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Old 02-07-2011, 06:52 PM   #1
sazfone
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Default jr 9503 throttle mixes

I have a 50cc gas plane and I want to program a low idle mix and a higher idle for flying.
This is on a a JR 9503. Do I set up throttle curves or what? Please let me know
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Old 02-07-2011, 06:55 PM   #2
jamesrxx951
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Default Re: jr 9503 throttle mixes

i think i tried this with my 9303. i mixed throttle to a switch. i didn't keep it though. if the motor is tuned correctly you shouldn't need it. or just hit up 2 click on throttle trim for flying and hit 2 down for landing. tried that to.
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Old 02-07-2011, 07:18 PM   #3
Tankd
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Default Re: jr 9503 throttle mixes

I set up the gear for the high idle. For position 1, its normal, then for a higher idle, flip the switch to position 0 and it increases. The pictures should help the way I did it. Don't know if it's really correct, but it works!
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Old 02-08-2011, 11:26 AM   #4
FrankFuss
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Default Re: jr 9503 throttle mixes

Tankd's pics show the correct THRO CURV setup if you want one throttle cure with a high idle, except that I set Point-3 on both curves to about 25% and EXP to ON. On the gas engine the first part of the throttle opening will result in a much greater RPM change than the last part. The throttle curve should map the throttle stick position closer to the actual RPM/Thrust that results. Record your maximum RPM and set the Point-3 percentage so that you get about half the maximum RPM at the mid stick position.
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Last edited by FrankFuss; 02-08-2011 at 11:45 AM.
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Old 02-08-2011, 08:16 PM   #5
sazfone
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Default Re: jr 9503 throttle mixes

Quote: Originally Posted by Tankd
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I set up the gear for the high idle. For position 1, its normal, then for a higher idle, flip the switch to position 0 and it increases. The pictures should help the way I did it. Don't know if it's really correct, but it works!
Thanks for the info, I'm trying it on Thursday. By the way, not to rub it in, but is it too cold to fly in Texas? Socal is in the 70's and the air is calm.
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Old 02-08-2011, 09:32 PM   #6
Tankd
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Default Re: jr 9503 throttle mixes

This year has been kinda strange. This pic was from last week ice-a-rama.. Any other time, it's in the air. Should have made skis..

Quote: Originally Posted by sazfone
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Thanks for the info, I'm trying it on Thursday. By the way, not to rub it in, but is it too cold to fly in Texas? Socal is in the 70's and the air is calm.
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Old 02-10-2011, 08:13 PM   #7
sazfone
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Default Re: jr 9503 throttle mixes

Nice Texas snow shot! The throttle mix idea was perfect, thanks. I used it today and didn't have to worry about it dying out on final or creeping on the ground.
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Old 10-10-2011, 01:32 AM   #8
fearonlygod
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how do i put in mixes on my jr9503
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