Technical & Reference Section > Tech and Restoration

Struggling to fit bottom bracket cups

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therock:
Could anyone tell me if there s different size bottom bracket cups . I'm really struggling to get them in . It's as though there to big to go in and I dont want to do any damage . The frames an 84 torker 280x . Any help would be greatly appreciated.

BMX1973:
I'm sure it would be a standard Tange/Tioga American Bottom Bracket. I don't know the size of cups but all, if not most are standard. :-\

Could someone else confirm if this is the correct one! This is for a One Piece Crank, or are you fitting a Three Piece? :-\

https://www.ebay.co.uk/itm/Old-School-BMX-Tange-Seiki-BB220ST-Bottom-Bracket-for-one-piece-BMX-Cranks/202451752278?hash=item2f23109556:g:FUAAAOSwlApbrgEQ

I have normally pressed them in with a long metal rod with a block of wood on each end. Do one at a time though.

 :daumenhoch:

That Swan Guy:
Some can tight. I use vice and slowly increase the pressure making sure they’re square to the frame at every twist

therock:
Yes it's a one piece . Iv never known there to be different size cups . Maybe it's just me being to cautious

Chilli Rinse:
If it’s recently been painted or powdered the bottom bracket shell could possibly need reeming out. Just a thought though.

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