i am no doubt about to infringe upon

Here is my question, I have a shabby halfords bike which i was bought new for xmas a year ago and is now dissolving around me, the main frame is sound, i think, but everything else sucks, anyways, i'm straying from my point, what i want to know is, is it as easy as a noob like myself feels it should be, to exchange the bottom bracket it came with, with a sealed unit one, as its now needing its 3rd old fashioned one. so yeah, do i just buy one thats the right size, do you need a special one, or am i being dumb and it's not possible? thanks in advance for your help

milo
yes it is possible, measure your bottom bracket spindel and get one with the same length spindle
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Old 06-22-10, 04:13 PM
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ivan_yulaev
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How come you're eating through conventional BBs like that? Are you sure you're assembling/adjusting them correctly? The adjustable bb in my g/f's bike has lasted over 4 years of consistent use, although it's needed a bit more attention (adjustment once or twice) versus a sealed setup.
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Old 06-22-10, 05:24 PM
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milosavitch
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like i say, newbie, the first one seemed to disentergrate very quickly after getting wet, where as the second one, to be honest, never was right, always had a bit of play which has got worse, i havent really been focusing on it much, but am now ready to buy the right tools etc. thanks for advice
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Old 06-22-10, 05:43 PM
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you need to measure the BB shell width as well, should be 68 or 73mm
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Old 06-22-10, 08:44 PM
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Originally Posted by ivan_yulaev View Post
How come you're eating through conventional BBs like that? Are you sure you're assembling/adjusting them correctly? The adjustable bb in my g/f's bike has lasted over 4 years of consistent use, although it's needed a bit more attention (adjustment once or twice) versus a sealed setup.
If its not an adjustment issue it could be a possible facing issue as well. Adjustable old style bb's aren't very tolerant of that **** the way modern square taper shimano carts are.
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Old 06-22-10, 09:14 PM
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Yeah, something else is going on to make you need to replace them: some combination of riding in cruddy conditions, installation problems, adjustment problems. I have a bike I've had for 30 years, with the original loose-ball unsealed bottom bracket.

Yes, if there's a cartridge BB that fits your bike, then that might help you.

What sort of bike is this? Where do you ride it? If it's a BMX bike, and you're riding in sand and rain and doing tricks and skidding the cranks along cement ledges or something, then you're going to be destroying all sorts of stuff all the time. If it's a more gently used bike, then that's different.
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Old 06-22-10, 10:09 PM
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Originally Posted by mcgreivey View Post
Yeah, something else is going on to make you need to replace them: some combination of riding in cruddy conditions, installation problems, adjustment problems. I have a bike I've had for 30 years, with the original loose-ball unsealed bottom bracket.

Yes, if there's a cartridge BB that fits your bike, then that might help you.

What sort of bike is this? Where do you ride it? If it's a BMX bike, and you're riding in sand and rain and doing tricks and skidding the cranks along cement ledges or something, then you're going to be destroying all sorts of stuff all the time. If it's a more gently used bike, then that's different.
A cartridge BB will help either way, I don't see any advantage in talking the OP out of his decision. It's 100% the best choice for his typical riding conditions.
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Old 06-25-10, 05:35 AM
  #9  
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it is an apollo xc26s link to it at bottom, and i used to ride it on the mountain bike trails round where i live, now i just use it for going to work though since its been going wrong. ok, definitely gonna go for sealed bracket, thanks, now, without buying a crank puller, any nifty ways to get cranks off?? cheers


http://www.halfords.com/webapp/wcs/s...ource=shopping
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