Bicycle Mechanics - 5703 Crankset Question

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billydonn
08-17-12, 07:05 PM
Simple question:
Does the Shimano 5703 crankset use the 74mm bolt circle diameter for the inner chainring, or the non-standard BCD like the new 6703 Ultegra?

Thanks.

dsbrantjr
08-17-12, 07:44 PM
Yes, according to this document: techdocs.shimano.com/media/techdocs/content/cycle/SI/SI_1M30A/SI-1M30A-003-ENG_v1_m56577569830702207.pdf

Hint: Second hit on a Google search on "Shimano 5703 crankset pdf"
Bill Kapaun
08-17-12, 07:51 PM
Hint Shimano tech docs-
http://techdocs.shimano.com/media/techdocs/content/cycle/SI/105/SI_1M30A/SI-1M30A-003-ENG_v1_m56577569830702207.pdf

shelbyfv
08-18-12, 01:16 PM
Interesting that they specify different chains for the doubles than for the triple.
HillRider
08-19-12, 08:33 AM
Interesting that they specify different chains for the doubles than for the triple.
Yes, and even the Shimano tech guy in Calif. couldn't explain why.
Slaninar
08-19-12, 11:34 AM
Yes, and even the Shimano tech guy in Calif. couldn't explain why.

The truth is out there....

So, since I have 5703 crankset, I should get 5601 chain, not 5701?
HillRider
08-19-12, 09:24 PM
The truth is out there....

So, since I have 5703 crankset, I should get 5601 chain, not 5701?
Possibly it is but it would be nice if the maker would let us in on it. :rolleyes:

A 5600 or 6600 chain will both work.