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Author Topic: Soldering, help please  (Read 6643 times)

Richard M

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Soldering, help please
« on: November 07, 2010, 03:42:11 pm »

Hi All

I am good at all sorts of things (although my wife might not agree) but soldering is not one of them.
I can solder plumbing fittings and wiring joints,sort of, but have been defeated by my Robbe yacht.

The stays comprise steel wire and each end has to be soldered into a brass collar to form a closed loop. I cannot get the steel wire to "wet". I am useing standard cored electronic solder and have a gas fired soldering iron. The solder is sticking fine to the collar but a good yank pulls the wire out every time. I have experimented with emerying the wire, using external flux but no success, I just cannot tin the wire. Should I be using different solder?

Help please as I am at a standstill

Richard M
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gribeauval

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Re: Soldering, help please
« Reply #1 on: November 07, 2010, 04:30:57 pm »

Sounds like the wire is stainless steel. In this situation I use Carr's Green flux and tin the abraded wire and the brass then sweat them together with a touch of extra solder if needed.


Mike
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Richard M

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Re: Soldering, help please
« Reply #2 on: November 07, 2010, 04:41:27 pm »

Thanks for help. Is Carrs green flux easy to get (I can look on Internet) and should I continue to use electronic cored solder?

Cheers
Richard.

And you are right, it must be stainless.
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nemesis

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Re: Soldering, help please
« Reply #3 on: November 07, 2010, 05:43:09 pm »

Hello, Can you not use ferrules instead, thread the wire through the ferrule, form your loop and the thread it back through and crimp it. Works well on metre boats etc and it is neat. Nemesis.
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Richard M

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Re: Soldering, help please
« Reply #4 on: November 07, 2010, 06:05:06 pm »

Ferrules would be great as it gets me away from soldering. Are these a specialist item, if so where from and do you require a special tool?

Thanks
Richard
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Rex Hunt

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Re: Soldering, help please
« Reply #5 on: November 07, 2010, 06:08:31 pm »

Have a look here and then Googles either Carrs solders or Fry's Solders

http://www.bssa.org.uk/topics.php?article=150

hth

Rex
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Watchleader

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Re: Soldering, help please
« Reply #6 on: November 07, 2010, 06:36:40 pm »

Hi Richard M
For ferrules of just about all suitable sizes for model boat rigging check out your local angling suppliers or internet angling gear suppliers, or of course ebay.
Carp and pike rigs are ideal for rigging wire in stainless steel with or without nylon coating. :-)) :-))
I am not a fisherman, just a model boat enthusiast. :} :}
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Rex Hunt

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Re: Soldering, help please
« Reply #7 on: November 07, 2010, 08:45:54 pm »

For ferrules, is it not possible to crimp brass tubes with a pair of pliers after inserting the cable, and then maybe fill them with solder for security?

Rex
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Richard M

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Re: Soldering, help please
« Reply #8 on: November 08, 2010, 03:23:45 pm »

Special thanks to Rex and Watchleader. I am just about to set off for both the local angling shop and the engineers merchants to see what I can aquire.

I dont want to crimp the brass ferrulles supplied in the kit as without some specialist tool, they will just flatten and look naff.


I really appreciate the help guys as I was seriously baffled.

Rchard
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tobyker

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Re: Soldering, help please
« Reply #9 on: November 08, 2010, 09:56:26 pm »

Baker's fluid flux? though I'd go the fishing tackle route myself. Used some rod tips as guides for sheets on a barge - very low friction and just the job.
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Tankerman

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Re: Soldering, help please
« Reply #10 on: November 09, 2010, 12:29:36 pm »

Try this link:   http://www.finescale.org.uk/index.php?option=com_virtuemart&Itemid=56

You should be able to find some useful information here and at only £3 the soldering handbook is worth reading.

Chris
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Richard M

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Re: Soldering, help please
« Reply #11 on: November 09, 2010, 04:15:20 pm »

I understand Carrs brown flux is the one for stainless and I will pick some up on Friday.

Local tackle shop only had tubular ferrules to be flattened with pliers. Still concerned that would not look good.

When I was in engineering, the electronics guys had some specialist pliers that made really tidy crimps of small ferrules but I dont know enough. Might look at RS. Not talking about the clumsy red/blue/yellow car type ones

Richard
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RaaArtyGunner

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Re: Soldering, help please
« Reply #12 on: November 09, 2010, 08:59:16 pm »

Try this link:   http://www.finescale.org.uk/index.php?option=com_virtuemart&Itemid=56

You should be able to find some useful information here and at only £3 the soldering handbook is worth reading.

Chris

Chris,

Good link. :-)) :-)) :-))

Am constantly amazed at the useful web links mayhemers come up with.   O0 O0 O0

Must be doing something wrong with my searching  <:( <:( <:(
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john44

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Re: Soldering, help please
« Reply #13 on: February 07, 2011, 01:53:55 pm »

Crimps are widely used on IOM yachts for the shroud wires which are stainles steel. What I do after crimping is apply a small length
of heatshrink over the crimp to tidy it up

John
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Patternmaker

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Re: Soldering, help please
« Reply #14 on: February 07, 2011, 02:28:13 pm »

If its stainless wire use Silver Solder
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roycv

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Re: Soldering, help please
« Reply #15 on: February 07, 2011, 03:33:34 pm »

HI, I have used the brass ferrule system with stainless wire.  By the way I cut my own ferrules from tubing, much cheaper.
I feed the wire through the ferrule, loop through to the hook , and then tie 2 knots and leave 2 or 3 inches of wire spare, do not let it un-weave itself.
 
I then force the ferrule down over the cut spare wire and over the tied knot. You can pull on the shroud and the spare wire so that the knot does not displace. Then drip some super glue down the ferrule to clamp the knot.
Suggest you do a dry run first.

To make a nice finish get some white heat shrink tubing and put this on the shroud wire first, cut to size.  When all above finished  slide the heat shrink down over the ferrule and warm enough to shrink but not burn.

You could also follow full size practice by whipping some suitable thickness fine white cord and cover the whole join.

hope this helps, regards Roy

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Richard M

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Re: Soldering, help please
« Reply #16 on: February 07, 2011, 04:29:45 pm »

Thanks for all the advice.

I finally settled on a crimping tool from a good fishing shop together with what they sell as "Size 1 Crimps", something to do with Pike fishing I think.

Covered with heat shrink sleeving looks good and does the job.

One of these days I will have to learn to solder.

RichardM
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