Wiring question |
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Wiring question |
r_towle |
Jan 6 2016, 10:15 PM
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#1
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
In a high vibration application, in moist conditions, what is the best way to splice wiring?
I cannot solder. I have little faith in,crimped connectors. Is there a better way? |
Puebloswatcop |
Jan 6 2016, 10:36 PM
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#2
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Senior Member Group: Members Posts: 1,389 Joined: 27-December 14 From: Mineola, Texas Member No.: 18,258 Region Association: Southwest Region |
In a high vibration application, in moist conditions, what is the best way to splice wiring? I cannot solder. I have little faith in,crimped connectors. Is there a better way? Why is it you can't solder? It is for sure the best way to splice. Solder then heat shrink to cover it. If you have to, practice on something else, but there is no better way. As for crimped connectors, I agree, very little faith. Soldering is sometimes tricky with old crusty wiring, but a little flux and the right solder and all is well. |
Spoke |
Jan 6 2016, 10:43 PM
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#3
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
Solder is only good for secure electrical connections. It should not be used to hold wires together.
Get the crimp connector, take off the plastic insulation. Slide the crimp on the wire. Also slide on a piece of shrink wrap. Twist the wires together. Slide the crimp over the twisted wires and crimp. Solder the whole thing. Then slide the shrink wrap on the crimp and heat. Cover the shrink wrap with water resistant RTV. |
SirAndy |
Jan 6 2016, 10:58 PM
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#4
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Resident German Group: Admin Posts: 41,640 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
A set of Lüsterklemmen will give you a good connection that can withstand vibration and can be used in a moist environment by using shrink wrap or electrical tape.
(IMG:style_emoticons/default/smile.gif) (IMG:http://www.914world.com/bbs2/uploads_offsite/mic.hit-karlsruhe.de-179-1452142719.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/t1.ftcdn.net-179-1452142720.2.jpg) |
Dave_Darling |
Jan 7 2016, 12:24 AM
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#5
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
If you've got good equipment, crimping can be more secure than soldering. The good stuff ain't cheap, and the cheap stuff ain't good, though.
--DD |
screenguy914 |
Jan 7 2016, 12:28 AM
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#6
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Member Group: Members Posts: 249 Joined: 6-July 09 From: So. Cal Member No.: 10,540 Region Association: Southern California |
Wiring experts say that the process of soldering will make the splice rigid and thus susceptible to vibrations which can create an open circuit. Properly crimped connections maintain flexibility and are thus preferred.
Sherwood |
76-914 |
Jan 7 2016, 09:13 AM
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#7
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,502 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
(IMG:style_emoticons/default/agree.gif) Yep. Ask an A&P. Failure will occur at the point where the solder joint ends and the bare wire begins. One side is ridged and the other flexes. Just a matter of time. (IMG:style_emoticons/default/beerchug.gif) I like Andy's approach. |
Dave_Darling |
Jan 7 2016, 10:18 AM
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#8
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914 Idiot Group: Members Posts: 14,986 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
Not all soldering is equal, though. Some solder joints are acceptable (or required!) in aerospace applications as well! But there are some pretty stringent requirements about the results. Probably beyond the skill (or at least knowledge) of most of us, though.
--DD |
porschetub |
Jan 7 2016, 12:36 PM
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#9
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Advanced Member Group: Members Posts: 4,699 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
In a high vibration application, in moist conditions, what is the best way to splice wiring? I cannot solder. I have little faith in,crimped connectors. Is there a better way? Duraseal connectors are good and waterproof,crimp on and shrink with a heatgun. Crimp connectors are only as good as the tool that crimps them,forget the cheap tools they don't crimp the connector to the wire properly. Soldering is a matter of practice to get right,you get better as you go along,the secret is to have clean wire and a good hot soldering iron,I don't personally like the chocolate block connectors and won't put them near my car. Heatshrink is ok over a soldered joint but must be the right size,I have found that the internally clued type is the only one that is waterproof. |
Mike Bellis |
Jan 7 2016, 10:16 PM
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#10
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
In the Marine Corps we used solder crimps with built in shrink tube. They work great in jet fighters and heilos.
They don't contain much solder and the shrink tube supports the wire so the joint will not flex and break. |
colingreene |
Jan 8 2016, 02:14 AM
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#11
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Senior Member Group: Members Posts: 729 Joined: 17-October 13 From: Southern California Member No.: 16,526 Region Association: Southern California |
Usually in Aerospace we solder then pot it. Or what mike talked about.
I forget the product name but as with anything its not cheap. Generally pep boys water proof heat shrink crimp connects work really well for most applications. depends on what you are doing and how dedicated you want to be. |
r_towle |
Jan 8 2016, 10:26 AM
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#12
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
How about instead of dozens of connectors I use a water proof plug.
Something in range of 10-20 different connections. Where would I find those? |
Series9 |
Jan 8 2016, 05:42 PM
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#13
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Lesbians taste like chicken. Group: Members Posts: 5,444 Joined: 22-August 04 From: DeLand, FL Member No.: 2,602 Region Association: South East States |
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Mike Bellis |
Jan 8 2016, 06:17 PM
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#14
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Here is the commercial version of out military solder crimp...
https://www.youtube.com/watch?v=BmZ8Ry99TMs Similar product... https://www.youtube.com/watch?v=24FjjIVpk9U |
Mike Bellis |
Jan 8 2016, 06:21 PM
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#15
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Marine Corps sent me to a week long solder school similar to this... Thing is, I already knew how to solder... (IMG:style_emoticons/default/dry.gif)
https://www.youtube.com/watch?v=xPkc6k5uWUQ |
r_towle |
Jan 8 2016, 07:16 PM
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#16
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Nope, it's true. Must admit that the tools I have suck. My buddy has an industrial soldering iron with a big box, I actually did solder with that... I cannot sweat a plumbing connection to save my life. The new pex tubing and connectors opened a whole new world to me for plumbing. |
Spoke |
Jan 8 2016, 08:24 PM
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#17
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
I cannot sweat a plumbing connection to save my life. I call (IMG:style_emoticons/default/bs.gif) for a guy with your skills. (IMG:style_emoticons/default/beerchug.gif) 3 keys to soldering wires or pipes: 1) Make sure everything is clean 2) Use flux 3) Proper heat For plumbing, the fourth key is no water in the pipes. Most solder issues involve not enough heat. When properly heated, the items will suck solder in. If you have to push on the solder then it's not hot enough. |
wndsnd |
Jan 8 2016, 09:24 PM
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#18
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You wanted a horse, but got a goat. Nobody wants a goat.... Group: Members Posts: 2,861 Joined: 12-February 12 From: North Shore, MA Member No.: 14,124 Region Association: North East States |
How about instead of dozens of connectors I use a water proof plug. Something in range of 10-20 different connections. Where would I find those? For that many connections I would consider a power distribution block. Lots of good stuff here http://catalog.bluesea.com/#90 |
Elliot Cannon |
Jan 8 2016, 09:45 PM
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#19
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None |
Are you working on a mars lander or something? It's a car for cripes sake! Strip of 1/4 inch of insulation on each end, push them in a splice and crimp them.
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r_towle |
Jan 8 2016, 11:03 PM
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#20
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Are you working on a mars lander or something? It's a car for cripes sake! Strip of 1/4 inch of insulation on each end, push them in a splice and crimp them. Boat, and there are two engines, and lots of sensors. The DAPO replaced everything with RED wire, I guess it was all he had. So......I will most likely terminate two harnesses about 4 feet away from the engines and build harnesses like our cars, just dedicated to the motor for all the sensors. He used crimps, they don't work in high heat, high vibration, salt water etc....it's ugly doing forensics on this stuff, it does not last in,that environment. And I admit, I hate plumbing. I will never admit to knowing how to do plumbing. |
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