How you fit a modern bottom bracket in a klunker?

[Duchess]

If you do the conversion to a modern BB, keep in my mind that you may need to do some grinding and such inside the bottom bracket housing to make clearance for the cups and the bolts. In the case of a Sears Spaceliner, getting anything big enough to work for anyone with less time on their hands than an inmate serving life is difficult. I found a hole saw worked to get enough depth for the cups and a round file made the clearance for the bolts.

 

[ratina]

http://thecabe.com/vbulletin/showth...-47-CWC-bike&highlight=bottom+bracket+klunker


This is my bike. I finally went to the bike shop yesterday to get the right parts. I needed a 68x127.5 spindle length with one spacer. Fits perfect now.

 

[bikiba]

nice - I am contemplating doing the same thing to a Dutch road bike I have from the 50s to get some gears on the bike. i'm just torn if I really need to or just be happy with a sturmy 3speed coaster brake.