[RBW] Re: Question about 73mm bottom bracket shells

2021-02-07 Thread Ray Varella
Thank you Benz, that clarifies things. It’s an academic question as I don’t have a bike with a 73mm shell. I own plenty of parts to keep a few bikes on the road for the foreseeable future. I can’t really justify adding a new standard with plenty of good stuff on hand. Cheers, Ray On

[RBW] Re: Question about 73mm bottom bracket shells

2021-02-07 Thread Benz Ouyang, Sunnyvale, CA
You shouldn't change the spindle length because the spindle length is primarily used to determine chainline. What you should do is to look for a BB spindle length 122mm, but with a 2.5mm offset*. Then you can use a lipless mounting ring to secure the shorter cartridge BB in the wider BB shell.