Boardman CX Comp 2014 - Bottom Bracket

[dazzadoom]

Hi all,

Got a Boardman CX Comp 2014 with a bit of play in the bottom bracket after 800 miles. I know its a square taper 68mm shell but when trying to find a replacement, there are lots of variants:

68x110
68x118
68x115
68x127
etc

Does anyone know which i need, or a suggestion as to one that would last a bit longer than 800 miles! Also, what does that second set of numbers refer to?

Thanks very muchly!

 

[ianrauk]

A square taper BB with play after 800 miles. Blimey, you sure it's the BB? Square taper BB's are usually one of the most reliable of all BB's.

 

[dazzadoom]

Aye, bit of play when you move the end of the crank arms (both sides), and a rumble when spinning gears on the stand. :/

 

[ianrauk]

oh ok.

The figures above are the BB shell size and the width.
68 is a normal English shell size.
You just need to check the width.

 

[dazzadoom]

ahh, so crank arms off and measure end to end? Got it.

Will report back when i know incase it helps someone else.

Thanks.

 

[dazzadoom]

Ok so just stripped it down and measured it at 103mm. So 68 x 103mm.

Done a search and there's not much choice to be honest. Anyone know why the wierd size?

 

[evo456]

Wouldn't it be best just to go back to get a replacement gratis? I'll be looking to replace mine with hollow tech II variety when the time comes... but I could be waiting a long time.

 

[evo456]

Ok so just stripped it down and measured it at 103mm. So 68 x 103mm.

Done a search and there's not much choice to be honest. Anyone know why the wierd size?

Sounds very short to me, when I get back tonight will measure mine.

 

[dazzadoom]

Wouldn't it be best just to go back to get a replacement gratis? I'll be looking to replace mine with hollow tech II variety when the time comes... but I could be waiting a long time.

I wasnt sure they would cover the Bottom Bracket under warrenty if im honest. Guess i could ask...

 

[evo456]

Worth a try, nothing to lose. It can't be more than 4 months old

 

[dazzadoom]

Correct, bought start of Oct.

 

[Nathan AV]

Sorry for the thread resurrection, I didn't want to start a new topic with this here already. Did you resolve the bottom bracket issue @dazzadoom? Im asking as according to my Strava my boardman has done 854 miles and the bottom bracket sounds like a bag of spanners so it may need replacing (I've never had to deal with square taper before).

 

[NormanD]

Take the BB out and it should have the size printed on the side of it .. like THIS ...

 

[Nathan AV]

Thanks @NormanD

 

[supercooper88]

So did you find the size and if so what is it as I have this bike a could be useful to know cheers