Thanks Casey, I wasn't sure about the Q2g2. Hopefully they get here in time
:-)

 

 

 

  _____  

From: [email protected]
[mailto:[email protected]] On Behalf Of Casey Barker
Sent: Monday, July 16, 2012 8:44 PM
To: Altus Metrum
Subject: Re: [altusmetrum] couple questions

 

I think you solved your own problem with the antenna situation, but for what
it's worth, I asked a similar question to this list last year.  Your
solution is exactly what I ended up doing:  Extend it through the bulkhead,
then put a straw around it.  That has worked fine for me.  Either way, don't
bend it too much.

 

I have used Q2G2 igniters for charges and they worked great.  Just be
careful with them because they're very thin, solid-core wire, so they don't
take well to lots of flexing.

 

Casey

On Mon, Jul 16, 2012 at 6:38 PM, Clay & Carly Dunsworth
<[email protected]> wrote:

 

Does any one use the Q2G2 ignitors for ejection charges?

I am down to two ematches and ordered some Q2G2 in hopes of using them for a
few flights this Sunday.

Hopefully I can get them by Saturday afternoon for a bench test.

 

Second, is the antenna.? 

There are a few ways I can think of doing this. Some may be better than
others, but all have problems as I would see it.

 

My avionics bay is only 7in.  

 

1.      is it best to mount the altimeter the furthest aft I can, and bend
the antenna at the top.

Would protruding the forward bulkhead and allowing the antenna the extra 2"
enhance the link.?

 

My thoughts here, are that just bending the antenna, would be best, so that
it isn't damaged.  I usually pack dog barf, a quick link, and a hefty 2 gram
FFFFG charge. *54mm*

I don't think protruding into the payload bay would assist in any way as the
packing of the materials would bend the antenna.

 

 

2.      Mount the altimeter as far forward as possible. This would allow the
full length of the antenna to be above the bulkhead.

 

I think this would provide the best wiring setup, but again has the draw
backs of having the antenna in an active area, not safely in the av bay.

 

 

In the future, I can just make a longer e-bay. But this is a retrofit, to
lighten up my sons rocket, and use the stock coupler tube.

I welcome any comments.

 

 

Writing this, I think one of those clear poly antenna tubes from the RC toys
may be the ticket. I can even put a dap of epoxy on the end to seal it off.

Do the farthest back thing, and a short protrusion with the antenna tube.

 

 

Thanks,

 Clay

 

 

            


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