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PostPosted: Mon Jul 29, 2013 10:17 pm 
Gold Trader
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Joined: Mon Jan 15, 2007 11:40 am
Posts: 3581
I have no idea about hydraulic brakes!

Do they use a standard "push" ratio, the equivalent of a cable brake pull ratio? For example, all canti brakes work on the same pull ratio, as do all V's. And all road brakes too (apart from the very newest ones, I think). So with cables, it's easy to mix and match.

Is it possible to mix and match hydraulic levers and calipers? or do different makes use different ratios (volume of liquid moved / mm of pad movement)?

I started wondering the other day about the possibility of combining the new shimano di2/hydraulic road levers with the sram hydraulic rim calipers... I'd also be interested to know if older MTB magura levers could be combined with a more modern disc caliper, or are they limited to the original rim brake version?


PostPosted: Tue Jul 30, 2013 11:16 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9276
Location: New Forest, UK
A lot will depend on whether they are sealed or open systems. Different piston diameters will give varying amounts of travel and force.

I think it's something best approached by playing and seeing what works - fun ideas though to run mixed road and MTB groupsets for touring, which is badly served by component suppliers.

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