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The perfect chainline on a Rohloff gives you would be worth a considerable amount (over a ride like TCR) compared to sub-optimal chainlines from derailleur setups. I'd definitely like to see the numbers if you find them and apply them to TCR type distances.
@TM thanks for the heads up on electric Rohloff. The need for a gripshift (or heinous bodge for ergo type levers) was one of the things that kept putting me off about Rohloff hubs.
Greenbank
But what about the efficiency? Ie they are meant to waste more power than a derailleur.
I've not run numbers on it to see what difference it makes to speeds, and in these races people's drivetrains get dirty so derailleur drivetrain efficiency reduces.
That comparison would dictate if it would be a good option