Author Topic: A new HUMA's in the house  (Read 1347 times)

mcoulter

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A new HUMA's in the house
« on: April 11, 2018, 05:43:12 AM »
I'll report back this weekend with how this works in my Royale .22   8)











I really like that they offered a reasonable rebuild kit for it as well  :-) 

Oh, it took just under two weeks to arrive from the Netherlands.
« Last Edit: April 11, 2018, 05:45:15 AM by mcoulter »


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bnowlin

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Re: A new HUMA's in the house
« Reply #1 on: April 11, 2018, 07:08:09 PM »
You could have gotten it from Trenier Outdoors in 3-4 days here in the states for same prices.
Bobn

mcoulter

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Re: A new HUMA's in the house
« Reply #2 on: April 12, 2018, 03:31:59 AM »
Hi Bob,

I actually had been in contact with them since about Christmas.  They did not have them in stock.  The ironic thing is that the day my reg was scheduled to be delivered,  I received an email from Brenda saying they had them in sock!  Oh well!
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Monkeydad1969

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Re: A new HUMA's in the house
« Reply #3 on: April 12, 2018, 10:09:34 AM »
What size plenum will you be using?

Joe
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Joe the P-Dawg Slayer!!!!!

mcoulter

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Re: A new HUMA's in the house
« Reply #4 on: April 12, 2018, 10:31:22 AM »
Hi Joe,

I am not aware of any adjustment for plenum size given the way the Royale regulator is nested inside the block.  I'm replacing the existing FX regulator and it's really just pushed in until it hits a stop-point.  The Huma instructions do a good job of illustrating how it goes in:

http://foto.huma-air.com/foto/Installation%20guide%20FX%20Boss.pdf

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Monkeydad1969

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Re: A new HUMA's in the house
« Reply #5 on: April 12, 2018, 03:16:34 PM »
Thanks for the info.

Joe
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Hajimoto

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Re: A new HUMA's in the house
« Reply #6 on: April 13, 2018, 06:19:57 AM »
I look forward to seeing/reading the results.
Thanks for the sharification
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Alan

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Re: A new HUMA's in the house
« Reply #7 on: April 13, 2018, 08:30:34 AM »
Sharification! Now there's a word you don't see very often. But Haji, I don't see the results?
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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.

mcoulter

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Re: A new HUMA's in the house
« Reply #8 on: April 15, 2018, 05:31:37 AM »
Let's just say that yesterday was a "learning" experience  :o   The lessons learned are...

1) The adjustment screw turns way easier than I ever would have expected.

2) The mark on the adjustment screw is not what the online instructions said it would be. 

3) Shot strings at 110 BAR are really, really long with a bottle gun   :P

So yeah, I meant to install the reg set to 140 bar.  I somehow missed this line and installed it at 110 bar instead.  The instructions said to look for a "very fine set mark".  I'm still not sure how I missed noticing this groove in the brass piece:




So when I screwed in the set screw it caused the adjuster to turn clockwise thus lowering the set pressure.  The adjustment on the original FX reg required wrenches to turn.  I wrongly assumed this would require similar force to turn...

With the 110 bar reg setting I got 156 shots

221 bar start to 100 bar end


Gun   FX Royale 400 Huma string #1, 3HS, 110B  Oops, set reg wrong - too low!            
Date   4/14/2018   
Caliber   0.22   
Weight (gr)   18.1
Max FPS   792   
Min FPS   719   
Avg FPS   773
SD   12.4
ES   73 (9.44%)   
Avg FPE   23.9


Omitting the last two mags (132 shots):
Max FPS   792   
Min FPS   757   
Avg FPS   777
SD   6.66
ES   35 (4.5%)   
Avg FPE   24.2


And the first 99 shots (max shots my crony can hold in one string)
H = 792
L = 762
A = 777
ES = 30
SD = 6


While I did not have the time to recreate the full shot string after realizing my reg pressure mistake, I did shoot a couple of mags to test it and play with hammer spring tension:


3 turns out on the hammer screw
899
907
907
905
909
903
905
909
909
903
908
902

Then 3.5 turns out
887
887
896
893
888
891
890
891
881
888
890
895

I have a collection of chrony strings here if anyone is interested:

http://bit.ly/2qyhFmu

Oh yeah here is the FX and smaller HUMA side-by-side:



« Last Edit: April 15, 2018, 05:35:28 AM by mcoulter »
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mcoulter

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Re: A new HUMA's in the house
« Reply #9 on: April 15, 2018, 05:54:24 AM »
Whoops!  I almost for got to "sharify" the target pix! 

50 (55?)  yards with JSB 18.1 pellets.  Groups are 12-shots with no adjustment for wind. 

110 BAR reg setting (about 772 fps / 24 FPE)

Target #1




Target #2



So what's interesting in target #2 is that the very last shots of the long 156 shot string are on the top left of the page.  Yes, I had to do more holdover, but as you can see by the "last" marking, they still held an OK group for low-ish velocity  (729, 719, 733)


And this is my target after correcting the reg pressure.  The group just below the big clip were my 1st shots.  The POA was the center bullseye, so you can see that POI is quite a bit higher:



I adjusted the elevation for the other groups.   I don't recall which groups where shot at the different hammer spring settings though...
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Alan

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Re: A new HUMA's in the house
« Reply #10 on: April 15, 2018, 05:57:13 AM »
Your trap looks as bad as mine does! I think the last time I emptied it, about a pound of lead fell out.
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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.

mcoulter

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Re: A new HUMA's in the house
« Reply #11 on: April 15, 2018, 06:02:49 AM »
Your trap looks as bad as mine does! I think the last time I emptied it, about a pound of lead fell out.

Ha!  Yeah, it ain't very pretty, is it?  I give the credit (blame?) of those chicken pox marks to my ill-fated Hatsan 135   :-X
« Last Edit: April 15, 2018, 07:34:33 AM by mcoulter »
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n2stuff

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Re: A new HUMA's in the house
« Reply #12 on: April 15, 2018, 06:58:45 PM »
The fine line on the reg was just that a very faint line scratched in the top of the brass. I see they have improved their design plus the screw in the top has vent holes where as the old one you had to back the screw out about a turn. Mine was for my Mrod but for the most part they are all the same.I hope Huma makes these upgrades to all their regs in the future.
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mcoulter

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Re: A new HUMA's in the house
« Reply #13 on: April 25, 2018, 09:46:00 AM »
I still feel like I'm chasing my tail.  I now have more pellets and a fresh fill on my tank.  It's time to take Bob's advise and see how it goes!

http://airgunguild.com/ask-bob/tuning-a-regulated-pcp/msg20336/#msg20336
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mcoulter

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Re: A new HUMA's in the house
« Reply #14 on: April 28, 2018, 08:05:57 AM »
I've posted my hammer spring testing in Bob's "Tuning a regulated PCP" thread here:

http://airgunguild.com/ask-bob/tuning-a-regulated-pcp/msg20486/?PHPSESSID=69defd9a5f9e9409e59fcc25aee49f56#msg20486

 ;D
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