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View Full Version : [How-To]: 'Cocker Low Pressure Gauge Tool



Tesko
02-25-2009, 07:47 AM
Thought I'd share. This is a tool consisting of, in my case, a single piece of machined aluminum as well as several fittings and a length of standard pneumatic hose.

The main fittings are a #10-32 to 1/8" OD Slip fit connectors, a pair of them, one side to connect the existing hose, and the other fitting on the opposite side with a length of hose to connect to the fitting (be it the LPR, 3-way, RAM, Solenoid, what have you).
Pic: http://www.palmer-pursuit.com/cart/images/large/FITT105_LRG.jpg
(available from Palmers -> http://www.palmer-pursuit.com/cart/index.php?main_page=product_info&cPath=19&products_id=105)


Of course we need a gauge to read the pressure, 0-100psi will do the trick, and since the whole name of the game is accuracy, I went with an Ashcroft gauge. They're higher quality and accurate within 2%, sporting standard 1/8"-27 NPT threads.
Pic: http://www.palmer-pursuit.com/cart/images/large/online-stuff2007%20465_LRG.jpg
(0-100psi version not pictured, I know x_x)
(available from Palmers -> http://www.palmer-pursuit.com/cart/index.php?main_page=product_info&cPath=15&products_id=70)


The last main piece I opted for is a 1/8"-27 NPT bleeder valve, so you can easily and safely de-gas after you turn off your gas source. Push-activated and nice and compact, rated to 200psi, plenty for this situation.
Pic: http://www.palmer-pursuit.com/cart/images/large/fitting-pressure-bleeder_LRG.jpg
(available from Palmers -> http://www.palmer-pursuit.com/cart/index.php?main_page=product_info&cPath=21&products_id=115)


Good to note that the hosing im quoting as "standard" in this case, is 1/8" OD 1/16" ID pneumatic tube that we're all accustomed to when it concerns Autocockers. Always handy to have some extra on-hand, and it's cheap.
(available from Palmers -> http://www.palmer-pursuit.com/cart/index.php?main_page=product_info&cPath=16&products_id=73)

Aside from the piece of stock and it's subsequent machining, the fittings, gauge, and a foot of hose will run you just shy of $40 from PPS, before shipping.

Here's what I did;

- Started with 1.5" x 1.5" T6-6061 Aluminum
- Saw cut a 3/4" section
- Deburred
- Drilled a thru-hole (Hole 1) with a #21 (0.159") drill for #10-32 threads
- Drilled a blind-hole (Hole 2) with the #21 drill to 3/4" depth
- Drilled a blind-hole (Hole 2) with an "R" (0.339") drill for 1/8"-27 NPT threads to 5/8" depth
- Drilled a blind-hole (Hole 3) with the "R" drill to 3/8" depth
- Tapped all holes
- Deburred tapped holes
- Cleaned all surfaces on a belt grinder


P.S. I'm not trying to advertise for PPS, it's just one of my go-to places for paintball-related pneumatics.

Tesko
03-04-2009, 08:31 PM
Palmers shipment came in today, so I finished her up;
http://members.shaw.ca/azrael69/lpgauge1.JPG
http://members.shaw.ca/azrael69/lpgauge2.JPG

PsYcHoHoLiC
03-04-2009, 09:28 PM
ok my question is what and where do you hook it? from the lpr to the 3-way?

TencenT
03-04-2009, 09:34 PM
ok my question is what and where do you hook it? from the lpr to the 3-way?

exactly, you want it as close to the LPR as possible to get the most accurate reading. The relief valve is awesome btw, makes doing adjustments super easy I would imagine.

blackmagic71
03-07-2009, 06:55 AM
Wow Tesko, nice work!

Would you consider selling these to those of us that are extremely limited in our access to machine tools/adequate tools in general?

cockerfanatic
04-15-2009, 03:33 AM
Wow Tesko, nice work!

Would you consider selling these to those of us that are extremely limited in our access to machine tools/adequate tools in general?

good ?

Tesko
08-28-2009, 06:06 AM
It's taken me forever to update this, but I finally got a chance to try this tool out last weekend, worked like a charm! I'll be cranking some out this fall (sans-fittings) and hooking people up who asked all those months ago.

Tesko
03-15-2012, 05:46 PM
Adding some fresh pictures:
http://i.imgur.com/Yr2CM.jpg
http://i.imgur.com/glepd.jpg