[aprssig] Amazing resistors

n4lbl alan.schulman at gmail.com
Mon Sep 8 14:33:04 CDT 2014


In the late '50s and early '60s I used Jetex rocket fuse wire.  There was a
very fine copper wire inside and 12 V. ignited it reliably.  I put the fuse
lengthwise through black powder in a paper tube.


On Mon, Sep 8, 2014 at 12:26 PM, Steve Noskowicz <noskosteve at yahoo.com>
wrote:

>
> If you saw those paper match rockets I first saw back in the 60's...I used
> some small wire to ignlte them.
> 73, Steve, K9DCI
>
>
>    *From:* "Curt, WE7U" <curt.we7u at gmail.com>
> *To:* TAPR APRS Mailing List <aprssig at tapr.org>
> *Sent:* Monday, September 8, 2014 10:59 AM
> *Subject:* Re: [aprssig] Amazing resistors
>
> On Sat, 6 Sep 2014, Al Wolfe wrote:
>
> >  In my mis-spent youth I was involved with many projects that required a
> > squib, that is, an electrical igniter  After a lot of trial and error we
> > settled on some very thin steel wire. Basically, we found some picture
> > hanging wire and discovered it was seven-stranded. Unwinding one of the
> > strands gave us a single thin steel wire that was perfect for our
> projects.
> > It would instantly explode with 120 volts applied and glow brightly at
> 12
> > volts before oxidizing and disintegrating.
>
> Hah!  In junior high or early high school I figured out that a 30-gauge
> wire-wrap wire made a better igniter for my Century rocket engines than the
> expensive igniter wires they sold...  Saved money -and- made every launch
> successful.  I also wired my launcher to the family's car battery instead
> (launched from the driveway), which also increases reliability.
>
> I claim to know nothing about blowing up resistors on purpose...  Really.
>
> --
> Curt, WE7U.        http://wetnet.net/~we7u
> APRS Client Capabilities:  http://wetnet.net/~we7u/aprs_capabilities.html
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