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Thanks Mike. I'm still not sure.In serial, the current per phase is 2.1A with an inductance of 8.8mH.In parallel, the current per phase is 4.2A with an inductance of 2.2mH.The Gecko provides 3.5A. The power supply is rated 48V, 12.5A.Now, I believe those currents are a bit bogus. The RMS values are about 70% of that. (1.47 for serial, 2.94 for parallel).With 4 motors running, it looks like either way the 12.5A power supply will do.A bit more concerning is the inductance. Gecko documentation shows the equation 32 * sqrt(inductance) = power supply voltage.2.2mH gives 47.5V (which is within the power supply).8.8mh gives 94.9V (which is twice the power supply).It's been many many years since I've played in this arena so I'm not sure about anything.Whether serial or parallel, the same 4 motor leads are used with the only difference being how the other 4 motor leads are connected and they can be connected at the motor.So I can try both ways easily enough. I just don't want to blow the driver.BTW the colors of the motor leads mean nothing. Need to go by where the wires are connected to the motor.
The Gecko information is pretty good but I can't find a downloadable version of their manual. I can only read the data online.
I found the attached on the Gecko site. It came up as a *.pdf and I saved it from that.Quote from: zeeprogrammer on February 21, 2020, 12:34:35 PMThe Gecko information is pretty good but I can't find a downloadable version of their manual. I can only read the data online.
As for the finger treadle project, I've been collecting/cutting the metal for it but the flywheel (due to its size) will be a problem.
Quote from: zeeprogrammer on February 21, 2020, 12:34:35 PMAs for the finger treadle project, I've been collecting/cutting the metal for it but the flywheel (due to its size) will be a problem.Do you mean the diameter is too large to turn or the flat area too big to mill spokes on the milling machine as X & Y travel not enough?