has anyone got any experience of truvative external BB?
went out for a quick road ride last night and when climbing the valley, nothing drastic inclinewise, a knocking began everytime my driveside pedal got to 1 o'clock. only occurs when pressure is on.
immediatly jumped off the bike thinking that the chainset (truvative rouleur) had come loose but it was fine. rode off again and knocking resumed and started to get louder (surprisingly loud).
got off again and checked chainset/bb to see if any play (when my shimano bb went out recently there was a lot of play), nothing. and when i pedal there is no notchiness, just the knock.
although the sound seems to be coming from the bb area i've checked the rear mech, cassette and wheel for play and chain has no stiff links - but to be honest it does'nt sound like a transmission noise.
could it be the BB on the way out, its got me stumped?
Bit of a hi-jack Gav... But Im getting exactly the same problem on my XT cranks (fitted in December) and regularly *ahem* Probably covered less than 500 miles and it is knocking at the 1 o clock position when you look at it from the DS. But the weird one is that I am not getting any play...
Had exactly the same problem with my Truvativ BB - bike came with Truvativ Stylo chainset. First failure after 6 months then again after another 4 months. LBS mechanic reckons they are made of cheese and suggested in the long run cheaper to buy a new XT/Saint/SLX chainset than to keep replacing Truvativ BB's
They do seem to wear out pretty quickly, but i'd pull the cranks off and check the cups are tight in the frame, any looseness there and it'll click like hell and may take out your BB threads as a bonus.
Sounds like mine after a years heavy use, I got a replacement BB from Wiggle for £30.
Next time it goes i'm going to replace the chainset with a Shimano one with a Hope BB.
Could be the BB bearings, as they do seem to be made of cheese-smart price at that.
As said above, check the cups are tight in the frame, so take them out & check the threads 1st.
Also don't discount your pedals, I've had them cause clicking in the past