RADBMX.CO.UK
Technical & Reference Section => Tech and Restoration => Topic started by: modfather on September 17, 2008, 04:18 PM
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Well i am a regular on burnerworld and i have just recently bought a 2008 looptail tanned quadangle frame from the US. I know that a member SE racer is a great help and i will be getting parts from him. The thing is i am just wondering if anybody would know the seat post size for this frame and i am sure this also needs an AMERICAN BBs. Thing is i dont know much about different BBs sizes i hear there are european ones, spanish and american ones. With BBs such as sealed bearings for a three piece crank do they actually all come in different sizes or is it just the hole for the spindle itself that varies in sizes god am so confuse. i will be looking for a complete american BB crank set to fit in this bike of mine sometime soon hope ill have some help in clarifying these crap!
Heres a pic of my frame that arrived this afternoon
(http://www.radbmx.co.uk/archive/albums/b201/irishkilt/SP_A0104.jpg)
(http://www.radbmx.co.uk/archive/albums/b201/irishkilt/SP_A0106.jpg)
(http://www.radbmx.co.uk/archive/albums/b201/irishkilt/SP_A0107.jpg)
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us bb and seat post is 25.4 me thinks. :daumenhoch:
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:daumenhoch: that was quick and easy for ye then! :coolsmiley:
so these sealed bearings do you just stick them in instead of normal BB cups?
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yes mate..piece of piss. :daumenhoch:
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fab! thanks a million :daumenhoch:
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An alternative to using a US BB is to buy a crankset with a Euro BB and buy a converter.
Basically the euro BB screws into the converter which in turn, pushes into the frame, that way you can run cranks like Saints and DXR's.
Here is a converter on ebay...
http://cgi.ebay.co.uk/Truvativ-BMX-American-To-Euro-Bottom-Bracket-Adapter_W0QQitemZ170253691345QQcmdZViewItem?_trksid=p3286.m20.l1116
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now thats wicked! am looking into this. am just wondering is this for a one piece crank or can a three piece eg redline flights can work with this? i am looking at saints and dxrs now to get the idea god am such a noob :-[
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That is for a 3pc crank that has a Euro Bottom Bracket. 1 pc crank Bottom Brackets are American sized as standard.
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so if i buy the BB converter you linked and buy redline flight crank in european should i be on the go then?
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so if i buy the BB converter you linked and buy redline flight crank in european should i be on the go then?
Yes, spot on.
Sorry if this seems like teaching you to suck eggs....
But.
1 piece crank arms + 1 piece crank Bottom Bracket will fit in your frame with no converters needed.
(http://www.radbmx.co.uk/archive/albums/v518/stidds/1piece.jpg)
(http://www.radbmx.co.uk/archive/albums/v518/stidds/1pieceBB.jpg)
3 piece crank arms (Saints in this picture) + Euro Bottom Bracket (notice threading on bottom bracket). Will need one of the converters I linked. The Euro BB threads into the converter which gets pushed into your frame.
(http://www.radbmx.co.uk/archive/albums/v518/stidds/3piece.jpg)
(http://www.radbmx.co.uk/archive/albums/v518/stidds/3pieceBB.jpg)
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Nice one stidds this has really cleared up my head and i can see a bigger picture now thanks so much for your help! :coolsmiley:
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Nice one stidds this has really cleared up my head and i can see a bigger picture now thanks so much for your help! :coolsmiley:
By the way, if you are going to buy Redline Flight cranks new then specify a US Bottom Bracket for it, then it will fit with no converters needed.
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aye i wanted to do that find a redline crank set with US bottom brackets included but it aint easy to find uk base. i am looking for a black crank arm in particular and many comes without a bottom bracket which annoys me.
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Man that quad looks nice..
like the colour...