[Milsurplus] [ARC5] Wire

J. Forster jfor at quikus.com
Thu Sep 15 22:14:00 EDT 2011 

> The outer coat is to reduce friction for pulling through conduit.

Yes.

I've seen 16 and 18 AWG, but yeah, we get it 10,000 feet at a time on big
spools.

MTW may be available.

Yes,
> printed with rating, it is required by the inspectors. If you are having
> trouble
> getting to sleep you can have a conversation about what the rating means
> with my
> safety and compliance guy.

Nah. I just read the NEC.

-John

================
>
>
> On 9/15/2011 9:35 PM, J. Forster wrote:
>> Yes and no. It can be either nylon coated or not. Look at the spools of
>> THHN at Home Depot or a similar place. THHN is mostly a temperature
>> spec.
>>
>> There are other options like MTW.
>>
>> Also, THHN in sizes smaller than #14 is hard to get. It may be available
>> through an electronics supplier, but you probably have to buy 1000'
>> minimum.
>>
>> Finally, modern THHN is printed along its length. WW II wire was
>> generally
>> not, or if it was, it had circuit numbers on it.
>>
>> Best,
>>
>> -John
>>
>> ================
>>
>>
>>> Nylon coated PVC sounds like THHN electrical conduit wire.
>>>
>>>
>>>
>>> On 9/15/2011 9:12 PM, J. Forster wrote:
>>>> YW. It looks OK for chassis wiring, but, sadly, not for cables. I'm
>>>> not
>> sure there are any good alternatives to stranded Teflon in Expando
>>>> for cables. The nylon coated PVC seems to be very hard to get.
>>>> -John
>>>> ===============
>>>>> It may not be cheap but it's a heck of a lot easier.  Thanks, John!
>> Best regards,
>>>>> Michael, WH7HG ex-K3MXO, ex-KN3MXO, WPE3ARS, BL01xh ex-Mensa A&P PP
>> BGI
>>>>> I am me.  I’m the only one who’s qualified.
>>>>> http://www.nationalmssociety.org/chapters/NTH/index.aspx
>>>>> http://wh7hg.blogspot.com/
>>>>> http://kludges-other-blog.blogspot.com
>>>>> Hiki Nô!
>>>>> -----Original Message-----
>>>>> From: J. Forster [mailto:jfor at quikus.com]
>>>>> Sent: Thursday, 15 September, 2011 14:50
>>>>> To: h Kludge
>>>>> Cc: arc5 at mailman.qth.net; milsurplus at mailman.qth.net
>>>>> Subject: Re: [ARC5] Wire
>>>>> Not cheap, but:
>>>>> http://tubesandmore.com/Catalog/page_084_085.php
>>>>> -John
>>>>> ===========
>>>>>> In looking at the fabric over rubber wiring used way back when,
>>>>>> there
>> seem
>>>>>> to be two different flavors, one that has the fabric kind of loose
>> and
>>>>>> easily frayed and the other has the fabric somehow bonded to the
>>>>>> rubber
>>>>>> which reduces fraying and makes for neater work.  Since I’m going to
>>>>>> try
>>>>>> my
>>>>>> hand at making fabric over something wire in an attempt at making
>>>>>> things
>>>>>> appear even more authentic*, it would be nice to know how it was
>>>>>> done
>> originally.  “Something” may wind up plastic, vinyl or Teflon
>> dependent
>>>>>> on
>>>>>> what I can get that looks right as to overall bulk.
>>>>>> * I may even try lacing in the tracers which would probably not be
>>>>>> good
>>>>>> therapy when they take me back to psych lockdown as a result of this
>> activity.  Nor would basket weaving.  :-)
>>>>>> The way I think this will work is to use white older type flat
>> shoelaces,
>>>>>> wet them and force them over forms (read as: dowels) while they dry
>> to
>>>>>> reduce or take out the creases.  (This may also require a bit of
>> ironing.)
>>>>>> After that, introduce them to some RIT dye to get the right base
>>>>>> colors
>>>>>> for
>>>>>> color coded wiring and put them back over the forms to dry.
>>>>>> Assuming
>> (and
>>>>>> we all know what that word means) this works as planned, I may
>>>>>> actually
>>>>>> try
>>>>>> lacing in the tracers although it would be insanely time&   labor
>> intensive
>>>>>> and only a few people would actually realize that the tracers are
>> supposed
>>>>>> to be there.  I think all of them are in these lists.  Anyway, a
>>>>>> little
>>>>>> yellow varnish to give it the official MFP look and I should have
>> wire
>>>>>> good
>>>>>> for open cables.
>>>>>> If the basic project goes well – i.e., the part about using
>>>>>> shoelaces to
>>>>>> make a reasonable facsimile of WW II cloth covered wire – the next
>>>>>> step
>>>>>> would be to use the same basic technique to make vinyl over white
>>>>>> woven
>>>>>> fabric over vinyl wiring used in later aircraft.  I’m not sure I
>>>>>> know
>> what
>>>>>> to seal the fabric with but after that’s done the top coat can be a
>>>>>> dip
>>>>>> in
>>>>>> Dip-It clear vinyl.  If this works as I think it will, this will
>> solve
>>>>>> the
>>>>>> problem of wiring up the Type 12 equipment with more or less period
>> appropriate open wire.
>>>>>> Using shoelaces presents two problems right off.  First, the prices
>> of
>>>>>> good
>>>>>> ones that don’t have the funky seams on each edge and are small
>> enough
>>>>>> have
>>>>>> gone out of sight.  Second, it limits the size of any given run to
>> the
>>>>>> length of the longest laces I can find.  On the other hand, for
>> everything
>>>>>> except the SCR-A*-183 I’ll be using open wiring as much as possible,
>> mostly
>>>>>> because I like it but also because a good number of my connectors
>>>>>> are
>> for
>>>>>> open wiring and it’s easier to convert the ones that aren’t to that
>>>>>> than
>>>>>> it
>>>>>> is the ones for open wiring to shielded cable.
>>>>>> So there it is.  Thoughts?
>>>>>> Best regards,
>>>>>> Michael, WH7HG ex-K3MXO, ex-KN3MXO, WPE3ARS, BL01xh ex-Mensa A&P PP
>>>>>> BGI
>>>>>> I am me.  I’m the only one who’s qualified.
>>>>>>    <http://www.nationalmssociety.org/chapters/NTH/index.aspx>
>>>>>> http://www.nationalmssociety.org/chapters/NTH/index.aspx
>>>>>>    <http://wh7hg.blogspot.com/>   http://wh7hg.blogspot.com/
>>>>>>    <http://kludges-other-blog.blogspot.com/>
>>>>>> http://kludges-other-blog.blogspot.com
>>>>>> Hiki Nô!
>>>>>> ______________________________________________________________ ARC5
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