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Model Forum / Radio Controlled / Helicopters / February 2006



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Field force 9 question...

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david - 12 Feb 2006 20:25 GMT
related to F/w really, but here goes...I'm fitting a H9 P51, paired
ailerons, two flap servos, two elevator servos, throttle, rudder, gear. Can
this be done on an 8ch Rx? I have used the "ailevator" mix for the two
elevator servos but this now seems to preclude using a spare channel for the
second flap servo, yet I still have an output free ont he Rx. Am I missing a
trick here or do I need to go and get a 9ch Rx. (Or did you other H9 users
mod it to be able to pair the elevator servos?) NB, I cannot Y lead the
elevators as I am taking outputs from OPPOSITE sides of each one, so they
MUST rotate in opposite directions if I am to avoid tailerons!!

Apologies for the fixed wing theme, but I'm pulling me hair out!

David
Mr Fixit - 12 Feb 2006 21:41 GMT
> related to F/w really, but here goes...I'm fitting a H9 P51, paired
> ailerons, two flap servos, two elevator servos, throttle, rudder, gear.
[quoted text clipped - 10 lines]
>
> David

can you not just mix the flap channel  and channel 8 together??
david - 12 Feb 2006 22:04 GMT
> can you not just mix the flap channel  and channel 8 together??

No because the ailevator mix has channels 2 and 8.

I could really do with either mixing ch 7 to the flap signal. Either that or
find another way of controlling two elevator servos without a Y lead.

I'm not sure there's an electronic answer to this one.

D
Techrep - 13 Feb 2006 19:13 GMT
>> can you not just mix the flap channel  and channel 8 together??
>>
[quoted text clipped - 6 lines]
>
> D

What is the problem?

1- aileron
2- elevator #1
3- throttle
4- rudder
5- gear
6- flap #2
7- flap #1
8- elevator #2

A simple P-mix 100% from Ch7 master to ch6 slave will do the flaps.

Battery is Y'd into the lowest drain channel which would be throttle.

Battery monitor is Y'd into another channel.

Fritz
 
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