Originally Posted by
Bill Kapaun
I've made the exact swap at least 2 times without issue.
Well hot damn!
Originally Posted by
Kimmo
And for good measure, a little extra grease and Nm on the left taper
... Bonus tip: you can make thread chasers out of old cups by cutting slots in them with a dremel.
Ha, this isn't the bike with the creaky BB, this is the bike with the toasted BB.
Thanks for the tip about the cups, I was about to ask what to do with them. I'll have to look into the chaser thing. BTW, are cups more or less universal? Could I swap a cup from one bike to another?
Originally Posted by
FMB42
How many speeds are you working with? ...your relative* chainline could actually end up being as much as 5 or more mm further outboard.
Well, this is a 7-speed bike (single chainring, 7-speed freewheel). So I'm hoping it behaves more like a multi-speed bike with regards to any chainline change. What I don't really understand is why exactly the chainline would change... I need to actually see/install a cartridge BB and read that manual to have a better idea of what I'm doing. If I'm going from 3P 119 mm to sealed 122mm, I can't really get past the mental idea of, "OK so it's just 3 mm more sticking out the left" or whatever.
Originally Posted by
FMB42
You might even consider drilling ~ a 1/8" hole through the very bottom of the BB shell while you've got it all disassembled (this will, of course, allow water to drain from the BB shell).
I've heard about adding weep holes. Probably wouldn't hurt on the craptastical bikes I work on. Is there any particular way I go about it? Right dead center underneath the center of the BB axle? Just get a little punch to make a dent, and then go at it with a drill? Is there any way that dirt or spray from underneath the bike can shoot inside the BB from underneath, or is it totally safe?