RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: Dark Diggler on May 15, 2007, 06:35 PM
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Here's the problem, just got a mirra pro frame off bmxmatt :daumenhoch: and got my new euro bb out of its box and realised there are no threads on the inside of the bb shell, infact it looks too big to house the tiny screw in bb cups, Am I missing something, Matt confirmed it was a euro bb before I bought one, I am confused (dunt take much) here's a pic that hopefully will clear things up ??? All I can think is that I am missing some cups that the bb screws into
(http://www.radbmx.co.uk/archive/albums/p70/simonjturner/bb.jpg)
I have only ever done us so everything else is a bit alien
Is there a guide to shell size/bb needed ?
HELP :daumenhoch:
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Is it not a spanish bb :-\ , dunno what one is i just know there is one :crazy2:
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Dunno if this is anygood to ya' ???
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could be I spose Snav but Matt said Euro, winstanlys are saying euro on the bike specs, I ordered a euro from custom riders.....What could go wrong :LolLolLolLol:
This is why a shell size/bb guide would be a usefull tool,
Mystery ah tell thee :D
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See if you can measure the cup to see if it takes a 37mm bearing
http://www.flybikesbmx.com/noticias/spanishbbeng.htm
Fingers crossed eh ;)
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The shell does measure 42mm wall to wall Hmmmmmmmmmmmmmm
Cheers Snav, I have more of an idea....I think :LolLolLolLol:
Any more opinions anyone :)
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I reckon it's Spanish i.e., Profile bearings without the cups straight into the frame.
Supposed to be better than euro as it happens. ;)
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how new is the frame
could be a mid bb ie just the bearings and no cups of a usa bb
is there a ridge the same size as a bearing
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Gonna try that, the donor bike has profiles-us bb :daumenhoch:
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Don't know if this article is of any use to you.
Click Here (http://www.gsportbmx.com/tech/bbs_again.php)
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perrformer just nock the bearings out of your us bb and they should just fit into the frame.
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::)
Ta very much :daumenhoch: