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Home✈️Aircraft🚁HelicopterAlignT-REX 600N › Throttle setup
08-20-2008 11:51 PM  12 years ago
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ptzn

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Throttle setup
I have just installed multigov pro governor on my heli. How do you guys setup and run your heli in normal mode? With a linear throttle curve 0 25 50 75 100 during setup, how to keep the engine running at idle with the throttle lever at lowest position? Is it possible, or I have to re-adjust the throttle curve again once I have completed the governor setup or start the heli with slightly up throttle.
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08-21-2008 12:13 AM  12 years ago
Pilot_DMan

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what kind of radio? you're suppose to use the throtle trim
sorry if i am misunderstanding your ?????????
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08-21-2008 02:31 AM  12 years ago
majestic12

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Avon, CO

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I try to get 0,50,100 with a purely mechanical setup to line up with idle, hover and full open without messing with end points or travel adjustment...just match the length of your servo arm to the length of the throttle control arm and with a 90degree setup it should be golden. Depending on your radio you set the kill switch(futaba) or in the case of the Jr/DX7 you program a mix so when you flip the gear switch it drops the throttle to kill the engine. Having it as a mix lets you keep a linear 0,50,100 curve. you could set it up so that 0 on the curve kills the engine but then you have to mess with trims for an idle and in reality you don't end up with a true 0,25,50,75,100 curve. govs like a linear 0 to 100 curve the best where 0 is the idle
TREX 700N Flybarless
HF:STMPNGRND
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08-21-2008 07:22 AM  12 years ago
ptzn

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My tx is Futaba 7CHP. During mechanical setup,I get equal travel between 0 to 50 and 50 to 100. With 50 on the curve, throttle stick is at middle. So at 0 on the curve, my OS50 engine throttle arm is fully closed. With multigov pro, to set idle, do you position the throttle stick slightly up so that you can assume the engine will run at idle.
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08-21-2008 05:10 PM  12 years ago
Simmer

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Massachusetts

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I setup the Throttle range with my throttle trim in the middle range.

With the trim closed down the engine is shut down, at mid position the idle is about right for your purpose.

When adjusting the throttle range 0-50-100 I start (my zero) with the throttle trim mid position, not closed down.

Hope this helps
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08-21-2008 05:35 PM  12 years ago
majestic12

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Avon, CO

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if you cant get 0=idle , 50=hover and 100=wide open mechanically...
I would suggest using the travel adjust to get the idle at 0 on the pitch curve. You really don't want 0 on the curve to kill the engine.

TREX 700N Flybarless
HF:STMPNGRND
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08-21-2008 10:06 PM  12 years ago
Pilot_DMan

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Vallejo, CA

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your throtle curve is correct, but when you set your fully close position your throtle sub trim and stick (not the sub trim in menu the one next to the stick)should be all the way down. when you're starting the engine you should start putting the throtle sub trim at 1/4 then start going up a couple of notches up until it fires up and maintains idle..you shouldn't have to move the throtle stick up to start or maintain idle..and to shut the engine off move your sub trim all the way down..
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08-22-2008 01:15 PM  12 years ago
ptzn

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Now, I understand better. On Futaba radio, there is a term called ATL, Adjustable Travel Limit where makes channel 3 throttle trim effective only at low throttle. Fyi, this is my first nitro heli although I have fly electric for quite some times.
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08-22-2008 02:02 PM  12 years ago
Simmer

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Massachusetts

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trim effective only at low throttle.

correct. On JR same way. so if your flying around at any throttle position, and move the trim pot on the transmitter, it will not effect the throttle arm at all.
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08-22-2008 02:29 PM  12 years ago
floop

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Southern, NJ

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To set throttle travel I usually:

1. Set the throttle trim all the way down and make sure throttle curve is 0 - 50 - 100
2. Use ATV in the radio to set High and Low throttle to be maximum travel
3. If ATV is off too far I adjust the mechanical linkage by moving the throttle arm.
4. When finished move the throttle trim to the middle. This usually gives a good idle position or start point with the initial throttle curve at 0.

Hope this helps.
IT's what I do.
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08-22-2008 05:54 PM  12 years ago
Pilot_DMan

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Vallejo, CA

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and make sure your ATV throtle is at minimum of 100% for the gov to work properly atleast that's what the ATG, REV MAX, AND CSM gov's requires.. adjust your linkage and horn position. make sure you're not stressing the servo and the carb.. have fun with your first nitro
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