Earlier quoted context omitted.
> The more useful case ime is turning cyclists with reduced mobility into regular cyclists. That's exactly my use case. I've got a bad leg and this thing made all the difference for longer rides.
I am impressed by your solution and I took have at least one bad leg. I have decided against batteries in favour of a basic bike that I can park anywhere and carry up stairs. I want the little and often mobility with a few longer rides over summer. I also have a neighbour in his late seventies that rides 'naturally aspirated' with a buddy that is two years older. His buddy has an ebike and he is giving it a couple of…
Be careful with what you've got... I wish every day that I could do the day I messed up my leg again without making that particular mistake. I rode a low racer recumbent at speed and had a nasty case of leg suck when hitting a (new to me) speedbump.