They split in half!!
Ive also seen people turn them and they split in half.
Its designed for a wall socket!
Yes, do what Mike said - great plan; Never seen that fail ...
Sent from my iPhone
On Jan 12, 2017, at 7:22 AM, R Dierking <applerocketry@xxxxxxxxxxx> wrote:
Yes, I would like to try this out Mike, please send the file. I’ll look into
the materials available for the printer. I think I only have PLA at the
moment. How about ABS?
From: Mike Kramer
Sent: Thursday, January 12, 2017 7:09 AM
To: ROC Chat
Cc: ROC Chat; James Dougherty
Subject: [roc-chat] Re: Switch Warning with StratoLogger CF
richard,
I use micro switches with a screw to arm them. Uses a small hole in the side
of the rocket and makes it highly unlikely that the electronics can be in
advertently armed.
Easy to 3d print the mount for it. I will send you a file tonight.
Side note, don't use PLA ( unless it is the pro spec kind) for parts, it
can't survive the temperatures on the lake bed. I'm using PETG or Nylon.
Mike K
On Jan 12, 2017, at 6:47 AM, R Dierking <applerocketry@xxxxxxxxxxx> wrote:
I just purchased a PerfectFlite StratoLoggerCF altimeter and the
documentation came with a Switch Warning about failures of the 110/220
rotary switch that some people have been using for powering electronics.
High resistance and intermittent connection are noted in the document.
The document says “numerous reports” of failures, but I’m curious if this is
a problem with a group/lot of these switches or a pervasive problem to this
particular switch or rotary-type switches in general when used for rocketry.
I’ve used these switches in the past and tested the 4 I’m currently using
on two projects. I’m not detecting any problems with these switches.
Please keep in mind that there are several variations for this make of
switches. Here’s some info on what I have:
Schurter, Voltage Selector Switch, 2 Stages, Series-Parallel, SWA1 or SWA2
Also, it’s interesting that the spec sheet says that the lifetime is 300
operating cycles (without load).
So, does anyone have a personal experience that was bad with these switches?
Also, I think many people would be interested in recommendations on arming
switches both commercial and custom.
Thank you,
Richard Dierking
