Originally Posted by
TandemGeek
I'm inclined to believe that the Rohloff operating demands are very different from single speed and VERY different from a tandem sync belt application, remebering that the Rohloff can generate some serious loads on that very small rear sprocket in its shorter climbing gears. A belt slip / ratcheting in that situation would be disconcerting.
If you think about it, the load in the belt from pedaling is going to be equal to the (tangential) force on the pedal times the ratio of the crank length to front sprocket radius... so a Rohloff setup would probably have about the same belt loads as a tandem timing chain.