Building a Reg tester?

[rsterne]

The extra volume won't matter in a regulator tester, other than you will have to use more air to fill it.... However, if you are using gauges connected to long, large diameter hoses to take pressure readings on a gun where you are trying to calculate the air usage (eg. to figure out the efficiency).... then you must use the total volume, not just that inside the gun....

Bob

[Nvreloader]

Bob
Thank you for that info,

About the only way to get a rough figures for total air volume of my hose/test set up,
is to measure the hole diameters, lengths of the fittings, (standard braided 6000 psi hoses, used for air rifles),
which will be smaller than the inside of the hose etc.

And I should get the total air volume for the pin valves etc,
for total length of the test rig etc, as I plan on using the test set up for figuring out air usage etc.

I sure don't want to cut these hose, to figure out the volume areas,
unless you have a better way, then I am all ears........

You enablers are way over my head, most of the time, using $50 words on a $5 guy. 
If you get my drift......

Tia,
Don

[sixshootertexan]

This is a suggestion for the hoses only. Fill them with water, then empty the water into something to measure it with (i.e. medicine cup ones that come with children's cough syrup). Do not get any water into anything else. Make sure to dry hoses afterwards.

[Ribbonstone]

PCP fans react to any hint of water like a vampire does to garlic/crosses; they just "hiss" and turn away.  Doesn't seem to really matter if the wet parts are 100% dry before being put back in use or not.

[sixshootertexan]

Yea I know that's why I said hoses only. I used this method when I built my latest rifle to backup the dimensional numbers just to make sure my math was correct.

[Jonah]

A simple method for those with compressors is to connect the output of your tank to the line coming from the compressor, open the tank valve and it will pressurize the compressor hose to the compressor gauge and show the tank output. Don't have to buy anything extra except maybe a male to male foster fitting.  Works for both of my 68 ci tanks. 

[Ribbonstone]

Do use water often, it's 1cc = 1gram is mighty handy for figuring out volume.  NO fears of water so long as the parts (including air tubes) are dry when you button everything back up again.  But other folks just freak out at the idea.

[Nvreloader]

Thanks Guys

I need to tear down and do the measurements, and every thing will be measured, except the Hpa gage,
and completely dried before use. 

Now, all I need is the formulas to convert all the info,
still searching this site, but very little useful info found so far.

Tia,
Don

[Rat Sniper (AKA: PaulT58)]

I finally received all the parts I needed to assemble a reg tester.  Well, all three parts...  It's pretty simple, but it works...  I was able to set up two 13ci bottle to 1250 psi and one 23ci bottle to 1275 for my Gauntlet.  All 3 regulators are made by Ninja, and every one of them took a different number/sizes of shims to achieve the same relative output pressure...  I got all the parts from AliExpress, total investment was less than $20.  The wait for the parts to arrive was the most trying part of the whole process!   

[Nvreloader]

Thanks Paul

Sharp looking Reg tester,
I am rethinking mine............attempting to make the gage work in 2 jobs, with reduced hosing.
I have a couple of regs to test and set also, having a hard finding the thin shims.

I really like your photo,
"Knock, Knock, Anyone home, I need to borrow a cup of Honey".   

Tia,
Don

[Rat Sniper (AKA: PaulT58)]

Thanks Paul

Sharp looking Reg tester,
I am rethinking mine............attempting to make the gage work in 2 jobs, with reduced hosing.
I have a couple of regs to test and set also, having a hard finding the thin shims.

I really like your photo,
"Knock, Knock, Anyone home, I need to borrow a cup of Honey".   

Tia,
Don

Thanks Don,  I really like the gauge, it wasn't expensive, but I find it very easy to read, which is exactly what I was hoping it would do.  I have one more regulator to set up.  It's a .5L tank that I'm going to set at 2000 psi output.  I have a remote fill setup arriving today and I'm going to try connecting it to the fill port on my Maximus to see if it will give me a better shot count.  The max fill on the Maximus is 2000 psi, so I'm hoping the larger tank will just act like an extension of the installed air tube.

I ended up ordering some shims from Zorro.com.  It was recommended by another member.  They offer some sample packs that have shims sized from .001 - .125 in varying thicknesses.  The are $4 and change per pack, with 19 shims per pack (I believe it's one shim per size).  I ordered 5 packs along with a couple packs of Bellville washers.  If you sign up for their newsletter, you get a 15% off code for your first order.  Shipping is a flat rate $5.00, so be sure you order everything you need on one order to maximize the savings!  They also participate in the Ebates Cash back, so if you are an Ebates member, there's some additional saving as well!  If you aren't already an Ebates member, you can join for free and get $10 back the first time you use Ebates to make a purchase.  You can check it out and sign up here if interested:

https://www.ebates.com/r/PTARNU?eeid=28187

[Nvreloader]

Thanks Paul

I have 3 pks in the cart along with the other washers of different sizes for testing. 

Tia,
Don