Threadless cartridge bottom bracket
 

Hi there

my bike uses the cartridge bottom bracket as its only a budget carerrra ( only use for work ans some rides when the weather is nor good) my other bikes are hollowtech bb. I am just asking what is better threaded or threadless cartridge bb

Thanks
Andy

By "threadless" do you mean the type that is used for frames that have damaged threads?

Yes i do

Threaded is better if the shell threads are still repairable. otherwise, threadless is an option.
Velo Orange used to sell one, but looking at their site just now, I don't see it.
YST makes a threadless bottom bracket, but the shell must be chamfered 45 degrees to fit just like the Mavic threadless did years ago.
Don't know of any other options off the top of my head.

Well they only fit where they touch, I don't know why you'd be considering those if your threads are still usable. Or even if they're not - I epoxied a cartridge bottom bracket into a shell that had belled out so far that regular cup and cone bearings wouldn't stay put, it worked fine.

Edco made a threadless cartridge that used eccentric cups to hold the cartridge in place, but it's been out of production for many years. Another option is to ream the shell to remove the damaged threads and cut fresh Italian-spec threads (slightly larger diameter than English/ISO or metric threads) and use a standard Italian thread cartridge or cup-and-cone bottom bracket. But that requires specialized tools that many shops don't have. Look for an old, established shop that isn't afraid to service vintage bikes.

Thanks all

TBF, the thread was not bad, this time i really cleaned it, and this time it went on better then ever, and this time i managed to
make a type of a press to keep the tool
in place via a m8 bolt, nut and washers, as in the past the tool sometimes slipped off

cheers

If fitting a bottom bracket is hard work you might want to get the threads chased - most good bike shops will have the necessary tool.

Or French cottered cranks converted to square tapper?

A photo that shows exactly what you're trying to work with would be helpful. I've worked on a few eccentric fit bottom brackets, but after doing a search I see there are several styles.