Looks like the San Marcos store for me.
Are Cat 3 test leads OK for our purposes? Perhaps I just need better test
leads with clips?
From: Adrian P. Bailey<mailto:adrian@xxxxxxxxxxxxxxx>
Sent: Tuesday, January 24, 2017 11:25 AM
To: roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>; Chris J
Kobel<mailto:chris.j.kobel@xxxxxxxx>
Subject: [roc-chat] Re: Resistance for Electric Matches
Fry's in Woodland Hills has quite a selection. Check online - it will tell you
what they have in the store nearest you: http://www.frys.com/
From: roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@xxxxxxxxxxxxx] On ;
Behalf Of R Dierking
Sent: Tuesday, January 24, 2017 11:20 AM
To: Chris J Kobel <chris.j.kobel@xxxxxxxx>; roc-chat@xxxxxxxxxxxxx
Subject: [roc-chat] Re: Resistance for Electric Matches
OK, JK, but RSO's, if you ever see wires sticking out of one of Chris's
rockets... ?
He does know his igniters!!!
So, glad I asked about this before conducting my ground test. I had 2 matches
with 1.6 ohms and one that was 3.2 ohms that would have invalided my test.
Particularly bad if I would have found out about this later.
Learned: When doing multiple charges in series measure each match (or
igniter), and then all together to check for problems.
Going OT a bit, but does a place like Fry's have a good selection of meters? I
wonder if I can get a meter that reads resistance better. Maybe the leads have
to be higher quality too?
From: Chris J Kobel<mailto:chris.j.kobel@xxxxxxxx>
Sent: Tuesday, January 24, 2017 10:53 AM
To: R Dierking<mailto:applerocketry@xxxxxxxxxxx>;
roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>
Subject: RE: [roc-chat] Re: Resistance for Electric Matches
Sticks and stones....
From: R Dierking [mailto:applerocketry@xxxxxxxxxxx]
Sent: Tuesday, January 24, 2017 10:51 AM
To: Chris J Kobel <chris.j.kobel@xxxxxxxx<mailto:chris.j.kobel@xxxxxxxx>>;
roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>
Subject: RE: [roc-chat] Re: Resistance for Electric Matches
Wow, not bad for a wire twister Chris. ?
From: Chris J Kobel<mailto:chris.j.kobel@xxxxxxxx>
Sent: Tuesday, January 24, 2017 10:33 AM
To: roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>
Subject: [roc-chat] Re: Resistance for Electric Matches
Some info on igniters that I gathered a few years back.
Chris
From: roc-chat-bounce@xxxxxxxxxxxxx<mailto:roc-chat-bounce@xxxxxxxxxxxxx>
[mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of R Dierking
Sent: Tuesday, January 24, 2017 10:08 AM
To: Andrew Wimmer <xenonrocket@xxxxxxxxx<mailto:xenonrocket@xxxxxxxxx>>;
roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>
Subject: [roc-chat] Re: Resistance for Electric Matches
To be honest, I don't know the brand. They are not in the box. They are
however the same color lead wire (black) and appear to be the same make. A
single one is 3.2 ohms.
Richard
From: Andrew Wimmer<mailto:xenonrocket@xxxxxxxxx>
Sent: Tuesday, January 24, 2017 9:56 AM
To: roc-chat@xxxxxxxxxxxxx<mailto:roc-chat@xxxxxxxxxxxxx>
Subject: [roc-chat] Re: Resistance for Electric Matches
What brand electric match?
3 in series should have 3 times the resistance of a single match.
http://www.pyromate.com/Basics-of-Electrical-Firing.htm
-Andrew
On Tue, Jan 24, 2017 at 9:45 AM, R Dierking
<applerocketry@xxxxxxxxxxx<mailto:applerocketry@xxxxxxxxxxx>> wrote:
What's a good range for the resistance of electric matches?
For my project, there will be 3 parachutes deployed from separate side-bays and
initiating the charges at apogee.
Connecting the matches up in series and testing today.
I know the resistance will go up with the series connections, but would like to
get an idea what the range should be.
Thank you,
Richard Dierking
