Old British bottom bracket replacement help

[BADGER.BRAD]

Hello All,

I am planning my upgrading of my of my old battered fixed wheel bike and would like to replace the cottered crank with a cotterless jobbie am I going to come across any size/thread problems ?

Many Thanks.

Brad

 

[squeaker]

Possibly: is it a Rayleigh? There's lots of info here.
I replaced the cottered crank on my 60's Carlton with cartridge BB, but I had to 'remodel' the threads using an old BB cartridge as a tap - not nice, but with much grunt, care and oil it worked in the end and the new BB has remained secure.

 

[bobg]

Sorry posted in error

 

[PatrickPending]

local bike shop rethreaded mine, went cotterless 20 years ago when apparently the bike shop forced a cartridge coterless bb in. when it came to change it 14yrs later my lbs did a proper job and rethreaded the bb. Had another new bb since then (I do a LOT more cycling on this bike - my commuter these days) and new one went in fine.

In shore contact a trusted LBS