Recent content by walls99

Your motor windings look fine from the pic you posted, burned windings are easy to spot, see a "good" example here: https://endless-sphere.com/forums/viewtopic.php?f=28&t=58898&start=875#p1240836.

Testing the continuity of the coils is not going to be that helpful because the 3 windings are connected together, so they should test as shorted between any of the 3 phases. See: https://en.wikipedia.org/wiki/Brushless_DC_electric_motor#Variations_in_construction. It's unlikely the motor is...

Matt, I tried to send you a pm but looks like your inbox might be full

That would be great, I'm happy to cover shipping cost. Alternatively could you share high res picture of the unpotted one?

Hi, I'm looking for information about the Bafang BBS02 controller. Anyone knows if it uses trapezoidal or sinusoidal commutation? supports sensorless or FOC? real torque/phase current control or PWM/Speed only? any schematics around? Basically, I'm thinking about my next hobby project and...

pm sent

Hi Mark, I've just tried to send you a PM but it seems stuck in my outbox, is your inbox full? Cheers, Laurent

The controller version 2 with the minor mod is my final version for now. The Solar RC plane, it was designed for, is still under construction. I'm not planning to build/sell those but feel free to re-use the schematics see above and PM me if you need the firmware.

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You might want to consider a stronger mount and using the 4 screws to secure your motor, especially with current above 100A, this is a lot of torque to hold in place. I have a similar setup and here is what I had to do to secure everything:

Here is a brief description of how this works: - The MAX4372 is a current sense amplifier used to measure the solar input current (I_IN). - The solar input voltage (V_IN) and I_IN are regularly sampled at ~100Hz to calculate the solar input power (P_IN) - The MCP6401 is a rail-to-rail op amps...

Here is the schematics under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (http://creativecommons.org/licenses/by-nc-sa/3.0/).

The version 2 is finished and working, see picture below:

It's not a freewheel kit, just a stock wheel and bolts with a mini moto 68 teeth sprocket. To drilling the holes, I used the stock sprocket as stencil to mark the drilling location, you only have to center the sprocket correctly.

13/62 and 15/75 are pretty much the same. I kept the stock 15/75 setting on my goped when I had a Torkinator to have stronger acceleration but same top speed. If you want to increase the top speed at the cost of the acceleration, you just need a smaller rear sprocket. FYI, the cheapest way is...