http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: all torque... en Wed, 13 May 2026 05:48:15 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=13556#post-167930 Mon, 13 Oct 2014 12:00:28 +0000 Dave 167930@http://citycyclingedinburgh.info/bbpress/ <p>Another option is to back out the drive side now you've got it on - then you're only trying to do one thing at a time (get the NDS cup to screw in) and you can have a bit more confidence finishing up with the DS again, having already proven to yourself that it does go. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=13556#post-167800 Sun, 12 Oct 2014 08:55:06 +0000 Its_Me_Knees 167800@http://citycyclingedinburgh.info/bbpress/ <p>Many thanks for that. Not close to that figure yet so hopefully all good. Shell wasn't too gunky but I gave it a good clean anyway before putting in the new bb. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=13556#post-167763 Sat, 11 Oct 2014 11:35:46 +0000 Cyclops 167763@http://citycyclingedinburgh.info/bbpress/ <p>Shimano recommend 50-70 Nm depending on which model. If the threads on the BB shell are gunked up it can take a fair bit of effort to screw the new BB in. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=13556#post-167761 Sat, 11 Oct 2014 11:18:04 +0000 Its_Me_Knees 167761@http://citycyclingedinburgh.info/bbpress/ <p>I know the precise answer will be dependent on this-and-that, but does anyone know roughly how much torque should be applied when screwing in a replacement bb into an aluminium frame (my MTB for info..). I'm taking things carefully...the whole deal feels like open heart surgery to me, and I'm definitely no surgeon...and the main body of the bb went in OK but the opposing cup (shimano bbn 55 iirc) seems much stiffer. Threads not crossed and yes, I'm turning it the right way, so maybe I'm just being cautious, but a torque figure would help me... </p>