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HelicopterRadio - Servo - Gyro - Gov - Batt › Why Aren't My Servos Symmetrical?
09-03-2003 07:16 PM  14 years agoPost 1
nheather

rrKey Veteran

Horsham, West Sussex, UK

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I'm revisiting the setup of my heli.

I've noticed that both my throttle and pitch servos move asymetrically.

Throttle (Hitec) 52deg/77deg
Pitch (Futaba) 58deg/85deg

For both servos, I've ensured the following

ATVs = 100% each way
Curves = 0,25,50,75,100
Subtrim = 0
Trim = 0
Hover Trim = 0

The radio is a Futaba T8UP.

I'm at a loss as to what could be causing this. Any suggestions would be very grateful.

Cheers,

Nigel

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09-03-2003 08:37 PM  14 years agoPost 2
Carps

rrVeteran

Caterham, Surrey, England

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What happens if you plug the same servos in the cyclic channels ?
And what happened to your ZAP ?

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09-03-2003 10:53 PM  14 years agoPost 3
nheather

rrKey Veteran

Horsham, West Sussex, UK

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Carps,

Okay, this is what I've tried.

Throttle servo in elevator socket - servo moves symmetrically.
This rules out a problem with the servo.

Throttle servo back in throttle socket. Removed all other servos. Switched to fixed wing model. Servo moves symmetrically.
This rules out a fault with the receiver.

So .... there must be something in the heli model that it causes the asymmetric movement.

Note also that total throw when using the elevator or fixed wing model was around 90degs rather than 130degs.

Any ideas what is causing this - I'm baffled.


Cheers,

Nigel

p.s. what's a ZAP?

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09-04-2003 12:51 AM  14 years agoPost 4
mongo

rrVeteran

Midland, Republic of TEXAS

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throtle curve and or
throtle adjust nob not centered and active

same things for the ptich

Copyright © 2001-2005 Mongo Consulting. All rights reserved.

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HelicopterRadio - Servo - Gyro - Gov - Batt › Why Aren't My Servos Symmetrical?
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