Recorded a video on Haibike HardFour, one of the few kids' ebikes out there. With some upgrades (as always)!
Err, Bosch is terrible to pedal. Don't take my word for it, here's what Bosch themselves say about the crank:Dude, I have a Bosch and pedal it without power just fine!
(Emphasis mine). Later, Bosch mentions that:For 2018 the Bosch Active Line gets re-worked, with a new motor designed to deliver moderately dosed support for riders. The new motor design has reduced the overall size by 25% by going back to a big sprocket externally compared to being internally geared.
This allows less resistance and brings the size of the unit down for better integration.
So Bosch themselves acknowledge that there's more resistance on a small crank. Of course, they are talking about electrical operation, but on mechanical, it's even worse. On a Rohloff, with a 27kg bike, that problem is compounded even more.The motor noise and resistance are also significantly reduced too, due to the new gearing set-up.