First time...

First time...

Post by Stephe » Fri, 30 May 2003 20:31:06



Any suggestions for a first timer with electronics (altimeters)? I'm looking
for things as where to break things apart, where to mount charges, how to
build charges... Also, any help with Pyrodex?

--
Stephen Corban
NAR# 81338
GYRO# 1
If you build it, they will come
www.geocities.com/ilrocketboy
Tripoli Quad Cities

 
 
 

First time...

Post by Alex Merica » Fri, 30 May 2003 22:02:57


I like to build my altimeter bay in the middle of the rocket.  Apogee charge
separates the booster from the top, main charge separates the nose cone.  I
use a very simple design using a coupler to hold everything. I think
www.info-central.org has sample designs.  I use PML rivets to secure the fore
and aft tubes to the coupler/altimeter bay.  I use a wiring harness that is
the same on all my rockets so I can just unplug and then plug my altimeter in
any rocket.

I have not worked with Pyrodex, yet.  I hope to do ground tests next weekend.
  If the trick is confinement, I think I can use plastic vials with snap tops
(as I did for BP) and just secure the top with electrical tape.  I'll probably
use christmas lights to initiate the charge.  I THINK that is all unregulated.

Quote:

> Any suggestions for a first timer with electronics (altimeters)? I'm looking
> for things as where to break things apart, where to mount charges, how to
> build charges... Also, any help with Pyrodex?


 
 
 

First time...

Post by defaul » Fri, 30 May 2003 22:37:12


Stephen,   For a general question like this, I think the best answers come from face to
face contact and hands on experience.  If at all possible, hook up with two or more
electronics flyers at a launch and watch them prep their rockets.  Ask why they do things
different, everybody does to some extent.  There are so many variables it would be hard to
list.  Some variables are compatable with others, some are not.  Nine volt, watch
batteries, baggie charge, mid air frame ejection, flash bulb, drogueless, shear
pins...etc.

If ya got's a specific question, bring it on, but a general "how to" is a bit too general.

Steve "masking tape funnel, zipperless zero dead space, tubular nylon, electric match"
Bloom


Quote:
> Any suggestions for a first timer with electronics (altimeters)? I'm looking
> for things as where to break things apart, where to mount charges, how to
> build charges... Also, any help with Pyrodex?

> --
> Stephen Corban
> NAR# 81338
> GYRO# 1
> If you build it, they will come
> www.geocities.com/ilrocketboy
> Tripoli Quad Cities

 
 
 

First time...

Post by Larry W. Hardi » Sat, 31 May 2003 00:02:23


My first altimiter flight was the PML co-pilot in PML's CPR-3000 equipped
mini BBX.  Basically, I wanted something where somebody else had done all
the engineering so I could see how it worked before I started improvising.
Since them, I've done a scratch built Black Brant VI also using the CPR-3000
hardware.  You could save money building your own electronics bay, but I
figured it was worth it to have something with a proven track record the first
few times I flew electronics.

Larry

Quote:

> Any suggestions for a first timer with electronics (altimeters)? I'm looking
> for things as where to break things apart, where to mount charges, how to
> build charges... Also, any help with Pyrodex?

> --
> Stephen Corban
> NAR# 81338
> GYRO# 1
> If you build it, they will come
> www.geocities.com/ilrocketboy
> Tripoli Quad Cities

 
 
 

First time...

Post by Gary » Sat, 31 May 2003 07:35:05


Quote:

> Any suggestions for a first timer with electronics (altimeters)? I'm looking
> for things as where to break things apart, where to mount charges, how to
> build charges... Also, any help with Pyrodex?

RE: Pyrodex (a smokeless powder BP "substitute")

Try:

http://www.jamesyawn.com/ejection/index.htm

for an entertaining and informative, if not highly technical, ejection
test using smokeless powders.  He also has links to a couple other sites
looking at smokeless powder ejection charges.

--
Gary Bolles
BAR

To contact me; bollesg at attbi dot com