[Elecraft] OT: APP strain relief

[EricJ]

{Directed at no one in particular. Don't take it personally, anyone}

I think someone already mentioned doubling the stripped wire back over 
the insulation, then putting that in the APP terminal. I'm pretty sure 
that's what Anderson recommends. But then you have to PROPERLY crimp it, 
not solder it. Do that and you won't need strain relief in ordinary service.

So treat yourself. West Mountain has an EXCELLENT crimper good for all 
three APP terminals, and as quality crimpers go, it's dirt 
cheap...$40...the price of two large pizzas. Anderson has one too, but 
you need a credit check to buy it. I've done hundreds of crimps with the 
West Mtn crimper for ham, auto and R/C use. Soldering APPs is ridiculous 
and produces an inferior connection that NEEDS strain relief. You select 
a stranded wire, then wick solder up it to make it a solid wire. That's 
nuts.

I've heard from lots of R/C people that crimping makes an inferior 
connection and the connection should be soldered as well. Tell that to 
Mercedes or any quality auto or motorcycle manufacturer. Except for PC 
boards, just try to find a soldered joint in an automobile of any 
quality. You won't.
Everything is crimped. I don't know for sure, but I'd bet all aircraft 
connectors are crimped. I bet the SR-71 connectors are all crimped. 
Probably the Shuttle too. Shouldn't that be good enough for a 12 volt 
ham rig?

Crimping isn't inferior. Crimping with crap tools is inferior.

Well, that feels better.

Eric
KE6US
K1, KX1, K2




On 5/2/2013 4:44 PM, david Moes wrote:
> For the fine wires, before crimping  I slide a short length about half 
> to 3/4 inch length of shrink tubing with a diameter just big enough to 
> fit over the crimped end on each lead    then I slide another piece of 
> shrink tubing over both wires about 2 inches long and slide it out of 
> the way for now.         once the crimp and soldering is done I slide 
> the short tubing so that it is just covering the crimp then shrink 
> it   then I slide the terminals into the connector body and join the 
> two  together and line them up.    Then I slide the longer shrink that 
> covers both wires as close to the APPs as I can and shrink it.   It 
> makes a tidy strain relief    As a side note I never use the pins to 
> hold the connector pairs together   I find that they can still come 
> apart     Crazy glue does  a much better and more permanent job.
>
> 73  Dave  VE3DVY
>
>   .  On 4/24/2013 17:20, ab2tc wrote:
>> Hi all,
>>
>> I have recently converted more or less completely to Anderson Power 
>> Poles
>> for all my power supply needs. I use an 8-way "hub" from Powerwerx as my
>> "distribution center". No fuses as the switching power supplies are 
>> current
>> limited and probably failsafe in the event of most electrical component
>> failures. For the big stuff, radios with #12 power wires I am not  
>> worried
>> about the lack of strain relief on the connectors. But for the flimsy 
>> power
>> cables supplied with accessories like my KAT500, LP-100A, Lantronix 
>> serial
>> servers I am. Has anybody found a good solution for this? Should I 
>> just fill
>> the back of the connectors with epoxy or is there a better way?
>>
>> Knut - AB2TC
>>
>>
>>
>> -- 
>> View this message in context: 
>> http://elecraft.365791.n2.nabble.com/OT-APP-strain-relief-tp7573006.html
>> Sent from the Elecraft mailing list archive at Nabble.com.
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