Joined: Apr 2008
Posts: 2,638
Likes: 14
From: Maidstone, Kent, England
Bikes: 1970 Holdsworth Mistral, Vitus 979, Colnago Primavera, Corratec Hydracarbon, Massi MegaTeam, 1935 Claud Butler Super Velo, Carrera Virtuoso, Viner, 1953 Claud Butler Silver Jubilee, 1954 Holdsworth Typhoon, 1966 Claud Butler Olympic Road, 1982 Claud
Please forgive my ignorance of US bottom brackets, but will the adaptor shown fit a bottom bracket with no internal threads?
I've got an old Tensor Sport bike (frame made in West Germany in the 1970's, very low end. It has a Thun chainset (bent) with chrome steel cranks. The right crank & chainwheel is fixed to the axle. The left crank is fitted with a cotter pin. The left cup is held in place with a nut that threads onto the axle. The BB shell is larger diameter than normal and has no threads. The BB cups are thin plate with a lip that goes OVER the outside of the BB shell and they are free to rotate. I'd like to fit a normal square taper BB and chainset.
Sorry no pictures or measurements as I haven't got the bike here. Does it sound like this type of adaptor is what I need?