Originally Posted by
asmac
BTW, to the OP, locking the wheels indicates brake failure, not success.
I understand this. As a kids we would lock up rear wheels to do sideways guffy stuff. But nobody was limiting you from gradually applying breaks on a coaster. Disk brakes on my current bike work good at stopping but I wasn't able to lock rear wheel (didn't want to try with front wheel)
V-brakes (cheap ones on those bikes) do 1/3 of stopping comparing to my disk brakes.