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RC Radios, Transmitters, Receivers, Servos, gyros Discussion all about rc radios, transmitters, receivers, servos, etc.

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Old 11-26-2013, 10:35 PM   #1
ianfox
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Default Aileron Servo Direction

Simple question I'm sure.......

I've just replaced a Parkzone aileron servo with a Towerpro servo, meaning that I have one original Parkzone servo and one Towerpro servo on the two ailerons. Unfortunately, now both servos work in the same direction (both up or both down). It's as though I need to reverse the Towerpro servo for the direction of travel to work? Is this normal for different servo manufacturers to have different directions?

ta
Ian
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Old 11-26-2013, 10:41 PM   #2
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Couple things:

1. When it comes to ailerons, I always use the same brand/model servo on both sides. Some servos have different travel than others, and you don't want differential throw on ailerons. This may also help avoid your "travel direction" issue.

2. A simple fix would be to take the new servo back out and flip it over (for example, if the servo horn is toward the fuse, flip it so the horn is toward the wingtip).

I always mess this up when doing flaps on a Y connector. I'm so used to putting aileron servos in with horns on the opposite sides, I forget you have to have both servos facing the same direction for flaps.

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Old 11-26-2013, 10:43 PM   #3
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Can't flip the flipping thing, the control rod will be the wrong length as the sevo motors aren't central.......
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Old 11-26-2013, 10:45 PM   #4
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Then you may need to take out the other servo and replace it with another TP. That may be your only solution at this point. Either that, or put a servo reverser in line on just that servo.

Pat Gagnon

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Old 11-26-2013, 10:52 PM   #5
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I think you're right. It's good practice to have the aileron servos the same make after all. It looks as though the different servo manufacturers have different orientations...... Back to eBay!!
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Old 11-26-2013, 11:32 PM   #6
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Originally Posted by ianfox View Post
I think you're right. It's good practice to have the aileron servos the same make after all. It looks as though the different servo manufacturers have different orientations...... Back to eBay!!
Yep and that actually comes in handy for some situations - like flaps.

Programmable Digitals you can specify rotation direction.

But I agree with above I always use the same servo x2 on aileron.

Mike
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Old 11-27-2013, 03:44 AM   #7
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if the old servo matches the rudder/elevator, just swap one of those. then you have matching sevos in aleroins. rudder/elevator shouldn't be too picky and dont have to match.

slow stock prop reversal. it flies! easily! 543 watt dual motor bipe slow stick. push-me-pull-you. 242 watt 3 channel slow stick. 365 watt mini ultra stick. 415 watt mini contender. 810 watt ultra stick .25e. 220 watt alpha 450 sport (retired).
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Old 11-27-2013, 05:16 AM   #8
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What radio and receiver are you using? If you can, set up dual ailerons instead of using a Y-splitter. That way you can reverse one of them.
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Old 11-27-2013, 07:02 AM   #9
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I think my RX is a radio shack (?). Its digital, but I don't think you can programme individual ailerons. I never thought about swapping the server with the rudder our elevator servo, good idea, thanks!
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Old 11-28-2013, 08:27 PM   #10
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Originally Posted by ianfox View Post
Simple question I'm sure.......
I've just replaced a Parkzone aileron servo with a Towerpro servo, meaning that I have one original Parkzone servo and one Towerpro servo on the two ailerons.
Unfortunately, now both servos work in the same direction (both up or both down).
It's as though I need to reverse the Towerpro servo for the direction of travel to work?
Is this normal for different servo manufacturers to have different directions? ..ta Ian
As you have learnt, standard rotation for Hitec, JR and most servo is clockwise direction,
Futaba and clones thereof operate in an anti clockwise direction.
Whilst best, as per above post, is to swap out the Elevator or Rudder servo so both
Aileron servo are the same, in some instances it is easier to manually reverse a servo:

. Servo - DIY Reverse Rotation
. Servo - DIY Reverser, Driver, Direct Controller and other mods.
. Servo - Reverse operation . DIY pictorial
. Servo - Reverser for Y-cord operation -

Much more information available under sub sections
"Glitches & Jitter in Receiver, Servo & ESC - Causes and Cures"
"Servo - Alterations, Calculators, Databases, Leads, Repairs, Convert to an ESC or winch & FAQ."
below
"Radio Systems, Accessories, Alterations and FAQ" at
Alan's Hobby, Model & RC FAQ Web Links

Alan T.
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Old 12-18-2013, 08:05 AM   #11
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It is handy to have a couple of servo reversers in your toolbox. They are only about $2 at Hobby King (My LHS charges $29.95)
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Old 12-18-2013, 08:33 PM   #12
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I've never had an instance where I couldn't flip.the servo around.

slow stock prop reversal. it flies! easily! 543 watt dual motor bipe slow stick. push-me-pull-you. 242 watt 3 channel slow stick. 365 watt mini ultra stick. 415 watt mini contender. 810 watt ultra stick .25e. 220 watt alpha 450 sport (retired).
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