campag AND shimano toegther.. in harmony?

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Postby jon avery » Tue Jul 10, 2007 3:52 pm

What about your chain ring on the yellow (was it Ribble?) bike?
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Postby mrP(Boonen)VT » Tue Jul 10, 2007 4:01 pm

Without boring you all to tears, it is very technical.

Shimano (did I just type that? :twisted: ) rear mechs pull a cable ratio of 58%, or if the cable is routed around the opposite side of the cable clamp, 64%. Pre 2000 campag was 70% and post 2000 67%. SRAM 100%, although in tests, it was measured at 90&.

The shifters also pull a diffeent amount of cable for each click - Shimano (again :twisted: ) 8, 2.78mm, 9 - 2.52mm, campag 9 3.05mm and 10 2.78mm.

If you do the math, you can work out that per shift, a shimano (!) 8 lever with a campag rear mech pulls 4.16mm per click, and campag 10 speed 4.15mm, which is so close as to be perfect.

OK

I'm off to do some yoga


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Postby jon avery » Tue Jul 10, 2007 4:08 pm

So you do have Shimano then! Sean will be pleased :lol:
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Postby Elliot M » Tue Jul 10, 2007 5:24 pm

more on "Shimergo" on the CTC sitew

http://www.ctc.org.uk/DesktopDefault.as ... 6#Shimergo
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Postby mrP(Boonen)VT » Wed Jul 11, 2007 8:33 am

Nice one Elliot, that is exactly what I was talking about :D
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Postby kieran » Fri Jul 13, 2007 11:15 pm

works a treat as well, I've got 10 speed campag levers working a rear shimano derailleur with shimano 10speed cassette by using the thingy from Jtek engineering in the US.
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