Originally Posted by
AlmostTrick
Just try it, you may get lucky. A half chainlink and/or trying different chainring/rear cog configurations may get you there. Here's a coaster brake I made work in a frame with vertical drop outs. Chain tension is perfect.
That set up is temporary and will only work for a few short rides before the chain stretches and becomes loose....What happens when the chain stretches and becomes too loose after few hundered miles and need to be re-tensioned ??...It very dangerous to ride with loose chain when the drivetrain is used as a primary brake.