Bottom bracket alignment question
Bman
Posts: 442
in General Chat
Hi, Im busy tring to rehab myself from a hip flexor and groin injury on my right side, so while playing with my cleat setup on my commuting bike (noticed my right heel was too far out on rotation, stressing my ITB), I also got to thinking it felt like my whole right pedal was further away from the centreline than my left. This is a MTB which I built, and looking up the shimano instructions, it says to use 2 spacers on the driveside and 1 on the left, but the centre of my rt pedal is still a full cm further away from the centreline of the bike than the left one.
I know youve got the chainset there on the rt but surely this cant be right and would create an imbalance and certainly not help my injured leg?
Any thoughts would be appreciated.
I know youve got the chainset there on the rt but surely this cant be right and would create an imbalance and certainly not help my injured leg?
Any thoughts would be appreciated.
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Comments
That may be a load of rubbish! - but think it makes sense. So, are you measureing the centre line of the bike correctly (note: I have no idea of how that is done!!!), just wondering if you have measured the centre of the bb shell, is the bb shell central in the rest of the frame? Is the BB compatible with the frame?
Just a few ideas, more questions than answers but thought I'd post as noone else has
As above, generally used to align the front rings with the back, but I agree that it's probably doing nothing for your ITB.
Merely dropping my saddle 5mm almost completely eliminated my old running ITB issues which I get on the bike on long rides so small misalignments might be problamatic.
Are you still on an MTB?
Check that you have adequate clearance from the front rings to chainstay, crank arm to chainstay when it's at 9 o'clock and that your centre front ring kind of points to the middle of the cassette - that'll determine if you can remove a spacer or not.
Pat...
I find my MTB with slicks is better for winter/park trail commuting and much better in traffic with narrow gaps, road bike for long rides and summer commuting and tri bike for race days. So i actually think I spend most of my riding time on the MTB, hence the eed to get the setup right.