Bottom bracket knackered (I think)....which replacement???
Discussion
I was out for my first proper tour of the season yesterday and after about 10km, my bike started clicking and vibrating on every stroke while pedalling at the same point every time.
My pedals are a little worn, but they're ok and I've worked out it can't be them since I span them around and the noise should have been on the opposite side of the stroke yet it remained in the same place.
(Confused? Yes, me too).
Anyhow....I think it must be the bottom bracket so I'm going to replace it and see what happens.
I've got two in mind.
A Hope ceramic and Hope stainless set.
Of course ceramic is more durable, but is it really work almost twice the price of the stainless bracket?
At €50, the stainless one is a reasonable buy. Otherwise, what other brackets could be recommended that are durable and good enough to take another two years of punishment?
My pedals are a little worn, but they're ok and I've worked out it can't be them since I span them around and the noise should have been on the opposite side of the stroke yet it remained in the same place.
(Confused? Yes, me too).
Anyhow....I think it must be the bottom bracket so I'm going to replace it and see what happens.
I've got two in mind.
A Hope ceramic and Hope stainless set.
Of course ceramic is more durable, but is it really work almost twice the price of the stainless bracket?
At €50, the stainless one is a reasonable buy. Otherwise, what other brackets could be recommended that are durable and good enough to take another two years of punishment?
Buy the stainless set, and when they break send it back to Hope (their customer service is excellent).
Of course if they take a couple of years to break, Hope would charge you, but you don't need to do that as you can get new bearings from here:
http://www.mountainbikecomponents.co.uk/result.asp...
Of course if they take a couple of years to break, Hope would charge you, but you don't need to do that as you can get new bearings from here:
http://www.mountainbikecomponents.co.uk/result.asp...
Just thought I'd update this topic.
I've overhauled my frame looking for the slightest crack and there's nowt. What I did find however was side-ways motion on my crank indicating a loose bearing in that area.
Since the bottom bracket is the only bearing for that point, it must be this that's broken.
I've ordered a new Hope stainless steel bracket from CRC so as soon as it arrives, I'll get it fitted and see how that works.....hopefully I won't have to replace the crank!!!!
I've overhauled my frame looking for the slightest crack and there's nowt. What I did find however was side-ways motion on my crank indicating a loose bearing in that area.
Since the bottom bracket is the only bearing for that point, it must be this that's broken.
I've ordered a new Hope stainless steel bracket from CRC so as soon as it arrives, I'll get it fitted and see how that works.....hopefully I won't have to replace the crank!!!!
snotrag said:
Hollowtech II cranks, yes?
Your Crank will be fine.
Make sure your frame has been properly faced when swapping them over.
Your Hope will last much longer than the stock shimano, fear not.
Well, it's hollow if that's what you mean! Your Crank will be fine.
Make sure your frame has been properly faced when swapping them over.
Your Hope will last much longer than the stock shimano, fear not.
I've got one of these fitted on the bike: Truvative Stylo 2pc GXP S/A/A
It came standard with the bike. I did think about upgrading it to an XT unit last year but I ended up having to replace the chain rings in an emergency so I left it for another time.
Also....what do you mean about facing the frame?
Edited by beanbag on Saturday 11th April 12:27
Jimbo. said:
Ensuring that the faces of the BB shell are flat and parallel 
Requires a smidgen of material to be shaved off the edges of the BB shell. Costs what, £10-20ish (?) at a bike shop.
Right, I see....this doesn't affect the frame warranty though? Requires a smidgen of material to be shaved off the edges of the BB shell. Costs what, £10-20ish (?) at a bike shop.Edited by Jimbo. on Saturday 11th April 14:57
I've already booked my bike in for a major service along with the BB replacement so I'll mention it while it's in.
Cheers for the info and I'll let you know how it all goes.....
beanbag said:
Right, I see....this doesn't affect the frame warranty though?
Nope, no worries. As said - if they've already got the bits off anyway, it shouldnt cost you much more than a fiver more, just to cover the price of the (hideously expensive!) facing tool.
On some frames you can get a bit of a buildup of paint/powder coat on the face that the BB cups tigthen up to - this can lead to them being ever so slightly off-linewith each other, and you fit your new bb and it wears out straight away because the bearings are being pulled about.
The facing tool just cleans up the surface to make sure your bb is installed perfectly straight and square.
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