As noted in my Mad Jack's RR, I lost a brake block.
This came about because I changed the blocks during the week (fitted KoolStop Salmons) and managed to lose the retaining screw which locates against the rear of the block. I thought it would be OK, as the back of the shoe points upwards slightly and the block enters it from the back.
Obviously this is not the case, but I can't see the mechanism to cause the block to come out - the action of braking will cause the block to go further/harder into the shoe.
As noted in my Mad Jack's RR, I lost a brake block.
This came about because I changed the blocks during the week (fitted KoolStop Salmons) and managed to lose the retaining screw which locates against the rear of the block. I thought it would be OK, as the back of the shoe points upwards slightly and the block enters it from the back.
Obviously this is not the case, but I can't see the mechanism to cause the block to come out - the action of braking will cause the block to go further/harder into the shoe.
Any ideas?
Wheeling the bike even slightly backwards with the brake partially applied - perhaps as you were getting on and off trains? Only needs a couple of inches of movement.
As noted in my Mad Jack's RR, I lost a brake block.
This came about because I changed the blocks during the week (fitted KoolStop Salmons) and managed to lose the retaining screw which locates against the rear of the block. I thought it would be OK, as the back of the shoe points upwards slightly and the block enters it from the back.
Obviously this is not the case, but I can't see the mechanism to cause the block to come out - the action of braking will cause the block to go further/harder into the shoe.
Do you not brake when reversing!? ;-)
Slightly more seriously, how about when holding the brake on when stopped on a hill? Or: Jobst Brand's excuse for using the cheapo Continental model is that cartridge pads can dislodge when changing a wheel, although I don't see how myself.
As noted in my Mad Jack's RR, I lost a brake block.
This came about because I changed the blocks during the week (fitted KoolStop Salmons) and managed to lose the retaining screw which locates against the rear of the block. I thought it would be OK, as the back of the shoe points upwards slightly and the block enters it from the back.
Obviously this is not the case, but I can't see the mechanism to cause the block to come out - the action of braking will cause the block to go further/harder into the shoe.
Do you not brake when reversing!? ;-)
Slightly more seriously, how about when holding the brake on when stopped on a hill?
So far this seems the most likely, although I can't confirm, or otherwise, whether I did actually hold at a junction or similar.
The good news is I've found the screw, lurking on the garage floor.
As noted in my Mad Jack's RR, I lost a brake block.
This came about because I changed the blocks during the week (fitted KoolStop Salmons) and managed to lose the retaining screw which locates against the rear of the block. I thought it would be OK, as the back of the shoe points upwards slightly and the block enters it from the back.
Obviously this is not the case, but I can't see the mechanism to cause the block to come out - the action of braking will cause the block to go further/harder into the shoe.
Stopped on an upward slope and used the front brake?
But my first guess would be general vibration. If your brakes are like mine, the block is quite a tight fit into the shoe, which suggests that the block material suffers a shear force which tends to push it back out again, particularly with vibration.
