I am the new owner of an 83 Specialized Expedition.
It came to me disassemble and I have further taken everything off for cleaning and inspection.
The bottom bracket feels rough and I want to put in a new one, but I havenít a clue which one to buy.
I took out the old one, and some of the text on it was erased by the generator wire rubbing on it. Hereís what I can read, with guesses filled in in parenthesis Ė
Taper: Vx( )size
Thread: (1.37) x 24t
Lug Widt(h: 68-)70mm
Chain Lin(e: ).5mm
It is a sealed unit with tapered square axles that is 126mm long with a 30mm spindle on the left and a 35mm spindle on the right.
I have a Sugino AT 48-44-28 (110/74) up front and a Suntour Winner Ultra-6 13-30 in back. The BB width is 68mm and the frame spacing is 125mm.
I know that itís ĎEnglish threadsí but thatís as far as I can get for searching for a new unit. I can find 125 and 127.5 lengths and the only mention of offset is by Phil Woods.
Obviously Iím a Noob to this; what new BB will fit?
Thanks - Keith