Threadless Bottom Bracket

This is a real bummer, my friend has had an MBK (motobecane) for years, he took it over when his farther died and loves it, yesterday he took the BB out because it's knackered, and guess what, no threads whatsoever, it seems to have an old style threadless BB.

So what are the options here, has anyone had success with modern day threadless BB, loads of people say they come loose.

have a feeling Acore make some, might be wrong on the name....but ive seen some. never put one in a bike though.....

maybe you could get a thread cut in there by someone?

maybe you could get a thread cut in there by someone?

Righty just had a look at this frame as i was previously going off what he told me over the phone, anyway, sure enough there is no threads at all, i've tried to push a spare BB cup into the shell and it wont go in, this tells me that there is metal there to allow threading. So, will a bike shop do it or is it a frame buiders job, are there any frame builders in Newcastle that anyone knows of.

this guy has lots:
http://cgi.ebay.co.uk/YST-bottom-bracket-for-DAMAGED-FRAMES-113mm_W0QQitemZ300243903219QQcmdZViewItem?_trksid=p3286.m20.l1116

this guy has lots:
http://cgi.ebay.co.uk/YST-bottom-bracket-for-DAMAGED-FRAMES-113mm_W0QQitemZ300243903219QQcmdZViewItem?_trksid=p3286.m20.l1116

Yeah but they are crap, are they not.

Some bike shops maybe able to help other so it will be case of go and ask / ring round. The tool required it very expensive and in fact is usually only used for chasing threads out rather than cutting them to start off with. Are there any signs of old thread in the shell that have been stripped?

First go to http://www.sheldonbrown.com/bbsize.html#threading

measure the internal diamiter of the shell to check what threading standar it will end up being. It should be I.S.O / british but best to make sure. Good luck.

P.S last but not least here is a threadless b.b http://www.sjscycles.co.uk/product-0-Prestine-THREADLESS-Sealed-bearing-bottom-bracket-for-frames-with-damaged-threads-16505.htm

Some bike shops maybe able to help other so it will be case of go and ask / ring round. The tool required it very expensive and in fact is usually only used for chasing threads out rather than cutting them to start off with. Are there any signs of old thread in the shell that have been stripped?

First go to http://www.sheldonbrown.com/bbsize.html#threading

measure the internal diamiter of the shell to check what threading standar it will end up being. It should be I.S.O / british but best to make sure. Good luck.

P.S last but not least here is a threadless b.b http://www.sjscycles.co.uk/product-0-Prestine-THREADLESS-Sealed-bearing-bottom-bracket-for-frames-with-damaged-threads-16505.htm

Ok cheers, will look into it further today, still dubious about those threadless barckets though.

Just bought myself one of these, british standard 68mm and £10 cheaper than the SJS one. Although I don't think I can use my Campy Crankset with this bb:(

Not sure why you couldn't use a Campy crank, unless you think it's too long for your chain line. The taper should fit.

I think the standards are different i.e. JIS and ISO, no sure which is which but Shimano isn't completely compatible with Campy BBs, or so I've been led to believe. Off to check with sheldon.

Okay, your right, the difference in the standards is that ISO has an end dimension of the square spindle that's 0.2 mm smaller across the flats than JIS. Will give it a go before I splash out on shiny bits.