Originally Posted by
royalflash
as far as I remember using the SON hub dynamo resulted in an approximate increase of work done equivalent to cycling up an extra 0.5m per 1km travelled- so the energy losses from running a SON are certainly nothing to worry about
I've always seen it in Watts and never worked the maths to make it quantifiable in regular people units.
At 0.5m/Km, that's the equivalent of making the StP (Seattle to Portland, 208 miles) appoximately 166.5m longer... or about 1.75 football fields. Assuming a rough estimate of 3000 miles for RAAM, the race would feel 1.5 miles longer.
Makes me feel pretty good about my decision to get a SON28 built into my LHT over the new year. Although, with the number of times I've forgotten to charge my headlight, I'd have bought it anyway just for the convenience.