Botton Brackets

Unknown · June 2007

If square taper BB e.g. UN51 are so strong, why is it that people still go for Octalink cranksets?

Just a thought...

<center>Louise</center>
<center>Parktools Sheldon Brown</center>

Unknown · June 2007

nothing wrong with octalink.

better cranks?

the Square taper is crap really.

nick
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Unknown · June 2007

How come its crap nick?

I thought it being almost indestructable would be a good thing?

<center>Louise</center>
<center>Parktools Sheldon Brown</center>

Unknown · June 2007

the bearings are ok but the interface and the axel not to good.

for general XC type they are fine (and comuting) but for XC race too heavy, for any extrem use too weak etc.

and haveing a distortion mounting system? every time the crank set is removed and mounted it is in a diferent position.

nick
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Unknown · June 2007

Ah right.

So would an Octalink BB be stronger?

<center>Louise</center>
<center>Parktools Sheldon Brown</center>

Unknown · June 2007

I would argue that ISIS and Octalink are stronger without a doubt

Unknown · June 2007

but ISIS bearings dont seem to last as well as Octalink.

External bearing are better again. HT2 and X drive?

nick
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Unknown · June 2007

I think it depends Nick under what conditions you are using them in all honesty but it would appear to be the case as you state

Unknown · June 2007

i am just taking a general over view. of all disiplines and returns figures of a few shops i know.

nick
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Unknown · June 2007

I've heard a few bad things said about ISIS.

The reason I ask is because I have killed another powerspline BB, so rather than just replace the BB I'm thinking about going for the whole lot, as I have killed a couple of powerspline ones. Being a big guy I want the strongest one I can get (money permitting)

<center>Louise</center>
<center>Parktools Sheldon Brown</center>

Unknown · June 2007

go LX HT2 or Hone HT2. both the same except for colour. external bearings sorted. just get the bb shell faced.

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madmole · June 2007

ISIS is terrible, yes the splines may be strong but the bearing go in minutes. Octalink not much better

Square taper is fine unless you are very hard on your bike, the bearings last ages (especially if you use the shimano cartriges), they are cheap and there is a huge range of chainsets for them

Hollowtech also works very very well. Strong, light, bearings seem to last a long time and are dead easy to replace. Probably the easiest to service as well

Marin Mount Vision 2005. Fox RL100/RP3. Hope Pro 2/Mavic XC717/DT rev. Cinders 2.1, XT, Easton 70 bars, ODI rogues, KMC Chain, various bling

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