Originally Posted by
noglider
Another concern is rider position. Mountain bikes have the rider leaning forward pretty well, which might make it hard to apply adequate weight to the coaster brake. If so, be sure to have at least a front rim brake, and be sure to use it.
It all depends on how you kick. If you had a lowracer recumbent with a coaster brake, you would just have to kick at 12 o'clock.
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I used to use a cruiser from a big box store as my winter commuter. I fitted it with some nearly straight hybrid style bars. Same with the 3 speed nexus. They braked fine even though much of my weight was over the bars.