rparigoris wrote:
> That said I would like to visit why as you indicate a high resistance joint
> will
in fact occur with a soldered first, then crimped joint? Please elaborate,
as I am not quite certain as to the why after I got to thinking about it.
Consider solder as some kind of liquid. It moves over time, and gives
way to any stresses exercised on it. Crimping is a stress, and the
solder will slowly "flow" away under it. This process may take months or
even years, but it will move away finally.
If you crimp something, the connection is made by clamping two or more
metals together. If one of the metals involved is solder and gives way
over time, it compromises the entire "clamp", the whole thing loosens up.
> Thus wire is a pretty darn good fit. On one of my sample pieces I was fooling
with I soldered through a 1/8" hole and allowed solder to flow till I just saw
it out wire end.
> Just for ha has I tried a crimp on it. This is not something I plan to do on
the "real deal", but when I crimped the sample it seemed to work quite well
meaning
that I think the solder joint under the crimp did not get too disturbed,
Just give it some rest, and re-evaluate the sample next year and see how
tight it is by then.
> Again strictly a hypothetical case, this joint will be seeing cranking amps of
~ 50 amps for not very long, and probably a continuous drain of under 10 amps
for longer than an hour, and charge max. of lets say best case 40 amps engine
at take off power with SD 20S and internal generator roaring, and perhaps 100
amps for a very short time if I was desperate enough to use a super automobile
for a jump on a completely dead battery.
In this case it may not be harmfull, but still the solder doesn't do any
good.
--
Frans
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