Recent content by joaquín

Hello there, we are developing a system to reed the controllers information between the bike and controller. So we want to reed the motor power, current, speed, battery voltage etc. Che have been checking and there seems to be lot of different controllers protocols. There is the ones that...

Hi, I tried to be as specific as possible in the title. This is my problem, I work for an small neighbor and we bought 10 e bikes from a quite professional builder at china. When they sent the sample with bafang hub motor it worked great. Then to make it a little cheaper we decided to use a...

Ok, but this is the deal, I have got a rear hub motor with integrated torque sensor and with pas sensor at the crank, and of course de controller that fits it, and it has a huge difference with the bikes that just use PAS sensor. No I´m looking to switch into a front motor, because I´m 2m tall...

Hi, how are you? I have been checking around about this Bafanga sensor, http://www.szbaf.com/en/components/component/sensor/sr-pa2132st.html And I couldn't finde anything about it, no brand using it or any single person talking about it. Has some one try it? Do any one knows if any brand or...

Hi, I´m building a case for my battery, and now I´m choosing the connectors so I don´t have to send the wires into the case. My bike has a 250W geared motor with torque sensor. For the signal cables is ok, there is full of connectors for that. But, what about the motor wires? It has 5 wires...

Yes, I was thinking about something like that, but it bring me to another question, when I make the motor spin and get a close look at the crowns I see like it moves a lot, but a movement like a wave, it is like the crowns (same for one speed than for 6 speed) are not exactly perpendicular. Do I...

Hi, thanks for your answer, now I´ve discover what the problem was. Results that the single speed crown was to width, so it tuchs the torque sensor (which is the hub thread and a little ring around it) and a part of the motor too, so when I pedal the crown gots tight and the torque sensor was...

Hi, I´m having a problem with my hub motor kit conversion, it works with a torque sensor inside the motor, and works great when I use the 6 speed, but when I change it to single speed the torque sensor just acts like crazy and the motor is always pushing, do any one knows why would it be? Regards

I think so, it is like motor on this bike:

Sure, I was forgotten about the 9 speed, single speed is the idea. An I´m thinking about if use an old steel frame or re build with new and stronger steel tubes and copy the bike frame shape.

I´m thinking to use an Etek motor, I have seen some conversions from bikes with this motor, but because of it power I thought about hubs and frame resistance. Do you think is too much power for a bike frame?

So a bike frame should be ok for a 2KW motor? I would like to see your conversions if you have pictures, and thanks for your answers.

And about the frame? Does it matter if it is of Aluminium or steel? Which would be better? Regards

Hi, I´m new at the forum, I´m developing my new mid drive electric bike, and I have got this question about the hubs, if I use a heavy mid drive motor, with big battery pack, plus my weight and controller and stuff, should´t I change my bike hubs, spokes and rim for stronger ones? I would like...