Originally Posted by BigDaddyT

Sure thing - Unfortunately, I can't get into the exact details of how to do this stuff too much. In my opinion, these mods make the dyno a much more valid diagnostic machine:

5.0v / 7.0v Switch - Added ability to drive motors at 7V. Some theorists will argue that this is not necessary because electric motor performance has a fairly linear relationship to voltage but I found this was very important on my CE TurboDyno, so I added the functionality.

Software Calibration - The Fantom dyno has been accused of being "inaccurate" in the past. In reality, the dyno itself is pretty accurate at measuring the RPM and amp draw of the motor, but the interpretation of the data is subject to how the software wants to smooth it out and plot it and so forth. I calibrated my profiles against a Robitronic dyno to ensure validity against another standard. It still reads lower wattage compared to a load dyno but that it more because the mechanism is totally different. My plotting software also does minimal curve smoothing and adjustment so the plotted data looks closer to what came off the dyno. Not as pretty, but theoretically more accurate.

External Driver Mode - This is still a work in progress, but I am adding the ability to run the dyno in more of a slave mode where an external ESC is used to drive the motor being tested, and the software automatically responds when data arrives. The idea here is to be able to test brushless systems where the controller is an integral part of the equation.

That's about it - the system as it comes from Fantom is very usable for basic motor tuning. For my production environment, I needed to run at 7v and be able to customize the output and printing a good deal for my packaging, so I took on the extra projects to really tweak it for what I am doing here.


T