[roc-chat] Re: Dual Deployment advice

For ground testing, do not lay it on a wooden chair with the fins
resting against the arm of the wooden chair!  I did that and the force
of the ejection charge not only separated the rocket, it also blew the
arm off of the chair (the fins pushing backwards tore the arm off).

After repairing the4 chair before my wife got home, I simply laid the
rocket on the ground.

Also, do NOT put anything inside the altimeter bay that is loose.  I
thought I would put a weight inside the altimeter bay to simulate the
weight of the altimeter and the sled.  Since that was loose, it was free
to move around and the force of the ejection charge caused it to rip all
of the wiring and switches in the altimeter bay apart. Another valuable
learning experience.

At lease I didn't have kids hold it while I fired the charge.

Mike 

Michael Lesnick
Axiom Healthcare Group
18135 Santa Lauretta Cir
Fountain Valley, CA 92708
714-594-5720 - Office Phone
714-323-5968 - Cell
714-968-7076 - Fax
MikeL@xxxxxxxxxxx




-----Original Message-----
From: roc-chat-bounce@xxxxxxxxxxxxx
[mailto:roc-chat-bounce@xxxxxxxxxxxxx] On Behalf Of Bob Brown
Sent: Thursday, June 14, 2012 4:49 PM
To: roc-chat@xxxxxxxxxxxxx
Subject: [roc-chat] Re: Dual Deployment advice

Thanks everyone for your deployment tips. Really helpful. The rocket in
question is a Madcow fiberglass Black Brant. 3.9"  
Regarding ground testing. What methods are used to "hold" the rocket?
What is the best way to set off the deployments on my altimeter when on
the ground? Thanks again.

Bob

On Jun 14, 2012, at 12:24 AM, Mike Riss wrote:

> --- On Wed, 6/13/12, Bob Brown <cineflex@xxxxxxx> wrote:
> 
>> . . .but am not sure of a design for holding and igniting the BP. 
>> Any advice about these or other systems would be appreciated
> 
> Here's some info on do-it-yourself methods:
> 
> http://www.info-central.org/?article=302
> 
> http://www.wimpyrockets.com/page16.html
> 
> http://www.thefintels.com/aer/rocketelectronics.htm
> 
> And, I'll add to the question about which kit:  and what altitudes?
> 
> Mike
> 
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Bob Brown
http://us.imdb.com/name/nm0113141/
http://www.tripoli.org/  #9186-L3



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