BR-7070 Calipers

[derrick]

Got a problem with front hydraulic brake, have been on Shimano site cannot find information i need.
Got a bike with a BR-R7070 Caliper on the front, The BR-7070 comes either front or rear, does anyone know what the difference between the front and rear are.
The problem i am having is, i have good pressure on the lever but bike will not stop as it should, been through all incompatibility problems, STR 7025 lever, BH90 brake pipe silver inserts. shimano fluid.

 

[I like Skol]

Contaminated pads/discs.

 

[derrick]

Contaminated pads/discs.

New disc new pads.

 

[si_c]

New disc new pads.

Could easily still be contaminated. Did you thoroughly clean the rotors before you refitted the wheel?

 

[Kbrook]

There’s no difference between the front and the rear other than the front comes with a little bock underneath to switch between 140/160 rotors. if you need a new one you can buy either and just remove the block from your old one via two bolts underneath.

 

[Kbrook]

Regarding the other matter if your discs were contaminated you would have noise, horrible noise, if that’s the case clean or replace. The obvious other thing would be it needs a bleed but that would lead to a spongy feel at the levers which you say you don’t have.

 

[I like Skol]

Have they ever worked?