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HomeAircraftHelicopterBeginners Corner › Servo wires
01-21-2010 04:00 AM  8 years agoPost 1
blcastle

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Henderson, NV

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I'm upgrading my heli with a new gyro/servo combo. I've seen several people coil their servo wires. How is this done? Do you just wrap the wire around a pencil or something? How long will the coil hold? Are there any problems with doing this?

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01-21-2010 03:17 PM  8 years agoPost 2
JRjoe

rrElite Veteran

Jonesville , IN USA #1

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I've done it before with no problems. Just wrap around a pen or something.


JRjoe.....
Indoor plumbing??? No, we don't need that!!!

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01-21-2010 04:58 PM  8 years agoPost 3
Justin Stuart (RIP)

rrMaster

Plano, Texas

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If you use a heat gun and heat the wire a little bit, the coil will stay better. Either that or coil it over a pencil and let it stay that way overnight.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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01-22-2010 12:11 AM  8 years agoPost 4
blcastle

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Henderson, NV

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Thanks. I didn't really want to cut those small wires and solder everything back together.

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01-22-2010 12:38 AM  8 years agoPost 5
trunkmunki

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Bangor

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Shouldn't be any soldering. Just get a crimper and some new connectors. Cut the wires to length, cripm the new connector on and you are good to go. There are numerous websites with all-in-one kits to do this, ranging from cheap to not. I recommend the "ratchet" type crimper, the cheapy-cheapy ones do not seem to make very good crimps.

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01-22-2010 08:34 AM  8 years agoPost 6
Smok

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Antwerp, Belgium

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I wouldn't overdo this thing with heat guns, soldering
and any similar time-consuming stuff.

The point with servo wire coiling/twisting is to decrease
the reception of RF noise. Maybe more important with gas engines.
or with really long extension cables ( like in big planes ).

If you twist the servo extension wire a few turns,
the effect would be the same. Or if you use an already twisted
extension cable... I am using mostly these on my planes,
especially the bigger ones. On Helis I use a regular Futaba
extension cable, which is flat. It makes for a neater install
if I leave it flat. What I do however is I always try
to find an extension cable length that is just right,
so I do not have to coil the excess and stuff it somewhere...

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01-22-2010 02:44 PM  8 years agoPost 7
Thumpernator

rrKey Veteran

Senoia, Georgia, USA

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Excellent source for servo wire, terminals, crimpers, etc.

http://www.hansenhobbies.com/

Like Trunkmunki said, get the ratchet type crimpers. Well worth it. I bought mine to shorten the servo wires and also make my own extensions to exact lengths. Especially handy for extensions for the gyro.

Dave
I keep on thinking, but nothing's happening. Knuk, Knuk, Knuk

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01-22-2010 03:54 PM  8 years agoPost 8
Smok

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Antwerp, Belgium

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@Thumpernator

Good info and just in time for me - thanks !

(I need to make a few short extensions and I have already got the cables and connector kits - now I just need the crimping tools..)

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01-24-2010 06:56 PM  8 years agoPost 9
blcastle

rrNovice

Henderson, NV

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Servo wires
Thanks for the input. I may re-think how I'm going to run my servo wires. I would much rather have them to length but I'm not very creative on how to do it. I'll take a look at the crimpers and the new connectors. Thanks again.

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01-24-2010 09:36 PM  8 years agoPost 10
Melnic

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Columbia, MD,USA

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I wrap it around a small screwdriver or Hex wrench. I push on it as it's coiled but don't pull it. It will expand.

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01-24-2010 10:56 PM  8 years agoPost 11
blcastle

rrNovice

Henderson, NV

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Hansen Hobbies
Thanks Thumpernator!

Took a look at Hansen Hobbies and decided to buy the Kit without the wire strippers since have have several of those. I think the best look is to shorten the wires till they are the exact length you need. Thanks again!

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01-24-2010 11:11 PM  8 years agoPost 12
Smok

rrApprentice

Antwerp, Belgium

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Just a small comment to my previous post - IMO for medium sized planes and 50-90 helicopters it's just fine to use some stock extensions - usually hobby shops have a good choice - at least from 10cm to 1m

I am doing some cables myself but only for my small helis and park flyers, as I had a hard time finding any extensions made of thinner wire - and I do not like to connect an extension that would weight almost the same as a micro servo.

It takes some practice and several wasted connectors, my usual mistake was to tighten too much so the connector would almost cut the wire.

I would not do that for shortening a regular extension by 5cm though...

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01-24-2010 11:21 PM  8 years agoPost 13
Thumpernator

rrKey Veteran

Senoia, Georgia, USA

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BL, You're welcome. Don't forget to make a few practice crimps. It's not hard, but you need to find 'your' technique that works for you.

Their video shows inserting the pin into the crimper first. I like to put the wire in the pin and slightly squeeze the pin (with long nosed pliers) on the insulation of the wire. Then insert into the crimper. That way, I know the wire is exactly where it should be. Try both and see which works for you. Have fun.
my usual mistake was to tighten too much so the connector would almost cut the wire
Smok,

That won't happen with the ratchet crimpers.

Dave
I keep on thinking, but nothing's happening. Knuk, Knuk, Knuk

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01-24-2010 11:27 PM  8 years agoPost 14
Smok

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Antwerp, Belgium

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OK thanks! - I'll give it a try, I started with the basic one..

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