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Author Topic: Building a better balanced valve  (Read 2159 times)

Dairyboy

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Re: Building a better balanced valve
« Reply #60 on: September 16, 2017, 02:13:27 PM »
Travis and I talked last night and I'm going to try open ports (.17-.18) and see what it can do with the Bstaley. After that going regulated 8)
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA

triggertreat

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Re: Building a better balanced valve
« Reply #61 on: November 09, 2017, 01:11:01 PM »
I have been testing the new balanced SS valve from A.R.T. (Travis) and am tickled pink with the shot counts and power  I'm getting and with the ease of cocking I'm getting them with.  The SS valve is very efficient too so the shot noise is way down as well.

This is a prototype valve I have been testing and not a production model.

Here is a collection of some strings I have been able to do with this new SS valve.  I started out with low reg. settings and have been working my way up.  Test #5 is the same tune as test #4 with fewer shots for a higher FPE average.







Test #2 was a flop





  • Nashville, TN
Romans 8:1-11

22 Synrod Unregulated. Tuned using JSB 18.13gr:
30 Shots @ 31.02 FPE Avg., 1.36% ES (12 FPS), 1.58 FPE/CI
Mods: ART TSS & MDS hammer, MMHF barrel, Stock 25 cal. Valve spring, (w/Stock .22 TP, Valve & Porting)

25 Synrod Regulated. Tuned using JSB MKIIs:
24 Shots @ 55.92 FPE Avg., 2.08% ES (18 FPS), 1.45 FPE/CI
Mods: ART SS valve, TSS & MDS hammer, Hill Gauge port, Huma reg., .220 Porting

oneshot61

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Re: Building a better balanced valve
« Reply #62 on: November 10, 2017, 05:19:55 AM »
Nice power and efficiency. Looks like it prefers a higher reg set point and the inner spring installed? I especially like your top 56 ft lb string for hunting.
 On another note, why is no one testing the kral valve? I haven't been able to get a response or answer.

triggertreat

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Re: Building a better balanced valve
« Reply #63 on: November 10, 2017, 07:44:09 AM »
Nice power and efficiency. Looks like it prefers a higher reg set point and the inner spring installed? I especially like your top 56 ft lb string for hunting.
 On another note, why is no one testing the kral valve? I haven't been able to get a response or answer.

Thanks! No, just one light spring being used.  the inner adjustment on the TSS is removed for all strings shown.  I ran the reg up in steps and tuned each string below what the max FPE would be for that reg setting for the efficiency while using a very light hammer and spring with little to no preload.  For example, with the 56 FPE tune, I can go all the way up to 59 FPE in my quick test for max with that setup, but am not sure for how many shots.

I popped a couple of pest squirrels in the head recently with the 56 FPE and WOW, the pop was loud when the lead hit.  My cocking is really easy now with this SS valve and with its efficiency and using a light hammer and spring the shots are really quiet, but not the smack down.

I still have a restricted airflow jet in the valve inlet.  Once I increase the jet opening, which is currently at 0.050, the FPE will climb on up.  I currently only have 34cc of plenum space and that is holding me back regulated.  This valve will scream unregulated with just stock like cocking which is the best part.

I have not seen Travis on the forums lately. Must be dealing with some stuff?
« Last Edit: November 10, 2017, 07:46:19 AM by triggertreat »
  • Nashville, TN
Romans 8:1-11

22 Synrod Unregulated. Tuned using JSB 18.13gr:
30 Shots @ 31.02 FPE Avg., 1.36% ES (12 FPS), 1.58 FPE/CI
Mods: ART TSS & MDS hammer, MMHF barrel, Stock 25 cal. Valve spring, (w/Stock .22 TP, Valve & Porting)

25 Synrod Regulated. Tuned using JSB MKIIs:
24 Shots @ 55.92 FPE Avg., 2.08% ES (18 FPS), 1.45 FPE/CI
Mods: ART SS valve, TSS & MDS hammer, Hill Gauge port, Huma reg., .220 Porting

Dairyboy

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Re: Building a better balanced valve
« Reply #64 on: November 10, 2017, 10:55:59 AM »
Whenever the weather and free time ever coincides with each other I plan on testing mine again. It's all set up regulated ready to go just either too busy or crap weather like right now raining the last few days

Also Daniel, Travis has been struggling alot lately with his back and I know was supposed to go in for tests before surgery. That's made things slow down a bit
« Last Edit: November 10, 2017, 11:06:14 AM by Dairyboy »
  • Outlook, WA
John 3:16

.20 Mrod
.22/.30 WARP COBRA

oneshot61

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Re: Building a better balanced valve
« Reply #65 on: November 10, 2017, 11:46:06 AM »
Man... when your back hurts .. everything hurts. You can't move hardly any direction without pain. He definitely has my sympathies. No worries just curious.. all in good time. These valves are so tuneable... for just about any purpose. Thanks for posting, it's nice to see all the possibilities.

bnowlin

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Re: Building a better balanced valve
« Reply #66 on: November 14, 2017, 03:57:31 PM »
Not sure what I am doing but here are my latest strings with regulator @ 1850 and fill at 3200
Created: 11/14/17 11:43 AM
Description: JSB 25.4 at 1850 reg
Notes 1: load 3200
Notes 2:
Distance to Chrono(FT): 3.00
Ballistic Coefficient: 1.000
Bullet Weight(gr): 25.40
Temp: 76 °F
BP: 30.19 inHg
Altitude: 0.00
#          FPS  FT-LBS      PF
38    885      44.18    22.48 
37    892      44.88    22.66   
36    896      45.29    22.76 
35    902      45.89    22.91 
34    900      45.69    22.86   
33    894      45.08    22.71 
32    897      45.39    22.78 
31    892      44.88    22.66 
30    900      45.69    22.86   
29    894      45.08    22.71 
28    893      44.98    22.68   
27    900      45.69    22.86   
26    899      45.59    22.83   
25    893      44.98    22.68   
24    887      44.38    22.53   
23    882      43.88    22.40   
22    894      45.08    22.71 
21    897      45.39    22.78 
20    896      45.29    22.76 
19    890      44.68    22.61 
18    895      45.19    22.73 
17    890      44.68    22.61 
16    887      44.38    22.53 
15    885      44.18    22.48 
14    896      45.29    22.76 
13    890      44.68    22.61 
12    891      44.78    22.63 
11    887      44.38    22.53 
10    890      44.68    22.61 
9    889      44.58    22.58 
8    894      45.08    22.71 
7    882      43.88    22.40 
6    888      44.48    22.56 
5    893      44.98    22.68 
4    893      44.98    22.68 
3    891      44.78    22.63 
2    891      44.78    22.63 
1    895      45.19    22.73 
Average: 892.4 FPS
SD: 4.9 FPS
Min: 882 FPS
Max: 902 FPS
Spread: 20 FPS
Shot/sec: 0.1
True MV: 893 FPS
Group Size (in): 0.00

Created: 11/14/17 12:01 PM
Description: JSB 33.95 at 1850 Reg
Notes 1: load 3200
Notes 2:
Distance to Chrono(FT): 3.00
Ballistic Coefficient: 1.000
Bullet Weight(gr): 33.95
Temp: 75 °F
BP: 30.17 inHg
Altitude: 0.00
#          FPS  FT-LBS      PF
38    787      46.70    26.72 
37    788      46.82    26.75 
36    801      48.37    27.19 
35    798      48.01    27.09 
34    798      48.01    27.09 
33    795      47.65    26.99 
32    806      48.98    27.36 
31    798      48.01    27.09 
30    793      47.41    26.92 
29    789      46.94    26.79 
28    786      46.58    26.68   
27    801      48.37    27.19 
26    797      47.89    27.06 
25    797      47.89    27.06 
24    793      47.41    26.92 
23    791      47.17    26.85 
22    785      46.46    26.65   
21    804      48.74    27.30 
20    794      47.53    26.96 
19    787      46.70    26.72 
18    789      46.94    26.79 
17    788      46.82    26.75 
16    785      46.46    26.65 
15    786      46.58    26.68 
14    787      46.70    26.72 
13    785      46.46    26.65 
12    793      47.41    26.92 
11    795      47.65    26.99 
10    794      47.53    26.96 
9    792      47.29    26.89 
8    785      46.46    26.65 
7    790      47.06    26.82 
6    786      46.58    26.68 
5    786      46.58    26.68 
4    795      47.65    26.99 
3    791      47.17    26.85 
2    792      47.29    26.89 
1    787      46.70    26.72 
Average: 791.9 FPS
SD: 5.7 FPS
Min: 785 FPS
Max: 806 FPS
Spread: 21 FPS
Shot/sec: 0.1
True MV: 792 FPS
Group Size (in): 0.00

Created: 11/14/17 12:28 PM
Description: JSB 33.95 at 1850 Reg
Notes 1: load 3200
Notes 2: 1/2 turn  in
Distance to Chrono(FT): 3.00
Ballistic Coefficient: 1.000
Bullet Weight(gr): 33.95
Temp: 74 °F
BP: 30.16 inHg
Altitude: 0.00
#          FPS  FT-LBS      PF
33    804      48.74    27.30 
32    808      49.22    27.43 
31    809      49.35    27.47 
30    818      50.45    27.77 
29    817      50.33    27.74 
28    816      50.20    27.70 
27    822      50.94    27.91 
26    825      51.32    28.01 
25    817      50.33    27.74 
24    805      48.86    27.33 
23    808      49.22    27.43 
22    821      50.82    27.87 
21    813      49.84    27.60 
20    815      50.08    27.67 
19    817      50.33    27.74 
18    821      50.82    27.87 
17    820      50.70    27.84 
16    812      49.71    27.57 
15    810      49.47    27.50 
14    812      49.71    27.57 
13    815      50.08    27.67 
12    816      50.20    27.70 
11    814      49.96    27.64 
10    816      50.20    27.70 
9    818      50.45    27.77 
8    821      50.82    27.87 
7    809      49.35    27.47 
6    815      50.08    27.67 
5    824      51.19    27.97 
4    813      49.84    27.60 
3    816      50.20    27.70 
2    820      50.70    27.84 
1    805      48.86    27.33 
Average: 814.9 FPS
SD: 5.5 FPS
Min: 804 FPS
Max: 825 FPS
Spread: 21 FPS
Shot/sec: 0.1
True MV: 815 FPS
Group Size (in): 0.00


Created: 11/14/17 12:43 PM
Description: JSB 25.4 at 1850 Reg
Notes 1: load 3200
Notes 2: 1/2 turn  in
Distance to Chrono(FT): 3.00
Ballistic Coefficient: 1.000
Bullet Weight(gr): 25.40
Temp: 75 °F
BP: 30.14 inHg
Altitude: 0.00
#          FPS  FT-LBS      PF
25    901      45.79    22.89 
24    908      46.51    23.06 
23    907      46.40    23.04   
22    907      46.40    23.04   
21    910      46.71    23.11 
20    913      47.02    23.19 
19    912      46.92    23.16 
18    912      46.92    23.16 
17    910      46.71    23.11 
16    915      47.23    23.24 
15    912      46.92    23.16 
14    911      46.82    23.14 
13    911      46.82    23.14 
12    913      47.02    23.19 
11    913      47.02    23.19 
10    910      46.71    23.11 
9    910      46.71    23.11 
8    913      47.02    23.19 
7    919      47.64    23.34 
6    913      47.02    23.19 
5    911      46.82    23.14 
4    914      47.12    23.22 
3    914      47.12    23.22 
2    909      46.61    23.09 
1    910      46.71    23.11 
Average: 911.1 FPS
SD: 3.4 FPS
Min: 901 FPS
Max: 919 FPS
Spread: 18 FPS
Shot/sec: 0.1
True MV: 911 FPS
Group Size (in): 0.00

triggertreat

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Re: Building a better balanced valve
« Reply #67 on: November 15, 2017, 09:13:55 PM »
You've got some good looking strings there Bob!  Not sure of the ending pressures for efficiency, but the power is there.  I am really enjoying my SS valve, especially at 56 FPE and with easy cocking.

  • Nashville, TN
Romans 8:1-11

22 Synrod Unregulated. Tuned using JSB 18.13gr:
30 Shots @ 31.02 FPE Avg., 1.36% ES (12 FPS), 1.58 FPE/CI
Mods: ART TSS & MDS hammer, MMHF barrel, Stock 25 cal. Valve spring, (w/Stock .22 TP, Valve & Porting)

25 Synrod Regulated. Tuned using JSB MKIIs:
24 Shots @ 55.92 FPE Avg., 2.08% ES (18 FPS), 1.45 FPE/CI
Mods: ART SS valve, TSS & MDS hammer, Hill Gauge port, Huma reg., .220 Porting

oldpro

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Re: Building a better balanced valve
« Reply #68 on: Today at 09:49:12 AM »
Looks awesome Bob.
  • Mount Shasta Ca.