Servo extension DIY
01-28-2002, 03:41 PM
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Servo extension DIY
Hello,
is there any problem with extending my servo leads by cutting the wire and soldering another piece of wire to lengthen it ?
I think a properly soldered joint would be better than a contact
joint made with plug-in extensions
is there any problem with extending my servo leads by cutting the wire and soldering another piece of wire to lengthen it ?
I think a properly soldered joint would be better than a contact
joint made with plug-in extensions
02-01-2002, 02:26 PM
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wire
No problem at all. Be careful if you do not use wire made for rc use. For example, wire for rc use (any guage) is made from 60 strands. The more strands the better and the more flexible the wire is. Most places now a days only carry 22 guage wire, but some still only sell 24 guage. Only get the 22 guage.
02-01-2002, 05:59 PM
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Servo extension DIY
02-08-2002, 12:13 PM
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Evan
If I'm not mistaken you are a frequent user of the 9Z yahoo group? Is that so? I have one of the first 9ZAPS that came out in 1993 and it's still going strong. Anyway, I am thinking about making some 36" extensions of my own using Radio Shack wire (278-1224) which is 22g stranded. I noticed your caveat about the number of strands. Is this wire acceptable? It's for a 1/3 gasser, my first. It's a gas and go I purchased to break into the bigger stuff, but the guy made a mess of the wiring and I get jitters and no range with the 10SX he was using. What is the preffered method when going from the 22g to the standard servo plug wire at 26g? Does the smaller connector wire negate the advantages of the 22g in any way. Thanks and take care_Bob
02-08-2002, 01:39 PM
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Servo extension DIY
The quality of the connector is very important; it is easy to build up to much resistance in a poor or corroded connector. You can get by with a poorer connection in the signal wire but the two power leads need to be as good as you can make them. There is very little current draw in the signal wire so resistance there does not do as much damage. Assuming you know how to solder, it is best to eliminate all the connectors you can. Rod AMA 1455 N4MCZ
02-08-2002, 02:03 PM
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9Z & wiring
Yes, I am on the 9Z/9C groups on Yahoo! I have been using the 9Z series for many years like you.
The radio shack wire will work. The issue with the radio shack wire is the strands. The thicker the strands the less flexible the wire. Also I think that wire you mention is shielded?
Most servo's still use smaller guage wire. That really isn't an issue because the heavier guage wire will get the signal and or power to that point, which is what you want. The downside to smaller guage is servo draw from the battery is the servo stalls and the load jumps beyond what the 24/26 guage wire can handle. Digital servo's for example all use the heavier guage wire for this reason.
All the wiring I carry (www.rcaccessory.com) is heavy guage wire, 22 guage. I am about to wire my 40% Extra. I will have a 24" Y with a 24" extension (2 sets to the tail) for the elevators. What I will probably do is use a 36" extension to the 24" Y and twist the wire. This will help keep RFI away as the length of the wire is quite long.
Evan
The radio shack wire will work. The issue with the radio shack wire is the strands. The thicker the strands the less flexible the wire. Also I think that wire you mention is shielded?
Most servo's still use smaller guage wire. That really isn't an issue because the heavier guage wire will get the signal and or power to that point, which is what you want. The downside to smaller guage is servo draw from the battery is the servo stalls and the load jumps beyond what the 24/26 guage wire can handle. Digital servo's for example all use the heavier guage wire for this reason.
All the wiring I carry (www.rcaccessory.com) is heavy guage wire, 22 guage. I am about to wire my 40% Extra. I will have a 24" Y with a 24" extension (2 sets to the tail) for the elevators. What I will probably do is use a 36" extension to the 24" Y and twist the wire. This will help keep RFI away as the length of the wire is quite long.
Evan
02-08-2002, 02:28 PM
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Thanks for the info
SO, if I decide to make my own, #1, the radio shack wire will suffice?, and #2, soldering a short piece of the original 26g servo wire and plug should also work out OK? Thanks again_Bob
02-08-2002, 04:25 PM
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Servo extension DIY
Hi
Fine strand wire is highly recomended
Fine strand wire is used in aplications where you expect a lot of flex or vibration. you can test the difference by just flexing the cable sharply and counting the numer of flexes before it breaks. the diffference is not small, especialy if you are flexing near a connector or solder joint which can act as a stress concentration.
You can get real servo wire from
www.horizonhobby.com
Part number JRPA125 heavy duty 4 foot for 5.95
Best of luck!
Shmo
Fine strand wire is highly recomended
Fine strand wire is used in aplications where you expect a lot of flex or vibration. you can test the difference by just flexing the cable sharply and counting the numer of flexes before it breaks. the diffference is not small, especialy if you are flexing near a connector or solder joint which can act as a stress concentration.
You can get real servo wire from
www.horizonhobby.com
Part number JRPA125 heavy duty 4 foot for 5.95
Best of luck!
Shmo
02-08-2002, 11:10 PM
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I quit soldering
When I need long servo connectors, I buy from Andy Low at Electrodynamics. I like to use his buffered version on anything over several feet long. If he doesn't have a standard length you can use, he will make up whatever you need. His site is at:
http://www.electrodynam.com/
I can and do solder, but why given what you can buy out there. Given the Inernet and how easy it is to shop and order, I can spend my free time building.
Dan
http://www.electrodynam.com/
I can and do solder, but why given what you can buy out there. Given the Inernet and how easy it is to shop and order, I can spend my free time building.
Dan
