London Fixed-gear and Single-speed SJS Cycles

countrybiker · 11th July 2008

where do you messure it from?

JOL · 11th July 2008

Here...

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

..to here.

gizmond · 11th July 2008

EDIT: Damn, to slow, do you have that bookmarked or somit?!?!

Greasy Slag · 11th July 2008

8 or 4 bit bytes?

RPM · 11th July 2008

http://www.google.co.uk/search?q=measuring+bcd

it's polite to at least try before posting questions like this..

countrybiker · 11th July 2008

I did try (just not that hard!)

RPM · 11th July 2008

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.

JOL · 11th July 2008

countrybiker · 11th July 2008

http://i226.photobucket.com/albums/d...1/bikeporn.jpg

will that do?

Dylan · 11th July 2008

measure centre to centre of 2 corresponding bolt holes. then refer to Sheldon to get the BCD [he has a really useful table]

koens · 19th November 2008

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?

adoubletap · 19th November 2008

^ smaller BCD means you can run smaller chainrings. 144 BCD 41 teeth is lowest 135 BCD can go to 39 (maybe lower?)

Will_s87 · 19th November 2008

Who is that girl?

saxby's · 19th November 2008

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!

11th July 2008	#1
countrybiker	Bcd where do you messure it from?
	quote reply

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.
	quote reply

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11th July 2008	#3
gizmond	EDIT: Damn, to slow, do you have that bookmarked or somit?!?!
	quote reply

11th July 2008	#10
Dylan	measure centre to centre of 2 corresponding bolt holes. then refer to Sheldon to get the BCD [he has a really useful table]
	quote reply

19th November 2008	#11
koens	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?
	quote reply

19th November 2008	#12
adoubletap	^ smaller BCD means you can run smaller chainrings. 144 BCD 41 teeth is lowest 135 BCD can go to 39 (maybe lower?)
	quote reply

19th November 2008	#14
saxby's	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!
	quote reply

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