Need help, unable to reach full thrust on K310
10-16-2018, 06:12 PM
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Need help, unable to reach full thrust on K310
Hi all,
I installed a K310 on a test bench. I use a Turnigy servo tester as a throttle. The GSU and servo tester are approximately 3ft away from the ECU. I replaced the battery cables with thicker gauge, when connected the voltage reading on the touchscreen match the actual battery voltage.
I went through the 'learn RC' procedure. After that, when I turn the tester knob, the screen indicates idle and then the thust (throttle) percentage depending on the knob position.
However, when turning the servo tester to the full RPM position, I only get 83 percent indicated throttle on the screen instead of the expected 100. I replaced the servo wires (servo tester to ECU and ECU to GSU) with bigger gauge wires but it doesn't help.
Note that I made these tests without connecting the engine to the ECU. It should not be important since the signal from the throttle to the ECU is the only issue here it seems. Since there's no drop in voltage, the signal from the servo tester to the ECU must be the problem.
I think about using a booster extension cable, after the servo cable, before the ECU. Also maybe a second to the GSU screen. What do you think?
Any help or comments are appreciated.
I installed a K310 on a test bench. I use a Turnigy servo tester as a throttle. The GSU and servo tester are approximately 3ft away from the ECU. I replaced the battery cables with thicker gauge, when connected the voltage reading on the touchscreen match the actual battery voltage.
I went through the 'learn RC' procedure. After that, when I turn the tester knob, the screen indicates idle and then the thust (throttle) percentage depending on the knob position.
However, when turning the servo tester to the full RPM position, I only get 83 percent indicated throttle on the screen instead of the expected 100. I replaced the servo wires (servo tester to ECU and ECU to GSU) with bigger gauge wires but it doesn't help.
Note that I made these tests without connecting the engine to the ECU. It should not be important since the signal from the throttle to the ECU is the only issue here it seems. Since there's no drop in voltage, the signal from the servo tester to the ECU must be the problem.
I think about using a booster extension cable, after the servo cable, before the ECU. Also maybe a second to the GSU screen. What do you think?
Any help or comments are appreciated.
10-17-2018, 04:27 AM
#2
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K310
Hi, You might want to check on the turnigy servo tester. I had a couple of those tester not being accurate. I used one to set up the elevator on my jet with the jr 8711 and it was twitching like crazy, but it was fine when I had it on a receiver. Hope this help.
10-17-2018, 05:09 AM
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Thanks for your replies
The servo tester was working fine until I connected it to the ECU using several extension cables instead of the the standard 6' servo cable. The indicated thrust setting on the display accurately matched the knob position without a problem.
Also, I'm unable to use a 'standard' RC setup, the throttle needs to be mounted on the same mounting plate as the GSU. Maybe could you recommend me another servo tester?
The servo tester was working fine until I connected it to the ECU using several extension cables instead of the the standard 6' servo cable. The indicated thrust setting on the display accurately matched the knob position without a problem.
Also, I'm unable to use a 'standard' RC setup, the throttle needs to be mounted on the same mounting plate as the GSU. Maybe could you recommend me another servo tester?
