Author Topic: which gauge to believe ?  (Read 1527 times)

761xl

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  • scotty 57
which gauge to believe ?
« on: April 04, 2020, 06:26:09 AM »
hi , i have a cheap hand pump and a chief , the hand pump shows 2k at same time gun shows 1.6k .  i stopped. should i  go on until gun reads 2k ?

thanks for any help . dont wanna screw anything up before i even shoot the gun


i've done a lot of stupid things in my life , but i'm probably not quite finished :)

Alan

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Re: which gauge to believe ?
« Reply #1 on: April 04, 2020, 10:07:57 AM »
Here's a fact.

Very few 19 mm to 22 mm gauges are even close. I have one which wouldn't even show until you applied 1,000 PSI to it. This is the reason I bought custom, class 4 gauges for my WAR Cobra.

I bought a class 4A, 2 inch gauge from Wika, with a 5,000 PSI and appropriate BAR scales. The necessary fittings cost a few dollars too, but the total was under $80. This gauge is rated at ±.1% over the whole range. I use it to check the other gauges that I have. Incidentally, the gauges on my FX Impact are as close to this gauge as I can read them. It was (and is) worth the expense.

  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

761xl

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Re: which gauge to believe ?
« Reply #2 on: April 04, 2020, 01:20:00 PM »
thank you sir, i couldnt stand it and shot one round through chronograph, got 820 with a 14.3. a man named rsterne [ hope i spelled correctly ] shows lots of velocities and guessing based on his charts i think im probably not over pumped but im going to need something like you showed , and a moderator [ supresser ?] , gun sounded like 22 short  , i decided to loosen hammer spring by 3 turns before i fired the shot.

scotty
i've done a lot of stupid things in my life , but i'm probably not quite finished :)

Alan

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Re: which gauge to believe ?
« Reply #3 on: April 04, 2020, 01:40:38 PM »
Bob Sterne is correct. If you post a question in this forum, you will get an answer.
  • Roswell, New Mexico
Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

steveoh

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Re: which gauge to believe ?
« Reply #4 on: April 04, 2020, 03:22:28 PM »
There's good reason to not trust a lot of gauges out there. Here's an example:

I bought a new Yong Heng compressor. It came with a 2" gauge.

I have a Air Venturi 4500 psi tank made by Ninja.

Filled up the Air Venture tank with the Yong Heng, and while watching the Yong Heng gauge, figuring that it was larger and maybe more accurate I blew out a burst disk and just about wet my pants. Replaced the burst disk and went to fill up and same thing. So I started comparing gauges, and found the Yong Heng was gauge was 500 psi off from the Air Venturi tank gauge. Aaaaaahah!

Alan had sent me a box of nice gauges, and I installed and I installed one of the 3" Winters gauges, and holy cow batman it's huge, and consistent, and I haven't popped a burst disk since.

I wish the manufacturers would step up and send out better quality gauges. I have a new 1.5" gauge ready to go on my Texan.
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