Connectors

[speakerman1]

Got some of these. Don't use a torch use a heat gun with the curl attachment. I will use them to put the new head bank on my 707. There is just a few wires to splice in.

http://www.amazon.com/gp/product/B001H1 ... 00_s00_i00

Larry

 

[laatsch55]

Pretty darn handy.

 

[speakerman1]

Shrink tube and solder included LOL.

Larry

 

[NavLinear]

Shrink tube and solder included LOL.

Larry

Agreed - a very nice way to splice wires. When I read the Amazon reviews I was dismayed that the reviewers were using direct fire to shrink the tubing, Baaad!

 

[speakerman1]

Ours use to have an insp. stripe. When the colored stripe disappeared you were at the right temp and the solder had melted. I have used a lighter on the ramp. Didn't want to drag a cord 300 feet. Taking it out isn't bad. Rolling them up isn't fun. LOL

Larry

 

[mlucitt]

Just make sure to have a solid mechanical connection (twisted, braided, or crimped) before the solder is used to secure the connection. You don't want the solder to be the electrical connection between the two wires. I prefer the Western Union splice whenever I can use it.

Mark

 

[speakerman1]

Good enough for every aircraft, and engine manu. and the FAA good enough for me. Western Union splice isn't air worthy. Might have been OK sending telegraphs. LOL

Larry

 

[speakerman1]

http://blog.makezine.com/2012/02/28/how ... standards/
Only know of one place a solid wire is used and that is on the fire loops. Can't solder or do a repair that will change the resistance. Which is a no no. But I will keep it in mind when I"m connecting a solid wire.

Larry

 

[mlucitt]

Audio equipment = not engine air worthy
Audio equipment = not airframe air worthy
Audio equipment = not a fire loop
Audio equipment = not NASA standard
Audio equipment = not FAA standard
Audio equipment = not a telegraph

 

[speakerman1]

How much solid wire is used in Audio? AUDIO AUDIO. If you use it good for you. I use stranded unless I'm using some of the silver wires and I wouldn't use a wester union splice since I'm not running solid core Get a grip dude you talking out your butt because you don't know what you are talking about.

Larry

 

[laatsch55]

IN THE OILFIELD --- corrosion is a MAJOR FACTOR. We have panels running in an atmosphere of various concentrations of H2S and CO2, among others. IF it's not gas tight or liquidtight or mechanically kept , it don't stand a chance. I rtegularly change out the big 30 amp Potter and Brumfield relays that have open frames. The wires that attach the movable contacts to the stationary are an ungodly number stranded and they make it a year at the most. Copper turns grey or black in two months. Larrt.....

 

[Skratch]

Settle down boys

 

[mlucitt]

No reason for name calling.

There are very few wire to wire splices in our audio gear. In fact, design engineers place components such as fuse holders and terminal strips in positions to avoid wire splices. Almost every connection in audio gear is point to point except for the transformer connections. The transformer leads are often solid core because they come off the windings. Transitioning a solid core wire to a tinned stranded wire of the same gauge from the IEC jack or the power cord is effectively done with a heat-shrink insulated Western Union splice.

Mark

 

[speakerman1]

IN THE OILFIELD --- corrosion is a MAJOR FACTOR. We have panels running in an atmosphere of various concentrations of H2S and CO2, among others. IF it's not gas tight or liquidtight or mechanically kept , it don't stand a chance. I rtegularly change out the big 30 amp Potter and Brumfield relays that have open frames. The wires that attach the movable contacts to the stationary are an ungodly number stranded and they make it a year at the most. Copper turns grey or black in two months. Larrt.....

Lee These are called environmental splices. Nothing can't get to them. They go on engines a lot. High temp and the elements call for them to be used. Try this stuff LPS3. It puts a barrier on things so air can't get to it. See if it can be used on them. Corrosion is a big thing with us also. It may be 4 to 8 years before a plane starts getting to heavy inspections. I have seen whole skins changed because of corrosion.

Mark or what ever you need to stop. You tin a stranded wire and try to do that splice. Bending tinned wire is not easy. But you aren't doing a western union splice. You use solid wire.

Larry

 

[laatsch55]

It's certainly an issue Larrt. H2S costs us a lot of money.

 

[speakerman1]

They do make anti-corrosion compounds. Do you have a chem. supplier?

Larry

 

[NavLinear]

You guys always have interesting topics. I'm sure Lee has spent a lot of time investigating this problem but here's a couple of links I found while surfing.

I'm guessing from what I read in this thread that this is an airborne thing and not a pipeline issue - but only a guess.

http://www.materialsinspectionassociates.com/H2S.php

http://www.cortecvci.com/Publications/P ... /09573.pdf

 

[speakerman1]

I think I have read where you can run an electrical charge into the metal to stop corrosion. I'll check and see. I worked with Hyd. Bi and disulfide a long time ago.

Larry

 

[speakerman1]

We do try to corrode pieces so they can't corrode any more Cyl. head we throw in in a degrease tank Turco. Nasty stuff. I leaned up against it one time for a few bseconds. It started getting warm.. Got home a a silver dollar sized blister on my hip. LOL Didn't do that again. LOL Then we bead blast. Then we Acid etch. Then alodine. The alodine corrodes the cyl head. Don't forget and leave one in overnight. LOL It is the color of chocolate. Has to be a pores. It does alum. Good it is a controlled corrosion.

Larry

 

[mlucitt]

Here is an example of a Western Union connection that I made using 18 ga solid copper wire and 18 ga stranded wire. I lightly tinned the stranded wire and it behaved just like the solid copper wire.

The advantage of this connection is that it does not increase the diameter of the wires that much and the splice is stronger than the breaking strength of the wire itself.

The sharp ends of the wires are trimmed, if needed.
Then an insulating jacket of heat shrink tubing will make this splice very effective.

Mark