nuckolls.bob(at)cox.net
Guest
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 Posted: Thu Nov 13, 2008 2:03 pm Post subject: Crimp terminals with built-in shrink |
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At 12:30 PM 11/10/2008 -0600, you wrote:
| Quote: |
<nuckolls.bob(at)cox.net>
At 09:42 AM 11/10/2008 -0800, you wrote:
>
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>Hey all -
>
>I'm sure the Connection mentions something about this, but I don't
>have it in front of me (i should know better than to leave it at
>home!) and as I was getting ready to order some shrink tubing, I ran
>across these crimp connectors with shrink tubing already on them.
>They're
>here: http://cableorganizer.com/heat-shrink/heat-shrink-connectors.html
>
>What's the deal with these? Are they awesome? If not, why not?
>Also, is there a recommended material type for shrink tubing? Sorry,
>I feel like I could be looking these things up in the Connection, but
>as I said, I'm sitting here daydreaming instead of working. 
>
>any help would be appreciated!
You won't find them in the book . . . for several reasons.
These are but one example of many that are offered in
the marketplace and I have no personal experience with
them or knowledge about them. I've tried similar products
from various sources over the years and discarded all of
them. They tended to be bulkier and/or less secure in the
wire grip than the PIDG butt splices I stock and use most.
These are a bit different so I'll get some, see what
they look like installed and how well they work. Two
packages of 50 pcs + shipping comes to $37 so they're
37-cents each at this quanity.
They tend to be expensive on a joint-for-joint basis
compared to simply adding heat shrink to less expensive
or more compact techniques. I can't tell you that these
particular products are bad or to be avoided. But you'll
need very few of them to assemble your airplane. In
terms of performance, they'll work no "better" than
the process described here:
http://www.aeroelectric.com/articles/PM_Solder_Sleeve/PM_Solder_Sleeve.html
I'll give them a try and report back.
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I received my order for splices cited above. The splices for
20 to 12AWG wires can be installed with our favorite el-cheeso
crimp tool.
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=97420
The shrink tubing has good shrink ratio and does feature
a dual-wall sealant that manages to come down sufficiently
tight on the M22759 Tefzel (smaller diameter than most
automotive wires).
http://aeroelectric.com/Pictures/Terminals/Krimpa-Seal_Butt_Splice.jpg
I was unable to deliver consistent crimps on the 22-24AWG
splices with any tools I have. I note that the supplier does
offer a tool tailored to the product . . .
http://cableorganizer.com/heat-shrink-crimping-tool/
. . . but the price is disappointing.
The finished splices have about the same bulk as the
legacy PIDG window splices at about 2/3 price per
splice.
Assuming your tool of choice produces an adequate crimp,
these devices perform as advertised.
Bob . . .
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