Tiny vacuum pump

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

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

In rec.aviation.owning Mark Mallory wrote:
: Mike: ask Ron Jones about how we made a vacuum pump out of an old Briggs and
: Stratton lawnmower engine (we were trying to make our own freeze-dried food...)

: Probably not the most time/cost-effective solution, but we sure had fun!

: Mark/C182L

Probably like my dad's 1939 Oliver 60 tractor. It has a stopcock
on the intake manifold for milking one cow at a time if the electricity
went out. Probably too big to fit on your desk though...

-Cory

--
************************************************** ***********************
* The prime directive of Linux: *
* - learn what you don't know, *
* - teach what you do. *
* (Just my 20 USm$) *
************************************************** ***********************

In rec.aviation.owning 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.

I've actually got one of these at home. I found it from a pile of
surplus equipment. It doesn't pull much vacuum, but it basically is an
aquarium pump. I'll try to find a model number on it and report back.

-Cory

************************************************** ***********************
* The prime directive of Linux: * * - learn what you don't know, * * -
teach what you do. * * (Just my 20 USm$) *
************************************************** ***********************

Jim, Get a grip on yourself--or better ,one of those little , or medium size rubber
bulb blower thingies, (they have a one way check valve in each end) or even a plastic
gas-syphon hose bulb---THINK OF THE ELECTRICITY YOU WILL SAVE, ---jERRY

wrote:

In rec.aviation.owning 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.

I've actually got one of these at home. I found it from a pile of
surplus equipment. It doesn't pull much vacuum, but it basically is an
aquarium pump. I'll try to find a model number on it and report back.

-Cory

************************************************** ***********************
* The prime directive of Linux: * * - learn what you don't know, * * -
teach what you do. * * (Just my 20 USm$) *
************************************************** ***********************

wrote:

In rec.aviation.owning Mark Mallory wrote:
: Briggs and
: Stratton lawnmower engine (we were trying to make our own freeze-dried
: food...)

Probably like my dad's 1939 Oliver 60 tractor. It has a stopcock
on the intake manifold for milking one cow at a time if the electricity
went out. Probably too big to fit on your desk though...

In our case, we figured that for our purpose we needed a pretty high vacuum -
like 1/200 atm or so (below the triple point of water.) Because the pressure
depends on the compression ratio, the original Briggs & Stratton cylinder head
wouldn't work; we replaced it with our own cylinder head made from 3/8" aluminum
plate, with "flapper valves" made from an old inner tube (this gave a
near-infinite compression ratio.) We installed a 7 inch pulley on the
crankshaft and turned the B&S with an electric motor.

We were able to inflate balloons in a mason jar with the thing, but that was
about it. I seem to remember we tried freeze-drying some banana slices, but the
results weren't too impressive.

Take one of these apart:

http://www.ballsonline.com/details.a...t=136&path=136

then reverse the little flapper valve to make it suck instead of blow...

--
Dan D.



..
"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

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.