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Snapped Bottom Bracket


Ben Beckett

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i need a bb that is square taper, it HAS to be 127.5 mm or 128 mm, i want to know where you can buy them from, how much they are, your opinion if you are/have used them. i want a cheapish one because i had a cheap one for a long time doing many big gaps/drops etc and it lasted many many months, ( i had a shimano one from crc) cheers people!

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iv always wondered why trials riders havn't started using external BBs yet. I have a shimano saint crankset on my GT Ruckus freeride bike and it has taken a shocking amount of abuse without needing any maintenance whatsoever. Altho they are pretty heavy.

When i used to run ISIS bottom brackets on it, they were always giving me hassle.

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Best budget BB you can get in alot of people's opinion: Shimano UN53, £14 from CRC, There tough and the bearing last years.

Echo external BB, for ISIS cranks.

As far as I know no one makes a Hollowtech 2/X-type crankset in either screw on or 5 arm compact, so trials riders haven't been drawn into them, due to them not being able to go any smaller then 22t chainrings, also the limited chainline can be a problem when running a granny ring. Echo make there external ISIS BB which solves these problems.

Edited by Dont you Just Hate it When...
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Best budget BB you can get in alot of people's opinion: Shimano UN53, £14 from CRC, There tough and the bearing last years.

yeah mate that one is good...i'm positive i was using that one1!!

they are mint, probly just need to replace it every six months to avoid snappage!!

EDIT; they don't do 'em' any more.......i had the Shimano XT UN72 Sqr Taper, 68-127.5. Ill have a go at either the one ^^^^up there^^ or the echo vp from tarty!!!

can somone review those to for me please.

cheers for the help guys.

Edited by ben beckett
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Ah, yeah, the XT you had uses a hollow axle rather than the solid one in the UN53. I've always used UN53s on square taper, and haven't had a problem with one yet. I snapped an ancient UN52, but it was about 3 years old.

Edit: I'm sure the hollow axle wouldn't really make much of a difference, but in theory it must make some.

Edited by Dont you Just Hate it When...
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you fat b*****d :P

how long did you have it?

did it go an an awkward moment?

did you hurt yourself when it went?

vids?

max... :lol:

ha hah ha, maxxy ur the fat one u piece of shit!!

i had it since february this year!! i done shit loads of huge stuff on it, i was well suprised it lasted

this long!lol.

i was just front to backin a bar height wall (nothing much because still recovering from a broken toe) got on top of the wall rode along a bit, then hoped off (flicking the back out then front follows, landing ont the back wheel) and then my right foot just went and i heard a snap looked straight round n my crank arm was on the floor :( !!............... walked home and cryed! :$ .......lmao.

didn't hurt me self seing as i didn't clip the bb that is left in the frame (thank fukk). no vids sorry.

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