4 ms·
That's a great hack. But I'm a big guy, bordering on 285lbs. That kind of low power traction doesn't seem enough to move me. I know European 250w motors are nev
by 8jef 5y ago
That's a great hack. But I'm a big guy, bordering on 285lbs. That kind of low power traction doesn't seem enough to move me. I know European 250w motors are never enough for me.
I've build my first ebike a few months ago. I went for a 1000w Bafang mid drive geared motor with a 48v 20a battery, on an old used Peugeot mountain bike. Adding some new/used bike parts (wheels, tires, chain and rear gear), total project cost arrived at C$1800, less than half the price of a new ebike with similar specs.
Considering my weight, 20 to 23 kph is my speed of choice in pedal assist mode, which is quite safe. It does extends my range a lot compared to other use cases.
- kylegordon 5y ago250W pushes my 220lbs fat ass along pretty swiftly edit: I wonder if we're experiencing the difference between 250W continuous rated motors, which is what the legislation covers, and 250W peak rated motors, which is what a lot of people end up incorrectly obtaining.
- 8jef 5y agoWell, there's probably something magical happening between 220lbs and 285lbs ;) ... and/or new motors perform better.
- derekp7 5y agoYour typical high output pedaling will produce about 100 watts of power, which for your weight will get you about 13 miles per hour. Pedaling hard with a 250 watt motor should get you around 23 mph.
- 8jef 5y agoOne can't argue with precise calculations. Then the whole point for me is limiting my output and go farther. One's mileage may vary!
- derekp7 5y ago> One can't argue with precise calculations. I would have rounded off, however the numbers change quite a bit with small changes (according to the random online bicycle wattage calculator I was using).