Tiny vacuum pump

"Jim Weir" wrote in message
news
That's how I seal food bags for freezing. Tellya what, put a little light
machine oil in a bag and try sealing it with a straw. Damn near choked me
to
death.

When I bag salmon for the freezer, I fill the small kitchen sink with water,
then submerge the bag in the water up to the lip. A quick zip and the bag is
closed. Not a big enough bubble left for a compass. You could use a
Tupperware container instead of the sink.

Rich S.

Anybody mentioned a refrigerator compressor? I used it to vacuum bagging
composites. You shouldn't drain the fluid from a filled system (ozon
killer) but if you get one from a bone yard that is already drained it
would make a low noise, low cost solution.

- Holger

Jim Weir wrote:

Does anybody have an idea on how to make a tiny little vacuum pump on the
order
of an aquarium pump or so that will draw just a few inches of water?
Preferably 110, but I can rig up a 12 volt supply if necessary.
...

Take the brake system vacuum pump from the back of the alternator on almost
any diesel light truck, 4wd, etc. For the level you are looking for you
could probably hand crank it with a lawn mower zip starter and use it's
return spring to set it for the next pull.

Depends on how green you want to be, you're both recycling and people
powering it!
;)
Bushy

Jim Weir wrote:
Does anybody have an idea on how to make a tiny little vacuum pump on the order
of an aquarium pump or so that will draw just a few inches of water? Preferably
110, but I can rig up a 12 volt supply if necessary.

The reason I say this is that I'm getting ready to pack a fairly large number of
bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a little
preservative oil, and then suck the baggie down with a football needle stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com


If you have compressed air already available, there are small venturi
vacuum generators you can use. They are just a tiny chunk of
aluminum with three 1/8" pipe threaded ports, air in, air out,
and vacuum. The one in my "solder sucker" pulls about a
26" vacuum and damn quick too! A "baggie" would be evacuated
almost instantly.

Tom Pappano, PP-ASEL-IA

On Sat, 17 Jan 2004 19:03:40 GMT, Tom Pappano
wrote:

Jim Weir wrote:
Does anybody have an idea on how to make a tiny little vacuum pump on the order
of an aquarium pump or so that will draw just a few inches of water? Preferably
110, but I can rig up a 12 volt supply if necessary.

The reason I say this is that I'm getting ready to pack a fairly large number of
bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a little
preservative oil, and then suck the baggie down with a football needle stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com


Those aquarium air pumps pull air from around the case.

How about placing one inside a cheapo tupperware-type container with a
"suck" port mounted on the container, you'd also need to run a "blow"
port from the pump's normal output through the container wall.

HTH


Mike Patterson
Please remove the spamtrap to email me.

Now *that's* clever. I admire clever.

Jim



Mike Patterson
shared these priceless pearls of wisdom:


-
-Those aquarium air pumps pull air from around the case.
-
-How about placing one inside a cheapo tupperware-type container with a
-"suck" port mounted on the container, you'd also need to run a "blow"
-port from the pump's normal output through the container wall.
-
-HTH
-
-
-Mike Patterson
-Please remove the spamtrap to email me.

Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

On Mon, 19 Jan 2004 17:45:27 -0500, Mike Patterson
wrote:

On Sat, 17 Jan 2004 19:03:40 GMT, Tom Pappano
wrote:

Jim Weir wrote:
Does anybody have an idea on how to make a tiny little vacuum pump on the order
of an aquarium pump or so that will draw just a few inches of water? Preferably
110, but I can rig up a 12 volt supply if necessary.


Just get a little "mityVac" hand pump used for testing vac advance etc
on cars.
Or if you really need it mechanized, make an adapter for your vacuum
cleaner with an adjustable bleed

The reason I say this is that I'm getting ready to pack a fairly large number of
bags with used but serviceable engine parts (valves, pistons, etc.) and I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a little
preservative oil, and then suck the baggie down with a football needle stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com


Those aquarium air pumps pull air from around the case.

How about placing one inside a cheapo tupperware-type container with a
"suck" port mounted on the container, you'd also need to run a "blow"
port from the pump's normal output through the container wall.

HTH


Mike Patterson
Please remove the spamtrap to email me.

Try using warm oil, not hot enough to melt through, roll the air out of
the baggie, seal it and as the oil cools, maybe it will pull it own
vaccuum...

Jimmy:
Use an old compressor from a freg. I have a high dollar Freon pump but
use the old G.M. compressor more.
Jim
"Jim Weir" wrote in message
...
Does anybody have an idea on how to make a tiny little vacuum pump on the
order
of an aquarium pump or so that will draw just a few inches of water?
Preferably
110, but I can rig up a 12 volt supply if necessary.

The reason I say this is that I'm getting ready to pack a fairly large
number of
bags with used but serviceable engine parts (valves, pistons, etc.) and
I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a
little
preservative oil, and then suck the baggie down with a football needle
stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

Try this: Put parts in bag, slowly lower bag into bucket of water until only
the top inch or so is above water (Don't get any water in the bag!) Zip bag
closed while most of bag is under water. Remove. The water pressure should
have forced 99% of the air out and you have a psuedo "sealed" part. The
reason I say this is that I'm getting ready to pack a fairly large
number of
bags with used but serviceable engine parts (valves, pistons, etc.) and
I'd like
to put each part in a "baggie" (sandwich bag or equivalent) along with a
little
preservative oil, and then suck the baggie down with a football needle
stuck
into the top closing mechanism just before sealing.

Thoughts?

Jim
Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com