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HelicopterRadio - Servo - Gyro - Gov - Batt › AAKK! I can't set up my throttle servo!
10-22-2004 05:04 AM  13 years agoPost 1
Comanche Man

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Hey, I need some help, I have a 9303 jr radio, working with a futaba 9253 on throttle and a throttle jockey pro. In the throttle jockey pro it says that I need the atv's to be right around a hundred percent for the throttle servo. And I can't seem to get The carb all the way open and the carb all the way shut with those settings, Servo horn is 14 mm out. I don't know what I am doing wrong, could it be the lenth of the connecting rod or the siz of horn that I am using, I can get both of them when the atv is like 140 percent on both, but the carb horn and the servo horn aren't parrallel, is having them parallel really necessary, please help me I have been working on this for like two hours. The sub trim is like way off too. Thanks for your replies

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10-22-2004 05:08 AM  13 years agoPost 2
Comanche Man

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Is it more important that they are 100% or that the servo atv's are even, I got it to work with about 130% atv, or should I just put a longer horn on it?

Please help

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10-22-2004 06:06 AM  13 years agoPost 3
Comanche Man

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I got it set up correctly with a sixteen millimeter hole and about 91 and 90% throttle atv, is this ok?

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10-22-2004 06:09 AM  13 years agoPost 4
gwallace1

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Susanville, CA

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I belive it is more important that they are at least 100% and equal for initializing only. The same for the channel you are using (if you are) for Aux. Once it initialized I changed the ATV's and tached to set the headspeed. It works great.

Greg

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10-22-2004 10:27 AM  13 years agoPost 5
Drunk Monk

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Preston, UK

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I really wouldn't worry about it being parrallel, bear in mind the speed of the 9253, 0.08 sec, it really isn't going to have a problem.

90% might be close enough. If you can calibrate the TJ-Pro then you will be fine


Stephen

I only open my mouth to change feet.....

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10-22-2004 10:52 AM  13 years agoPost 6
Al Magaloff

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Getting them parallel is easy. Just loosen the throttle arm on the carb, and turn it wher you want it. The servo arm should be 90º to the servo boby, at half stick 0º. Adjust the rod's length to be the same as the center to center dimension of the servo arm retaining screw and the carb arm's retaining screw. The TJ looks at the 100% figure during calibration, to choose the 25% engagement point. Having an ATV of 90, will just lower the engagement point slightly. Many times on the throttle, you will need a servo wheel instead of an arm, so you can drill the hole where you want it.

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10-22-2004 06:30 PM  13 years agoPost 7
Comanche Man

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if you can calibrate the throttle jockey then you will be fine
What do you mean by that, if I don't have the atv's close enough then it won't calibrate it right? Does the headspeed have to hit the targeted range before the throttle jockey will engage?

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10-22-2004 06:34 PM  13 years agoPost 8
Comanche Man

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sorry for soo many questions, because with the old servo, it didn't feel like it was engaging sometimes it would be like 1650 in the hover, and suddenly jump to the targeted range, and it certainly didn't start engaging at 25% throttle?

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10-22-2004 06:37 PM  13 years agoPost 9
Drunk Monk

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Preston, UK

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If the atv's are too low you won't be able to calibrate the tj, the light won't come on or off so you know it's not working. Also, as Al said, if the atv's are lower than 100% then the 25% throttle stick position used to activate the tj might change to 20% stick position. Not a problem in any case.


Stephen

I only open my mouth to change feet.....

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10-22-2004 06:40 PM  13 years agoPost 10
Comanche Man

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I think that I am missing something here, people say that it starts to engage at 25%, but you hit that really early on and the last time I had it set up, I would think that It would jerk on takeoff, which it didn't do and even sometimes in hover the tj wouldn't govern, do you need to hit the targeted headspeed before the throttle jockey will engage?

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10-22-2004 06:47 PM  13 years agoPost 11
Drunk Monk

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Preston, UK

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I seem to remember you need to be with 5%? of the target headspeed before it kicks in


Stephen

I only open my mouth to change feet.....

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10-22-2004 07:31 PM  13 years agoPost 12
Comanche Man

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okay, now I have a new problem, my 9253 servo is glitching, moves to the right about ten degrees and then back real quick, unplugged it and up it in the reciever directly and it went away, this happened before with my 811 servo that used to be my throttle servo, and hasn't happened since, turned the reciever off and then on again and it went away, only at idle this happened, what do ya think?

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10-22-2004 07:43 PM  13 years agoPost 13
FAA

rrApprentice

MIlford CT

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First off - Comanche is a DEAD PROGRAM ! Get a new handle dude !

Second - And to the the topic: Try plugging the throttle servo directly to the Rx. Verify that the glitching is not part of the TJ pro. If glitching goes away you know where the problem is. TJ pro.

If not, try another servo. Make sure the Rx channel is good. If the other servo works, you know the issue is with the servo. If the problem persists, the issue is with the Rx.

Do these last steps WITHOUT the TJ Pro plugged in.

I hope this helps

Nick

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10-22-2004 08:09 PM  13 years agoPost 14
Comanche Man

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if you read my post you would have seen that yes it has happened with two different servo's, and I have plugged it in directly to the reciever

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10-22-2004 08:12 PM  13 years agoPost 15
rappyripper

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Decatur Alabama and​Suzhou China

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TJ is in superservo mode with regular servo connected.

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10-22-2004 08:28 PM  13 years agoPost 16
Comanche Man

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no, it isn't in superservo mode, and a 9253 servo is not a regular servo

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10-22-2004 08:29 PM  13 years agoPost 17
Comanche Man

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would it happen with a super servo in tj's regular servo mode?

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10-23-2004 12:38 AM  13 years agoPost 18
Al Magaloff

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I would get the helicopter set-up right to begin with. The TJ is not going to fix a bad set-up. Ultimately, you will blame the TJ, which is not fair. There is some really basic groundwork that needs to be learned during the learning curve. Skipping steps doesn't always work out well.

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10-23-2004 01:52 AM  13 years agoPost 19
Comanche Man

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what are you talking about?

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10-23-2004 05:48 AM  13 years agoPost 20
Al Magaloff

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What am I talking about?................." sorry for soo many questions, because with the old servo, it didn't feel like it was engaging sometimes it would be like 1650 in the hover, and suddenly jump to the targeted range, and it certainly didn't start engaging at 25% throttle?"............... "I think that I am missing something here, people say that it starts to engage at 25%, but you hit that really early on and the last time I had it set up, I would think that It would jerk on takeoff, which it didn't do and even sometimes in hover the tj wouldn't govern, "......................... You must have a bad TJ, right?

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HelicopterRadio - Servo - Gyro - Gov - Batt › AAKK! I can't set up my throttle servo!
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