Mounting Servos in the tail.

[jmelzer]

I am about to mount servos for rudder and elevator in the tail of the model I am building. Is there a way to reduce the wiring ie. are the positive and negative wires common to both servos? Can I run one common pos and one common neg and seperate signal leads to each of the servos to cut down on the long wire run?
Is this a good idea?
Secondly, is there any problem with long servo leads and interference? If so does twisting the leads help?
Thanks, Jay

[gregg f]

Jay: i would keep them seperate. i've never had problems with the long leads. just keep the antenna from running next to them.btw how long will they be?...........g

[Sparky Paul]

Originally posted by jmelzer
I am about to mount servos for rudder and elevator in the tail of the model I am building. Is there a way to reduce the wiring ie. are the positive and negative wires common to both servos? Can I run one common pos and one common neg and seperate signal leads to each of the servos to cut down on the long wire run?
Is this a good idea?
Secondly, is there any problem with long servo leads and interference? If so does twisting the leads help?
Thanks, Jay
.
Yes, this will work, but the weight savings of 4 wires versus 6 isn't that significant.
Twisting the leads is recommended no matter which way you go.

[tim hooper]

Jay,

It works for me!

http://www.rcgroups.com/forums/showthread.php?s=&threadid=73489&highlight=servos

tim:)

[Mike Seale]

I notice that Stephen Mettam has done this in his review of the Electric Floh in the latest Q&EFI.

Regarding weight saving, the most extreme case I saw was at the F5B World Championships in 2000. Markus Moekli (SUI) had removed his receiver antenna and replace it with a very fine piece of enamelled copper. This ran for a couple of inches where it was soldered to the elevator pushrod. At the other end of the pushrod another piece of enamelled wire was soldered to the pushrod to make up the full length.

Now, how would this affect interference? We're told not to run the antenna near to pushrods - but what about the antenna BEING the pushrod? :D

Mike

[Sparky Paul]

The antenna in my BalsaUSA Eindecker runs thru the middle of 6 steel cables used to pull-pull the vertical and horizontal.
HLG fliers have used pull-pull cables as antennas.

[jmelzer]

As usual the ezone collective knowledge is amazing.
Thanks for all the great ideas.
The wires should run about 30 inches and I think I will go with two separate twisted 3 wire leads. This is a 20 cell ship and I quess the weight saving will not amount to much. Here is an early shot of the fuze. I'm further along now.
Best, Jay
p.s. Happy New Year