Bottom bracket stiffens up when installed
05-13-11 | 03:57 PM
#1
Bottom bracket stiffens up when installed
Hi,
I'm trying to install a used bottom bracket in an old frame. The bottom bracket is RPM BB-7420 (cartridge bearings, flange on drive side and a removable ring on non-drive side) and the frame is a POS steel MTB frame from the '90s.
I started by installing the flanged side (drive side) and it was quite difficult to thread, but before the bottom bracket was fully installed (still a gap between flange and bottom bracket housing) the bearing got stiff. The removable ring (non-drive side) was not yet installed.
What might be the cause? Bottom bracket shot? Not fitting? Bottom bracket housing destroyed?
I'm trying to install a used bottom bracket in an old frame. The bottom bracket is RPM BB-7420 (cartridge bearings, flange on drive side and a removable ring on non-drive side) and the frame is a POS steel MTB frame from the '90s.
I started by installing the flanged side (drive side) and it was quite difficult to thread, but before the bottom bracket was fully installed (still a gap between flange and bottom bracket housing) the bearing got stiff. The removable ring (non-drive side) was not yet installed.
What might be the cause? Bottom bracket shot? Not fitting? Bottom bracket housing destroyed?
__________________
My advice is free of charge and of respective quality.
1982 Miyata 912
1998 Wheeler 5900 with front and rear air cushion suspension
2015 Canyon Spectral 7.0 EX
My advice is free of charge and of respective quality.
1982 Miyata 912
1998 Wheeler 5900 with front and rear air cushion suspension
2015 Canyon Spectral 7.0 EX
