07-28-2009, 12:06 AM
Hi,
I recently replaced my worn-out bottom bracket. I didn't have the part with me when I went to the bike shop, but I gave them the width of the bottom bracket when I ordered the part. The guy told me that this one was "slightly wider" but that it wouldn't matter.
After installing the new bottom bracket, I am having difficulty adjusting the front derailleur.
It appears that the derailleur is unable to move far enough out to properly shift the chain onto the large chainring. It is a 3-chainring mountain bike. Even if I pull the cable by hand and remove the H-limit screw, the derailleur does not move far enough out. It gets close, grinds a lot, and sometimes makes the shift.
My question is whether this means that the bottom bracket is simply too wide (it is only maybe a couple mm wider than the old one) and I should get a new bottom bracket or if my front derailleur somehow is faulty in that it can't shift far enough out?
The bike is 15+ years old so it wouldn't surprise me if the part were worn out.
I recently replaced my worn-out bottom bracket. I didn't have the part with me when I went to the bike shop, but I gave them the width of the bottom bracket when I ordered the part. The guy told me that this one was "slightly wider" but that it wouldn't matter.
After installing the new bottom bracket, I am having difficulty adjusting the front derailleur.
It appears that the derailleur is unable to move far enough out to properly shift the chain onto the large chainring. It is a 3-chainring mountain bike. Even if I pull the cable by hand and remove the H-limit screw, the derailleur does not move far enough out. It gets close, grinds a lot, and sometimes makes the shift.
My question is whether this means that the bottom bracket is simply too wide (it is only maybe a couple mm wider than the old one) and I should get a new bottom bracket or if my front derailleur somehow is faulty in that it can't shift far enough out?
The bike is 15+ years old so it wouldn't surprise me if the part were worn out.