Homemade Altitude Chamber??

Use a vacuum pump and a vacuum guage.

There used to be a bit on Paul Kelly's website, on the page about his homemade altimeter. Unfortunately his site seems to have disappeared. Anyone know where its gone, if it even still exists?

It used to be at:

They are no longer posting information. He is still on arocket, last I knew.

Joel. phx

Chuck, Peter Alway posted plans a few months ago for a simple, easy to make barometric calibration device. I built one and it works like a charm. You'll need an airtight jar (I used a spaghetti sauce jar), some fish tank tubing, and some silicone caulk.

Just run a Google newsgroup search for "Peter Alway altimeter jar" for complete instructions.

I'll post a pic of mine on a.b.m.r.

shockie B)

I especially like Step 1. Eat all spagetti sauce from jar.

I think that maybe I'll make mine from pint beer bottles. :-)

cp

You mght need multiple vacuum collection vessels.

Jerry

My first chamber was a Mickey's bottle :)

Worked great for my ALTS2!

Ted Novak TRA#5512

I used my buddy's vaccuum chamber that he uses to degas propellant. :) I've got my own chamber now, but I haven't bought an altimeter since I finished it.

tim

Use a vacuum cleaner. It will pull the pressure down to the equivalent of

Arnold

Tim wrote in news:D4b5b.173$y6.86 @bignews5.bellsouth.net:

Yeah, well my buddy uses his to renoir propellant.

len.

On a dali basis? How high do his rockets gogh?

"BB" wrote in news:aVl5b.8979$ snipped-for-privacy@nwrddc02.gnilink.net:

To renoir propellant, you have noir it first, and let it sit for a day or two before you renoir it. So you can't do it dali, it may take manet days.

How high do they gogh? It depends on how much monet you have.

len.

This from a math wiz ;)

Jerry

Now, what's possed you to gauguin say such a thing? Only sisley boys worry about how much monet a rocket flight costs! Gogh figure. :-/

cp