UPDATE:
Testing by the shop reportedly showed none of my issues. So I then sent the ESC and one of my HPI Flux Pros direct to SMD Ltd, in the hope of getting to the bottom of this. ...SMD returned it to me a couple days later with a note saying:
Quote:
|
Tested and no fault found. Speed controller performance is as per manufacturer's specification throughout throttle range. Occasional sensor positioning/monitoring can cause a motor to spin on initial start up allowing for the self-calibration of the esc and does not affect performance.
|
No specific mention about the motor speed step changes and stop/start on constant throttle I had described (and video'd).
So at my local club last Sunday we all had a look at it running on a different radio system, and we all witnessed the same erratic (non-commanded) behaviour as described earlier in this thread. (As an aside, the ESC would not run at all when connected to a colleague's Intellect saddles - it reported low voltage, ie. <6.4V, when they metered at ~7.5V).
The spinning-up at power-on as previously described appears to (possibly) be related to enabling throttle failsafe in my Futaba system. But, as expected, this never causes such an issue in my LRP SXX v2 Competition or Orion Vortex R10 ESCs.
This video demonstrates the erratic running, ie. step-changes in speed and the sudden burst of high speed (@ 37s). Note: I have used the throttle sub trim in this video to prove constant throttle, but behaviour is identical in normal use and when running in a buggy.
Click the picture to see the video on Photobucket
Presently waiting/hoping for a reply from LRP.
Obviously this unit is simply unusable for me. So the question is, if there's nothing wrong with this LRP Flow, then what is wrong with it....??
Cheers
Jason
Note: It does this with HPI Flux Pro motors, a Speed Passion motor (seen in this video, connected by 4mm plugs - hence the temp electrical insulation), multiple sensor wires, and different radio systems. All of which are proven/verified components.