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Valin
Joined: 13 Apr 2010
Posts: 31
Location: Colorado
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 Posted: Tue Feb 04, 2014 10:38 am Post subject: Small Connector for Ray Allen Trim Servo Cables? |
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Hello,
Can anyone recommend a good, small, preferably environmentally sealed connector to use on the five conductor cable of 22 AWG wires that run to each of the Ray Allen trim servos? If I weren’t going to be flying in primer first I’d probably just splice the wires together for the entire run. But with paint and control surface removal in the known future I’d like to make removal of the control surfaces easier with connectors on these cables. They need to be low volume connectors to fit in the space where they’ll be.
Thanks,
Valin Thorn
Lancair Legacy Project
Boulder, Colorado
BTW, when I try to email in questions to the list nothing comes through for me. So posting directly to the AeroElectric List Forum.
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edpav8r(at)yahoo.com
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| Posted: Tue Feb 04, 2014 10:58 am Post subject: Small Connector for Ray Allen Trim Servo Cables? |
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Weather Pack connectors should do the trick, assuming they fit your space constraints. The 5-pin is a bit bulky, but a 2-pin and a 3-pin offset from one another might work. They're even available as pigtails so you don't need the crimp tool.
http://www.whiteproducts.com/weather_pack.shtml
Eric
On Feb 4, 2014, at 11:38 AM, "Valin" <thorn(at)starflight.aero (thorn(at)starflight.aero)> wrote:
[quote]Hello,
Can anyone recommend a good, small, preferably environmentally sealed connector to use on the five conductor cable of 22 AWG wires that run to each of the Ray Allen trim servos? If I weren’t going to be flying in primer first I’d probably just splice the wires together for the entire run. But with paint and control surface removal in the known future I’d like to make removal of the control surfaces easier with connectors on these cables. They need to be low volume connectors to fit in the space where they’ll be.
Thanks,
Valin Thorn
Lancair Legacy Project
Boulder, Colorado
[b]
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hooverra
Joined: 18 Jan 2009
Posts: 11
Location: The Plains, Virginia
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| Posted: Wed Feb 05, 2014 4:21 am Post subject: Re: Small Connector for Ray Allen Trim Servo Cables? |
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http://www.digikey.com/catalog/en/partgroup/en3-series/2186
switchcraft en series is sealed, small and works well for trim cables. It takes reasonable soldering skill but not bad.
Ralph
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Dennis Johnson
Joined: 10 Jan 2006
Posts: 89
Location: N. Calif.
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| Posted: Wed Feb 05, 2014 6:02 am Post subject: Small Connector for Ray Allen Trim Servo Cables? |
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Hi Valin,
I used mini S-VHS connectors for my Ray Allen trim servos. That is what the company recommends and S-VHS connectors are round and have the benefit of passing through existing round holes, unlike D-Sub connectors. Mini S-VHS connectors from DigiKey are available with different numbers of wire connections, depending on which servo you're connecting them to. I don't see any need for environmentally sealed connectors in my Legacy.
If I had it to do again, I'd go with Ron's suggestion of soldering the wires together, with a generous service loop. Since you're flying before final painting, that might be emotionally difficult because you'll have to cut the wires to remove the rudder and elevator when you paint, but it's not that big of a deal. I think soldering the wires together for first flight, cutting them apart for painting, and then soldering them back together is going to be less trouble and more reliable than finding and using connectors.
If I absolutely had to have connectors instead of soldering the wires together, I'd use Bob's method of D-Sub connectors without the shell, covered by heat shrink. You might have to slightly enlarge some of the pass through holes to get the connector through, but that's not a problem.
I also recommend buying the wire from Ray Allen to connect to the servos. I know it's tiny 28 gauge, but it comes in a very durable sheath and will be much neater than making your own bundle from manually twisting 22 gauge wires together.
Best,
Dennis
Lancair Legacy, 680 hours
[quote][b]
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bakerocb
Joined: 15 Jan 2006
Posts: 727
Location: FAIRFAX VA
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| Posted: Wed Feb 05, 2014 7:19 am Post subject: Small Connector for Ray Allen Trim Servo Cables? |
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2/5/2014
Hello Valin, Why not purchase several male and female machined D sub pins? Here is just one example:
[url=http://www.newark.com/cinch/030-1952-000/d-sub-contact-pin-24-20awg-crimp/dp/12M3924?mckv=sShye0Dzw|pcrid|33869844621|plid|&CMP=KNC-GPLA]http://www.newark.com/cinch/030-1952-000/d-sub-contact-pin-24-20awg-crimp/dp/12M3924?mckv=sShye0Dzw|pcrid|33869844621|plid|&CMP=KNC-GPLA[/url]
(You may prefer the high density version.)
Then you just crimp the appropriate gender pin on each of the 10 Ray Allen bare wire ends and stick the pins together. Some tips and comments:
a) Be sure to put the appropriate sized heat shrink over the wires before crimping the pins onto the wires so that you can slide the heat shrink over the joined pins before heat shrinking. The heat shrink will help keep the pins together when joined and provide some environmental protection.
b) If you desire additional environmental protection some goop can be applied to the ends of the heat shrink.
http://eclecticproducts.com/e6000_retail.htm
c) If you are not satisfied with how firmly the pins connect together put a very slight bend in the male pin before inserting it into the female pin to assure a better connection.
d) You can stagger the ends of the cut wires so that all of the pins do not remain in one large clump when the job is finished.
e) These connections can be separated (for later reconnection) by carefully using a razor blade or Xacto knife to split the heat shrink.
OC
=======================================
Time: 10:38:59 AM PST US
Subject: AeroElectric-List: Small Connector for Ray Allen Trim Servo Cables?
From: "Valin" <thorn(at)starflight.aero>
Hello,
Can anyone recommend a good, small, preferably environmentally sealed connector
to use on the five conductor cable of 22 AWG wires that run to each of the Ray
Allen trim servos? If I werent going to be flying in primer first Id probably
just splice the wires together for the entire run. But with paint and control
surface removal in the known future Id like to make removal of the control
surfaces easier with connectors on these cables. They need to be low volume
connectors to fit in the space where theyll be.
Thanks,
Valin Thorn
Lancair Legacy Project
Boulder, Colorado
[quote][b]
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user9253
Joined: 28 Mar 2008
Posts: 1921
Location: Riley TWP Michigan
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| Posted: Wed Feb 05, 2014 7:30 am Post subject: Re: Small Connector for Ray Allen Trim Servo Cables? |
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I think this was Bob's idea but I could not find it on his website. Use 5 sets of male-female D-Sub pins without any shell at all. Cover each mated pair with heat-shrink. If the joints have to be weather proof, use adhesive lined heat-shrink. The heat shrink will have to be cut to separate the connections, not a big deal.
Joe
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