Brake Caliper Question

[Eugene]

To my knowledge, a brake caliper is a simple mechanical device that squeezes against the wheel rim whenever tension is placed on the cable. The cable is tensioned by squeezing the brake lever on your bar.

 

In the latest Bicycling there is a small article on the new Ultegra groupset. In this article it states that if you want to use the latest Ultegra brakes (calipers), you need to get the latest levers as well.

 

How can any brand of caliper (whether Shimano, Sram or Campag) be dependant on a specific type of lever? Surely any device that can tension the cable (even by pulling with your hand) will activate the caliper.

 

Can someone please explain the statement that was made in Bicycling Magazine.

 

[Mr Mulebar]

The new shape levers and reworked internals of SHIMANO STI's have altered the leverage ratio compared to older versions. Hence the recommendation that you use the new calipers with new levers. It's generally good practice to do so in any case.

 

 

 

It is true that just about any caliper will work with any lever, but the performance will vary.

 

 

 

Lastly, ignore the tech write ups in most magazines as generally they are way off the mark!!!

[Speed Devil]

Eugene I wouldn't worry about that . As MM pointed out the leverage ratio will change, but it won't be very much. It can be overcome by setting your brake caliper a bit wider or closer to the rim.

I have never heard anybody complain when pairing KCNC's or other light weight calipers with their DA, Ultegra, Campag Kempeg or Sram levers.