Recent content by MomentumUpstart

Ok, its sounding like hub motors will always have a narrow rpm window of efficiency and will not have even assistance over a wide range of rpm ie good for both light and heavy pedalling. Is that true?

Why isnt changing the rear hub motor to a higher rpm version (or increasing the volts) the same as changing the gearing on a bicycle with a crank drive motor? Currently as soon I start to pedal with some effort the power assistance reduces greatly and it feels like I put in heaps of effort but...

Thanks for the post. I am still to learn about the crank drive motor. The price of them here was what made me choose the rear hub motor. I was just looking for best value to commute 20 miles to work. The simplicity of the rear hub motor attracts me also. I also do mountain biking and I...

Thanks, in your scenario with plenty of amps then extra gearing helps get more speed. But i think in my case I am limited by amps so lower gearing wont help me. I changed from 26x2.5 tyres to 26x1.1 tyres and Im still review stats to see if it was any faster. All I know for sure is that my...

Thanks, that makes perfect sense now. Im finally learning something! What tyres are you running? If I did raise the current by adding some solder to the shunt or purchasing a 12 mosfet controller how can I read the amps? And are there any basic ways to see if the battery is not coping? I...

It would be awesome if I could run a constant 20A and have no increases for hills or extra load, is this possible?

Thanks, so bms current is what the battery can apply constantly and it can apply more for short periods of time for a hill etc? I would be happy with 24mph and am not very keen on buying another battery yet as it is a custom size to fit the inside of the bottom tube. From Alan Quays post...

What do you think about a KU93 controller to bump up the current to 22A?

Im confused if yours is 270rpm and mines supposed to be 300/310rpm and my noload speed is 24mph. Shouldnt yours have a lower noload speed? I didnt think it was possible to go over the noload rpm/speed. Is it correct that more current will help increase speed as close as possible to the noload...

Thanks for the reply. Is yours code 10 and on 26" wheels? How can I tell how much current the battery can deliver? So to go above 24mph I would need to increase voltage which would require a new 48V battery.

Hi, I have the following setup on a 26" mountain bike that was put together by a local company here in Australia. It is marketed as an offroad bike as it has large downhill style front shocks and wide 2.5" knobby tyres. The only way they can sell a bike with over 250W is to say it is offroad...

Yeah I agree that a wider smooth tyre would provide more grip and be safer. Interesting to see they arent that much slower. So they are slower to get to the speed but they can hold on to the speed as well as thinner tyres? Comfort is secondary to speed for me. Lots of those articles keep...

Thanks for so much great info! I personally feel much safer and faster on thin smooth road bike tyres than wide knobby mountain bike tyres (on a smooth surface).

Reducing safety with thinner smooth tyres on smooth ashpalt compared to knobby mt bike tyres?? I may be new to ebikes but im not new to bicycles.

That news about code 10 made me happy in the pants!!! Anyway I can reduce the "back EMF from the motor"? Or bump up the amps?