PLEASE Help me with my zero throttle response on my radio!!! (Please read) - RC Groups
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Jun 14, 2002, 08:21 PM
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PLEASE Help me with my zero throttle response on my radio!!! (Please read)

O.K., I have a conversion American Airlines plane that I am builing. 2x EDF-50 in parallel, worked before, now zero throttle respones.


Bench Testing with ICS-50(Checked to see if it was toasted because of amp draw, not the problem, works on mini max with different radio)

Futaba 4channel Skysport Radio
T, E,R A:everything works except the throttle. I have zero response with the above radio, even after checking other crystals. I then tried Futaba radio in the mini max with the same ESC as above and again same response NO THROTTLE. Tried out my Hi-tec Focus III radio with same ESC in the mini max and it worked!! Then I tried one EDF-50 with Hitec 3 channel radio with same (ICS-50) ESC, and that worked perfect.
I then tested the Futaba Radio with the same ESC, in the same setup as the Focus III: No throttle response, but servo control is good. I had both motors working fine earlier, and then ran out of battery power, thought that I burned up the ESC, but it still works.

Is it possible to damage the radio in any way?? I tried another servo on the rudder/Throttle stick on the Futaba radio, and again no throttle, but rudder control worked.

I am running out of possibilities, please help me because I don't have to tools or the experience neccessary to figure this out on my own.

Thank you for your help,

Michael Arnoult
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Jun 14, 2002, 08:28 PM
Leave me alone!
Martin Hunter's Avatar
I'm not familiar with that specific ESC, but I know some will not give you throttle if you happen to have the stick anywhere above cutoff when you give it power. Try moving your throttle trim and stick right down to the bottom and then give it power. The other option is that you have inadvertently reversed your throttle direction on your radio. Check that too.
Jun 14, 2002, 08:52 PM
Registered User

I Fixed it!!!

I am not sure what I did, or how, but it works. I did try the servo reverser and set the trim bottomed out. It works now.

What a relief and about 2 hours of stressing that I broke it.


Thanks for your help

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