I have been following this thread.  I have one thing to input.  ONLY use heavy 
duty switches.  I used a push-button switch I bought from Apogee.  It worked 
fine for my test launch and my L2 launch.  But when I flew my rocket on the 
motor I designed it for, a 6 grain K motor, the switch cycled when the apogee 
(9800’) drogue deployment occurred.  I lost contact with the TeleMetrum; and 
the rocket came down fast.  It took 2 days and some help to find it.  The 
rocket it took a year to build, was a total loss.  TI think the TeleMetrum 
survived intact and fully functional.  I will never use pushbutton switches 
again.

 

From: altusmetrum [mailto:[email protected]] On Behalf Of Terry
Sent: April 17, 2017 14:41
To: [email protected]
Subject: Re: [altusmetrum] AltosDroid Anomaly?

 

Yes.  Consider yourself lucky.   You are getting to practice with using your 
system before you really need it.  When it does come down out of sight a mile 
away you'll be ready.

Terry

 

On 4/17/2017 3:32 PM, Bdale Garbee wrote:

Steve Saner  <mailto:[email protected]> <[email protected]> writes:
 

But in both cases 
they have landed less then a 1/4 mile away and were spotted before 
landing. I guess next time I'll have to do it blind folded and tell 
everyone else to shut up ;-)

 
Be careful what you wish for!  The rocket gods have been known to
"reward" such hubris with things like broken battery or switch wires at
apogee... 
 
[ says the man who's been there and done that ]
 
Bdale






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