Search results for query: hub motor vs crank

You can use as much power as you want with a 250w motor, but if you have a motor that's rated at more than 250w, it's illegal no matter how much power you restrict it to. To see if you're legal, look at the motor and see what's written on it. If it says 250w, you're home and dry. Anything else...

I have set up a kit to be street legal in the UK with appropriate settings in the controller but is it legal? When I started the display showed the motor getting nearly 500 watts. The control panel died after 10-20 minutes use but would reset by switching the battery off and on. Fortunately...

It's 14S.

The battery on that video is 4S2P 302WH - with a motor driving the rear wheel directly? I can't see it compete with a normal £300 crank drive motor even if money is no object.

Thanks for explaining the wiring, anyway there is no extra 3 wires. By the 3 wires beside the terminal connector was meaning 3 thick phase power wires. I just double checked the controller/motor wiring and there is 5 wires (black, blue, yellow, red and green) on terminal and 3 phase wires, so...

any thinner data wires Not the 2 x thicker gauge power wires from a battery to a controller would indicate a requirement for a battery /controller handshake similar to but infinitely more problematic than any display issues. Motors generally have 9x connections 3 x thicker phase power wires(...

The bike is a fairly standard hybrid bike with 26" wheels and an 8 gear cassette. I made a mistake in the thread title it's a cargo trailer not a proper cargo bike with small wheels. Before I attach the motor I'm going to test the trailer fully loaded with new brake pads. If I'm not happy in...

Yes to both, ( unless your bike has a perculiar BB and crank) BUT...... fwiw i upgraded my 7speed rear cassette to 8 speed when converting my bike, not a lot of hassle at the wheel end but the replacement 8 speed gear changer is a LOT stiffer than the original 7 speed, and i dont use the...

The typical cheap hub-motors last virtually forever. IIRC, they test them to 30,000 km at Bafang. Like many crank-motors, they can fail early due to abuse and/or external circumstances. I like to test things, so I do change my bikes and motors regularly. My Q128 has done about 6,000 miles. I did...

Well, I'm all for cycling and getting good exercise, but there is much to say in favour of electrification of the sort most of us here enjoy, as an assistance for older people, or for the younger person who wants to commute ten miles to work, but doesn't want to arrive in a sweat, and then have...

What would be handy to know is mileage life expectancy on various bikes. For example, your 20-30,000 miles on hub motor bikes: how many miles on a single bike is more useful to know. I remember reading, and memory might be flawed, of a requirement to replace hub motor bearings after each...

As far as I'm concerned assisted cycling is a failed concept, so they are all bad. That's why despite contact with the subject through my cycling life, I didn't buy one until I was nearly 70, only to confirm I didn't really like them anyway, crank or hub motor. My best advice is to cycle on...

Funnily enough I never broke one of those. Maybe I was lucky. They do go out of adjustment now and again though, although I can't see why, but they do. I rode an SRF3 for 4000 miles on a fake Chinese alu Bromton, and I stripped the hub to look at it after finding some bearing cones needed...

Until you try to put 80NM from a modern crank motor through thrm. Only three ratios in them sucks too, which is the main reason nobody wanted them. Also, you forgot the bit about whenever you fell off your bike, you smashed the little shift chain thing and thereafter got stuck in top gear until...

As long as they are properly adjusted, they work extremely well. Perhaps in the context described here though, they might be more finicky than what is described. On this two gear bike, I have no idea how that kick back mechanism works at the component level though. The freewheel pawls must be...

I was referring to my RadRunner-Plus previously, with Rad’s regular Bafang hub motor, plus EggRider maxed at 19A. I believe Rad uses the same motor in all markets, just software limited according to local regs. I’m aware of the changes that can be made to motor characteristics with different...

Which motor do you have? What's its max speed? Mine doesn't suffer from that problem. It will power all the way up Ironbridge Gorge without pedalling if I want it to, and that's without running it at maximum power. Do you understand the affect of different motor windings on torque, efficiency...

All the electrical parts have serial numbers that you can read in the Bosch diagnostics. I'm pretty sure that there's a field in there for the bike's one two, but it's optional.

I have visited yesterday both of our Halfords branches, but none of the “Bike Experts” could explain the details about the serial numbers. One “expert” advised me to look on the underside of the bottom bracket/crank for the serial number, which begins with a letter combination like all “Carrera”...

Scenario 1 above. It doesn't need to know. Treat the controller and motor as a unit, and allow the controller to understand the performance curves of the motor. Then measuring input V and I (and of course rpm, sorry I left that out before) allows output power to be calculated with sufficient...