I feel you're pain at the moment on my 3 bikes there seems no logic on some wheels (all 700's) some pads work beautifully and others are hopeless, here's a list
Claud Butler Fixed, black rubber nice MTB (Clarks "shimano XT") style **stop 100% anytime **with standard callipers
60's BSA single speed, MTB style mid range stop very poorly on the front unless its wet then they stop 100%, rear is Salt clear BMX pads stop anytime anywhere any speed, but can only be used on this wheel as make a horrific embarassing shriek on any other wheel
1950-60 Raleigh Racer front Camapagnolo callipers and original pads stop 100% anytime anywhere, rear Clarks road blocks **almost hopeless, gradual slowing
**
1990 Carrerea racer (awaiting copmpletion but running) stops totally dead with the same clarks road pads above with Vbrake set up, no rear brakes as being converted to fixed
I buy mine from Halfords so not too much of a range but I do agree there doesn't seem a randomness
I feel you're pain at the moment on my 3 bikes there seems no logic on some wheels (all 700's) some pads work beautifully and others are hopeless, here's a list
Claud Butler Fixed, black rubber nice MTB (Clarks "shimano XT") style **stop 100% anytime **with standard callipers
60's BSA single speed, MTB style mid range stop very poorly on the front unless its wet then they stop 100%, rear is Salt clear BMX pads stop anytime anywhere any speed, but can only be used on this wheel as make a horrific embarassing shriek on any other wheel
1950-60 Raleigh Racer front Camapagnolo callipers and original pads stop 100% anytime anywhere, rear Clarks road blocks **almost hopeless, gradual slowing
**
1990 Carrerea racer (awaiting copmpletion but running) stops totally dead with the same clarks road pads above with Vbrake set up, no rear brakes as being converted to fixed
I buy mine from Halfords so not too much of a range but I do agree there doesn't seem a randomness