Well I don't like wh/km alone because that's just fuel consumption, and the same bike will get different consumption at different speeds, so I figured the optimal speed to test a steady state consumption would be 25km/h given the belief that pretty much any bike can reach it. So that's why I figured wh/km @ 25km/h was a better idea then just wh/km.
The above, plus max no pedal hillclimbing grade @ whatever speed, is meant to measure the electric motor's performance, but the idea behind the 20 minute/km/ or something test was to get a good idea of how the bike works out IRL, that is to say the run was intended to be done however the said bike is normally used. That is to say: With or without pedaling, on the flats with no stops, throwing it around hills, urban warrior, etc... So that checking specs and stuff of several bikes should end up giving a good idea how well a given setup would work out in the kinda use a person intends for it.
For example Bike de merde worked out pretty well for me, but make it 1/2 the weight, say with battery capacity adjusted for equal range, then top speed would have been similar with a somewhat better average speed. Now if you put a fat dude who don't pedal on same bike, I surmise he would have thought the bike was blowfull, wh/km shooting through the roof & speed would have been a good deal slower. In the same line of thought, I only twice went through the battery in summer, when I first assembled it the batteries were at 12.4v but of course I went to ride it anyways... The other time what I did is checked no-pedaling range before it was modified, and it gave me 50kms with a top speed slightly faster then 25km/h. Once modified for more amps, it would (pretty quickly) reach a high value of 32 and really rip up hills, but then peukert kicked me in the balls. Once in it's intended element, with very fat and aggressive studded tires, then it would give me about 15-20 kms range at full throttle, & that's with a good pedal to it.
And yeah, rider's specs are of course important, I didn't specify it because it seemed obvious, but I surely would expect people to have at least a pretty good description of their bikes, like the type of motor, maybe top speed, bike's weight & other stuff along those lines, and something similar for the rider, what kinda riding they do, did they just get back into cycling or have they been at it for years? And where do they ride, etc...
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