Frank Day Posted May 7, 2022 Share Posted May 7, 2022 Relatively new to EDF and am having trouble getting the throttle to work correctly. Only operates in final 1/3rd of stick movement and not at full power. I did run it up on a servo tester and it gives full beans. I also have a Freewing Lippisch EDF and I resolved this using the throttle trim switch to lower it until it ran. Only this time I havent managed to sort it. I'm certain I'm missing something in the setup. Using a Spektrum NX8 and using Spektrum RX AR637T, motor and esc are Freewing Your advice is most welcome Quote Link to comment Share on other sites More sharing options...
J D 8 Posted May 8, 2022 Share Posted May 8, 2022 Sounds like you need to match your ESC to the throttle stick movement. 2 Quote Link to comment Share on other sites More sharing options...
Brian Cooper Posted May 8, 2022 Share Posted May 8, 2022 The ESC needs to be reprogrammed. If it refuses to co-operate, fit a new one. 1 Quote Link to comment Share on other sites More sharing options...
EvilC57 Posted May 8, 2022 Share Posted May 8, 2022 (edited) Sounds like you need to do a throttle calibration on the ESC. For most ESCs you need to set the throttle stick on the transmitter to wide open (100%), then power up the model and wait for a couple of beeps from the ESC before closing the throttle. This tells the speed controller what PWM pulse widths to expect from the receiver as the top & bottom ends of throttle. Check on your Tx as well by using the channel monitor in the menu, that the throttle is moving between 0% and 100% as you move the stick up and down, and that you haven’t got any strange throttle curves programmed in. Edited May 8, 2022 by EvilC57 1 Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted May 8, 2022 Share Posted May 8, 2022 Before you go through the ESC calibration, check on the servo monitor that the throttle channel is also working correctly. 1 Quote Link to comment Share on other sites More sharing options...
Frank Day Posted May 8, 2022 Author Share Posted May 8, 2022 Thanks guys, Had another play. Throttle trim all the way up, turn on TX, stick up, two beeps, stick down two beeps and cell count, disconnect - reconnect. sorted. Strange that my Freewing Lippisch has the trim down! Thanks again. 2 Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted May 8, 2022 Share Posted May 8, 2022 To be exact setting the throttle range is not an EDF paculiarity but it applies to any ESC that does not have an "auto throttle range" capability. Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted May 8, 2022 Share Posted May 8, 2022 4 hours ago, Frank Day said: Thanks guys, Had another play. Throttle trim all the way up, turn on TX, stick up, two beeps, stick down two beeps and cell count, disconnect - reconnect. sorted. Strange that my Freewing Lippisch has the trim down! Thanks again. Did you try it with trim down, or at mid position? When calibrating ESCs in the manner you describe, I've never had to do anything to the trim -- just left it at mid point. The ESC records what the top and bottom values are, and calibrates accordingly. Quote Link to comment Share on other sites More sharing options...
Frank Day Posted May 8, 2022 Author Share Posted May 8, 2022 Hi, Was a pain, I tried everything else then read something about trimming the throttle up but that didnt work initially so I turned the TX off and restarted leaving the trim fully up, then moved stick fully up after two beeps then fully down for two beeps. Turned it all off and restarted, works perfectly. I also looked at my Freewing lippisch, it had previously been on my DX8. Bound it to the NX8 same issue, followed same route worked first time. May have been me or something with the Freewing esc's. Quote Link to comment Share on other sites More sharing options...
Frank Day Posted May 8, 2022 Author Share Posted May 8, 2022 Missed a bit, apparently it may be an EDF thing Quote Link to comment Share on other sites More sharing options...
EvilC57 Posted May 9, 2022 Share Posted May 9, 2022 All speed controllers are different. I have some which won’t arm if I’ve accidentally left the throttle kill switch in the ‘kill’ position on the Tx when powering the model up, and some that aren’t bothered and arm anyway. Quote Link to comment Share on other sites More sharing options...
Frank Day Posted May 10, 2022 Author Share Posted May 10, 2022 Bit odd, I've used the same brand esc on prop models and they've worked straight off the bat, so rightly or wrongly I'm guessing with no actual standard it becomes Forest Gumps box of chocolates. Quote Link to comment Share on other sites More sharing options...
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