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Old 11th July 2008   #1
countrybiker
 
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Bcd

where do you messure it from?
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Old 11th July 2008   #2
JOLdonor
 
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Here...

http://www.sheldonbrown.com/gloss_bo-z.html#bcd

..to here.
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Old 11th July 2008   #3
gizmonddonor
 
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EDIT: Damn, to slow, do you have that bookmarked or somit?!?!
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Old 11th July 2008   #4
Greasy Slagdonor
 
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8 or 4 bit bytes?
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Old 11th July 2008   #5
RPMdonor
http://www.google.co.uk/search?q=measuring+bcd

it's polite to at least try before posting questions like this..
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Old 11th July 2008   #6
countrybiker
 
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I did try (just not that hard!)
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Old 11th July 2008   #7
RPMdonor
typing the search into google is easier than creating a new thread.

you can still save this, post a picture of a naked lady with big boobies.

riding a bike.
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Old 11th July 2008   #8
JOLdonor
 
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Old 11th July 2008   #10
Dylandonor
 
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measure centre to centre of 2 corresponding bolt holes. then refer to Sheldon to get the BCD [he has a really useful table]
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Old 19th November 2008   #11
koens
 
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on a related note, is there a perferable bcd? obviously not the obselete ones, but is there a reason you'd ride 135 over 144?
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Old 19th November 2008   #12
adoubletapdonor
 
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^ smaller BCD means you can run smaller chainrings. 144 BCD 41 teeth is lowest 135 BCD can go to 39 (maybe lower?)
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Old 19th November 2008   #13
Will_s87
Who is that girl?

Last edited by Will_s87; 19th November 2008 at 17:48. Reason: She's hawt.
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Old 19th November 2008   #14
saxby's
 
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take the millimetre measurement between two chainring bolt holes then times 1.7 for a five arm crank spider or 1.4 for a 4 arm et voila!
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