Hello, first post here. My 30+ yrs old 3 speed brompton Is having a new lease of life with my Swytch kit. But it could do with some love. I would like to replace the worn crankset, sprocket and chain which is within my ability. But I am not sure about the BB. It sounds dry and has some slack but it spins and works and the bike is only used recreationally. It looks relatively easy to install a new JIS cartridge which would open up crankset options but looking at the existing bb I have a nasty feeling that it will be a pain to remove given its age.
Unfortunately as this is my first post It doesnt look like I can post photos of the BB but here is a link to them (apologies if this does not work either)
https://photos.app.goo.gl/XdAk3j15YWG6Na8u6.
The BB looks old with metal endstops each end - The chain side stop has an 8 sided nut shape the other side has 4 notches at 90 degrees to each other and a 24 ish mm hex further inboard. Being a keen diyer I dont like to admit defeat but I wonder what people think. I'd be interested in knowing its make / type and should I just use it (if it aint broke dont fix it)? Could it be oiled? Is it likely that it could be removed by a diyer with the right tools or is it a shop job.
I would much appreciate any advice. Thank you
Apols if the images do not show.
Cimh
Unfortunately as this is my first post It doesnt look like I can post photos of the BB but here is a link to them (apologies if this does not work either)
https://photos.app.goo.gl/XdAk3j15YWG6Na8u6.
The BB looks old with metal endstops each end - The chain side stop has an 8 sided nut shape the other side has 4 notches at 90 degrees to each other and a 24 ish mm hex further inboard. Being a keen diyer I dont like to admit defeat but I wonder what people think. I'd be interested in knowing its make / type and should I just use it (if it aint broke dont fix it)? Could it be oiled? Is it likely that it could be removed by a diyer with the right tools or is it a shop job.
I would much appreciate any advice. Thank you
Apols if the images do not show.
Cimh