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longest lasting, most trouble free, most commonly used Bottom Brackets.

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longest lasting, most trouble free, most commonly used Bottom Brackets.

Old 03-28-11, 05:40 PM
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CabezaShok
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longest lasting, most trouble free, most commonly used Bottom Brackets.

Anyone know what the longest lasting, most trouble free, most commonly used Bottom Brackets are?....oh, and easily maintained using cheaper tools.

i Dont care about weight. just need a BB for my MTB commuter with all the above
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Old 03-28-11, 05:51 PM
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Phil Wood. But it isn't very common.

Just put in a cheapo sealed bearing shimano one. Maybe Alivio Level and up. They last for a while unless you like to ride at the bottom of the sea.
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Old 03-28-11, 06:19 PM
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Yeah, the Octalink BB's are pretty good -- although I had issues with the CRANKS....

ISIS is better, IMO. If you happen to catch a good external BB, they can do just as well. So far, my RaceFace X-type has been flawless (Deus level....).
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Old 03-28-11, 06:30 PM
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Shimano square-taper cartridge.
In my experience they last an easy 10 years.
As opposed to these &*%*#@)@!@ outboard bearings that last less than two years.
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Old 03-28-11, 06:49 PM
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Originally Posted by Shimagnolo View Post
Shimano square-taper cartridge.
In my experience they last an easy 10 years.
As opposed to these &*%*#@)@!@ outboard bearings that last less than two years.
+1

I have a UN-54 that has outlived two frames!
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Old 03-28-11, 07:20 PM
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dammit i should have posted this thread prior to purchasing Truvativ Howitzer GXP BB and crankset..... it has torque sensitive external bearings that are low grade......and require a $25 tool ill prolly never use again.

live and learn....and read
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Old 03-28-11, 07:35 PM
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I would say the Ultegra 6500s were pretty hard to beat for the price, but Shimano quit making them -- probably because they lasted too long.
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Old 03-28-11, 09:27 PM
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Shimano un-52, the last word in bottom brackets. It's 95% of the quality of a Phil Wood at 5% of the price.
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Old 03-28-11, 09:33 PM
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This is a good thread to learn from. The best bottom bracket is the one I never remove. =P
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Old 03-28-11, 09:48 PM
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Shimano UN54 is my all time fave. I've got them in everything from my dumpster-rescue singlespeed conversion to my fancy-pants brevet bike.

I'll find out how awesome (or not) the Truvativ GXP is in the coming months. I've got a SRAM S300 single with GXP external BB going on my CX bike.
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Old 03-28-11, 10:47 PM
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+1
un-54
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Old 03-28-11, 10:52 PM
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Phil Wood is the best. Shimano is probably the best for the money.
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Old 03-29-11, 08:26 AM
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Glad to see all the votes for the UN-54 Shimano offering. That's what I decided on for my new Surly LHT build.

The crappy BB on my Schwinn hybrid gave up the ghost last week and had been a major issue on the bike for at least a year, so I'm looking fwd to having a solid BB between the cranks!
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Old 03-29-11, 09:48 AM
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Phil Wood is my only choice.......can never get more than 5,000 miles on a Schimano product.
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Old 03-29-11, 09:50 AM
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Originally Posted by CabezaShok View Post
dammit i should have posted this thread prior to purchasing Truvativ Howitzer GXP BB and crankset..... it has torque sensitive external bearings that are low grade......and require a $25 tool ill prolly never use again.

live and learn....and read
On the bright side, it sounds like you'll use the tool every couple of years!
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Old 03-29-11, 10:02 AM
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Originally Posted by CabezaShok View Post
dammit i should have posted this thread prior to purchasing Truvativ Howitzer GXP BB and crankset..... it has torque sensitive external bearings that are low grade......and require a $25 tool ill prolly never use again.

live and learn....and read
I think external is worth it. I'd recommend it, but not to people who are super cost conscious.

I've run a GXP BB for a year and about 2,500 miles and it has worked flawlessly. And I've run a mega exo for about a year and a half and maybe 3,500 miles (winter, summer, rain, cold, ice, etc) and it's worked flawlessly. Obviously these are short runs for a BB, so it doesn't tell much except that they're not completely defective designs.

Much easier to install/remove. I've spent hours getting a frozen internal bb out before. Busted a crank extractor removing square taper cranks, etc. Everything has its issues "down there."
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Old 03-29-11, 10:08 AM
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Another +1 on shimano UN-54. I have no complaints about it. Those BB take a beating and keep spinning smooth.
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Old 03-29-11, 10:28 AM
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I use the older loose bearing type. They can be easily dismantled and serviced without special tools- a pipe wrench and adjustable spanner will often suffice. They're dirt cheap and with periodic regreasing they can pretty much last for ever.
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Old 03-29-11, 10:41 AM
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Originally Posted by BILLB58 View Post
Phil Wood is my only choice.......can never get more than 5,000 miles on a Schimano product.
Schimano?...sounds like a cheap imitation to me. Try the real thing next time.
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Old 03-29-11, 10:44 AM
  #20  
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Originally Posted by silver_ghost View Post
+1

I have a UN-54 that has outlived two frames!
I believe it. They're pretty much bombproof.
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Old 03-29-11, 10:47 AM
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Phil Wood is the pinnacle. SKF of Gernany is producing some excellent quality sealed cartridge BB's (I have one on my all-season commuter), but since you are concerned about tool cost I would assume you are on a tight budget.

With that in mind, Shimano is really hard to beat for bang for the buck.
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Old 03-29-11, 10:53 AM
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Originally Posted by Shimagnolo View Post
Shimano square-taper cartridge.
In my experience they last an easy 10 years.
As opposed to these &*%*#@)@!@ outboard bearings that last less than two years.
I replaced the caged bearings in my Hardrock with the Shimano square taper bearings a few months ago and wish I would have done it sooner. I took it to the shop to get the fixed cup removed and the threads chased, and bought the installation tool for about $15. You'll need a crank puller too, but you'll be set for tools after that.

Last edited by no motor?; 03-29-11 at 02:50 PM.
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Old 03-29-11, 11:35 AM
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This is a very interesting thread. It's nearly impossible to get a high-end bike that doesn't come with some variation of external bottom bracket. In the past four years, I've had to replace two bottom brackets -- a "semi-catridge" (whatever that means) that came with a cheap GT and got serious scoring on the races in under 2000 miles, and a MegaExo that possibly could have been saved (bearing failure after about 5000 miles, including a lot of CX racing) but was cheaper to replace with a Dura-Ace HollowTech II than to have serviced. I'm nt sure what to conclude.

Last edited by Andy_K; 03-29-11 at 11:40 AM.
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Old 03-29-11, 12:29 PM
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I have a Race Face external BB with ~8500 miles after five years of riding almost daily without a hitch. I do like the crank removal feature as well.
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Old 03-29-11, 12:31 PM
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Ive been rocking a Shimano UN-71 for several years not a single problem.
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