I don't find this at all. I built my e-bike by converting an old Univega touring bike with a 1300W EcoSpeed mid-drive. Even with a 670Wh battery it comes to l

I don't find this at all. I built my e-bike by converting an old Univega touring bike with a 1300W EcoSpeed mid-drive. Even with a 670Wh battery it comes to less than 10kg additional weight. As a touring bike, it was already built to carry a load, so the rims and tires are fine. The cantilever brakes are adequate; discs would be better, but the bike wasn't built for them. Top speed on level ground is about 28mph (45 km/h), which is a speed one could easily hit going downhill without a motor, so the bike is well within its intended performance envelope. I like this setup because it's still easy enough to pedal -- not like a racing bike, of course, but again, well within the amount of weight one might be carrying when touring -- and when I don't feel like pedaling, I don't have to.