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Technical & Reference Section => Tech and Restoration => Topic started by: therock on February 02, 2020, 04:40 PM

Title: Struggling to fit bottom bracket cups
Post by: therock on February 02, 2020, 04:40 PM: 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.
Title: Re: Struggling to fit bottom bracket cups
Post by: BMX1973 on February 02, 2020, 05:52 PM: 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:
Title: Re: Struggling to fit bottom bracket cups
Post by: That Swan Guy on February 02, 2020, 06:10 PM: Some can tight. I use vice and slowly increase the pressure making sure they’re square to the frame at every twist
Title: Re: Struggling to fit bottom bracket cups
Post by: therock on February 02, 2020, 08:00 PM: Yes it's a one piece . Iv never known there to be different size cups . Maybe it's just me being to cautious
Title: Re: Struggling to fit bottom bracket cups
Post by: Chilli Rinse on February 02, 2020, 08:32 PM: If it’s recently been painted or powdered the bottom bracket shell could possibly need reeming out. Just a thought though.
Title: Re: Struggling to fit bottom bracket cups
Post by: vestanpance on February 02, 2020, 08:41 PM: Cups in the freezer overnight helps. :daumenhoch:
Title: Re: Struggling to fit bottom bracket cups
Post by: Smidsy on February 03, 2020, 03:19 PM: I can confirm Torker 280 is American BB and came with Tange bitd.

Tange Seike BB220ST as posted earlier is indeed correct fitment.
Title: Re: Struggling to fit bottom bracket cups
Post by: therock on February 03, 2020, 06:31 PM: Thanks for replies chaps . The frame was masked up before paint so isn't paint . Think I'm going to take it to Alan's and get them pressed in. The headset cups were hard work also . Cheers again
Title: Re: Struggling to fit bottom bracket cups
Post by: Spen69 on February 03, 2020, 08:07 PM: Couple of blocks of wood and a 3-1/2 lb club hammer always did the trick for me fistblump
Title: Re: Struggling to fit bottom bracket cups
Post by: Chilli Rinse on February 03, 2020, 08:22 PM: Quote from: Spen69 on February 03, 2020, 08:07 PM
Couple of blocks of wood and a 3-1/2 lb club hammer always did the trick for me fistblump

Yup, that’s the method that works for me :slayer:
Title: Re: Struggling to fit bottom bracket cups
Post by: Smidsy on February 04, 2020, 10:52 AM: Quote from: therock on February 03, 2020, 06:31 PM
Thanks for replies chaps . The frame was masked up before paint so isn't paint . Think I'm going to take it to Alan's and get them pressed in. The headset cups were hard work also . Cheers again

Don't be a woos....hit it man :LolLolLolLol: explosion
Title: Re: Struggling to fit bottom bracket cups
Post by: therock on February 04, 2020, 07:59 PM: :D hahahaha I keep thinking I'm going to split the frame .
Title: Re: Struggling to fit bottom bracket cups
Post by: bobafett on February 05, 2020, 10:41 PM: Cups can be a pain in the arse mate..... I've made presses and shit over the years that have worked fine with one frame and then not with another..... like the lads have said.... best plan at the end of the day is to just twat'em :knuppel2:

:daumenhoch:
Title: Re: Struggling to fit bottom bracket cups
Post by: Taipan on February 10, 2020, 11:16 AM: Yep just twat-um! square on ;) never seen a a frame twang! apart no matter how hard I smacked it! ;)