KISS is a good engineering practice. Its like that in HW and SW - the most
beautiful things
are those with all the BS removed.
On Thu, Jan 19, 2017 at 1:31 PM, R Dierking <applerocketry@xxxxxxxxxxx>
wrote:
OMG, Chris Kobel is another twister. Well, it’s out there now thanks to
RickyLeaks. Like when I saw James D (one of the most technical savvy
people I know), twist the arming wires to his electronics and stick them in
a two stage rocket. I thought, OMG, my buddy is a bohemian.
So, perhaps shoe strings and belts would even been too complicated for you
guys. Yup, slip on shoes and elastic waist bands for you. 😊
So twisting wires or switches…Can you twist and untwist two wires 300
times without a failure?
LOL
Richard
*From: *Chris J Kobel <chris.j.kobel@xxxxxxxx>
*Sent: *Thursday, January 19, 2017 1:13 PM
*To: *roc-chat@xxxxxxxxxxxxx
*Subject: *[roc-chat] Re: Twisting Wires
Full disclosure, I use switches on most of my dual deploy rockets. I had
one micro slide switch fail, thank goodness for independent, redundant
electronics. I’m twisting wires because I haven’t bothered (yet) to
replace the failed switch J
Chris
*From:* R Dierking [mailto:applerocketry@xxxxxxxxxxx]
*Sent:* Thursday, January 19, 2017 1:04 PM
*To:* Chris J Kobel <chris.j.kobel@xxxxxxxx>; roc-chat@xxxxxxxxxxxxx
*Subject:* RE: [roc-chat] Twisting Wires
I hate the twisting wire technique. Yet, some people that I look up to
actually do this. It’s just so barbarian. And, then they stick the wires
back in a hole in the airframe. Freakn crazy dude.
I imagine someone twisting some wires on a Falcon 9 before launch.
Hopefully they would read the technical manual on how to do it correctly.
If it was at JPL, they would have the technician twisting the wires while
two engineers watch. LOL
Richard Dierking
*From: *Chris J Kobel <chris.j.kobel@xxxxxxxx>
*Sent: *Thursday, January 19, 2017 12:48 PM
*To: *roc-chat@xxxxxxxxxxxxx
*Subject: *[roc-chat] Twisting Wires
More and more, this conversation is encouraging me to keep twisting my
wires together. Somebody mentioned it previously…is there a “right” way to
do it, to go along with all the wrongs ways I’ve tried?
(I do try to insulate the twisted wires and tie a piece of string on them
so I can fish them out of a breather hole to disconnect them after a
flight…)
Chris Kobel
*From:* roc-chat-bounce@xxxxxxxxxxxxx [mailto:roc-chat-bounce@
freelists.org <roc-chat-bounce@xxxxxxxxxxxxx>] *On Behalf Of *R Dierking
*Sent:* Thursday, January 19, 2017 12:40 PM
*To:* Kenneth Brown <ken@xxxxxxxxxxxxx>; roc-chat@xxxxxxxxxxxxx
*Subject:* [roc-chat] Re: Switch Warning - Schurter 110-220
Sorry if there was a misunderstanding Ken. I don’t routinely have the
soldering iron dwell on the contacts that long. Just trying to figure out
potential failure modes for this switch. The objective is to provide
information to people that have already used these switches in projects,
and maybe others that will use them in the future. Verses, “hey, don’t use
these switches.”
For example: If someone is planning on using one of these switches, they
could have good information about how to install them and solder the
contacts. Also, and I think this is very important, they should be advised
on how to check the installed switch for problems before flying their
project.
This helps not only for the case of using these switches, but for using
other electronics as well. Having detailed information on the device, and
testing before flying a project is always a good idea.
Richard Dierking
