33 FPE Airwolf 177 - 65 yard groups

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Sam63

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Feb 11, 2016
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 I have been tinkering/tuning and installing upgrades on my 177 Airwolf for about 2 years. This weekend was the first time shooting it in its current configuration. The board was purchased from Jan Jak(jhnntfts) on ebay. AZ installed the barrel and custom shroud. I am going to write a review about the build when I get some time.



At 33 fpe its very quiet the loudest sound is the valve closing and the pellet making contact with a target. In the video its shooting JSB 16.2 at 940 - 945 fps. Pellets straight from the tin.

 
 
Its a 23" LW barrel and AZ cut it 21 inches, he kept it long for power and efficiency. In the 1st part of the video check the metal spinners moving from wind. At 65 yards the wind really didnt move the Beasts or effect accuracy like it would have with the 22 cal JSB 16 grain pellet. Google a photo of the JSB Beast its shaped more like a bullet/torpedo than a typical pellet. 
 
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Please can you tell us about the process you went through to add power settings for the new board?

My understanding is that the MCT models use readings from the air pressure sensor to set the force of the valve strike but that it is not real time. I.e. There is no intelligence to it, it just uses preset values. E.g. At 3000 psi the solenoid will strike with X force and at 1800 psi it will strike the valve with Y force etc. So the factory MCT board only has two available preprogrammed power settings. 

If I understand correctly, the eBay replacement board allows the user to set 12 or 16 values themselves so, in theory, you could set it up to shoot your chosen pellet at your preferred power level and potentially eliminate the power curve. If done right, it could be made to behave like a regulated gun for a specific pellet at a specific power level, with the only downside being that you lose the water resistance so it will break in the rain.

Did I understand it correctly and did you manage to achieve a totally flat power curve?

 
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The pellets I have test so far are JSB's 7.33, 7.87, 8.4, 10.3, 13.4 and 16.2. H&N 8.64 and 10.65. The 16.2 shot best. The 13.4's were very accurate at 19 - 22 fpe but not like the 16.2. The other pellets shot ok but I did not have time to test at them at different speeds. The best were 16.2 then 13.4. The barrel is not pellet picky and shot almost every pellet decent except the 7.33 and 7.87. I do have a tin 16.1 Edjuns and will try them next time out. 

The board came pre-set, I contacted Jan to see how much power his board produced. Jan said 24 - 25 fpe. At the time JSB did not make 16.2. I am not sure if Jan customized my board but I was getting 27 fpe after a 215 bar fill(with H&N 15 grain). The board has 12 power settings. Mine came shooting about 7 fpe on low through 27 on high. About 2.5 fpe increments. Power 10 , 11 and 12 increments were about 1 fpe maybe less.

Each power settings can be adjusted down or up but I would not recommend playing with the board. Instructions were emailed PDF

Its a works like a harper valve, after each shot it drops in fps. I have not experimented much but did a 12 - 14 shot string after 215 bar fill. From memory, 1st shot was 945 fps, 938, 933, 927, 920, 910, 904, 895. It was about 38 degrees, the colder outside the less power the gun produces. AZ did a shot string at 75 - 80 degrees. 970 fps and fps dropped slower.
 
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"Sam63"The pellets I have test so far are JSB's 7.33, 7.87, 8.4, 10.3, 13.4 and 16.2. H&N 8.64 and 10.65. The 16.2 shot best. The 13.4's were very accurate at 19 - 22 fpe but not like the 16.2. The other pellets shot ok but I did not have time to test at them at different speeds. The best were 16.2 then 13.4. The barrel is not pellet picky and shot almost every pellet decent except the 7.33 and 7.87. I do have a tin 16.1 Edjuns and will try them next time out. 

The board came pre-set, I contacted Jan to see how much power his board produced. Jan said 24 - 25 fpe. At the time JSB did not make 16.2. I am not sure if Jan customized my board but I was getting 27 fpe after a 215 bar fill(with H&N 15 grain). The board has 12 power settings. Mine came shooting about 7 fpe on low through 27 on high. About 2.5 fpe increments. Power 10 , 11 and 12 increments were about 1 fpe maybe less.

Each power settings can be adjusted down or up but I would not recommend playing with the board. Instructions were emailed PDF

Its a works like a harper valve, after each shot it drops in fps. I have not experimented much but did a 12 - 14 shot string after 215 bar fill. From memory, 1st shot was 945 fps, 938, 933, 927, 920, 910, 904, 895. It was about 38 degrees, the colder outside the less power the gun produces. AZ did a shot string at 75 - 80 degrees. 970 fps and fps dropped slower.
Click to expand...
Oh...that's different to what I thought.

I thought the point of these boards was user adjustable power which could be set to vary based on the pressure left in the tank. E.g. so you could increase the power at 3000 psi, lower it from 2700 psi down to 1500 and then increase it from 1500 psi down to 1000 psi so you could eliminate the power curve and make it like a regulated gun.

If you just get more preset power settings without any improvement in consistency, I would probably stick with the original board to keep it waterproof. 

I feel oddly disappointed for some reason. I don't even have an Air Wolf so I have no reason to care. I just expected the technology to do more for some reason....
 
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"zebra"
I thought the point of these boards was user adjustable power which could be set to vary based on the pressure left in the tank. E.g. so you could increase the power at 3000 psi, lower it from 2700 psi down to 1500 and then increase it from 1500 psi down to 1000 psi so you could eliminate the power curve and make it like a regulated gun.
Click to expand...

If you just get more preset power settings without any improvement in consistency, I would probably stick with the original board to keep it waterproof. 

I feel oddly disappointed for some reason. I don't even have an Air Wolf so I have no reason to care. I just expected the technology to do more for some reason....
Click to expand...
There are hundreds of these boards in Daystates and havent heard of one breaking due to water. The original board is able to sit under water come out and shoot. No one is taking a $2000+ gun and putting it under water.

Your disappointed speaks volumes. Hang in there till it passes.

 
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Here is an excerpt from the manual. The power is user adjustable if you do not want to use the pre-programed ones, but a bit tedious as you need to plot out a flat curve from the usable pressure range of the rifle for your particular pellet:

Before discussing the settings in this menu, we will cover some theory on how the board works. This will help you understand what the settings do and how to use them to customize each of the 12 power levels to your specific gun, pellet and power preference.

As you probably know, the MCT system works by reading the pressure in the air reservoir and then sending a pulse of current through a solenoid for a predetermined amount of time. That amount of time is the “pulse width”. The pulse width will affect how hard the hammer strikes the air reservoir valve. By “mapping” the reservoir pressure to a pulse width, it is possible to strike the reservoir valve with just the right amount of force to maintain a constant pellet velocity.

The relationship between the pressure and the pulse width is not linear and can vary depending on the desired power, the pellet weight, caliber, etc. This board uses 20 pairs of pressure and pulse width (for each power level) to define the relationship. The pressure for the 20 pairs of data range from 54 to 240 bar in even increments. The pulse width for each pair is user adjustable. The ability to perform this adjustment is what enables this board to tailor each power level to the needs of the user giving an enormous amount of flexibility not present in the factory board.

 
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Ernest if the weather holds up I will shoot a video doing a shot string. I am almost positive the 16.2 beasts buck the wind better that the typical 16 grain domed 22 cal pellet. At 945 fps the beasts were stable and I am pretty sure carried more energy downrange. Maybe due to the torpedo shape. Watch in the 1st part of the video and look at the spinners being moved by wind(those are 22 PB spinners). I had no wind flag and adjusted little for wind. 

Also at 65 yards the pellet did not seem to drop like a typical 22 cal 18.1 or 16 grain domed pellet. Need to do more testing to confirm this.
 
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"fe7565"Here is an excerpt from the manual. The power is user adjustable if you do not want to use the pre-programed ones, but a bit tedious as you need to plot out a flat curve from the usable pressure range of the rifle for your particular pellet:

Before discussing the settings in this menu, we will cover some theory on how the board works. This will help you understand what the settings do and how to use them to customize each of the 12 power levels to your specific gun, pellet and power preference.

As you probably know, the MCT system works by reading the pressure in the air reservoir and then sending a pulse of current through a solenoid for a predetermined amount of time. That amount of time is the “pulse width”. The pulse width will affect how hard the hammer strikes the air reservoir valve. By “mapping” the reservoir pressure to a pulse width, it is possible to strike the reservoir valve with just the right amount of force to maintain a constant pellet velocity.

The relationship between the pressure and the pulse width is not linear and can vary depending on the desired power, the pellet weight, caliber, etc. This board uses 20 pairs of pressure and pulse width (for each power level) to define the relationship. The pressure for the 20 pairs of data range from 54 to 240 bar in even increments. The pulse width for each pair is user adjustable. The ability to perform this adjustment is what enables this board to tailor each power level to the needs of the user giving an enormous amount of flexibility not present in the factory board.

Click to expand...
So it is what I originally thought. The user can adjust the pulses to the solenoid for various pressure points to eliminate or reduce the power curve. That's good.

As it's user adjustable you could pair it with a regulator and create the most efficient and consistent air rifle on the planet. Without the ability to change the force of the hammer strike when the pressure drops, even the best regulators can only do so much. I would love to see what someone could do with the ability to tune it for each pressure level. I bet you could get and extreme spread of less than 5fps over an entire string. 
 
Upvote 0
"Sam63"The pellets I have test so far are JSB's 7.33, 7.87, 8.4, 10.3, 13.4 and 16.2. H&N 8.64 and 10.65. The 16.2 shot best. The 13.4's were very accurate at 19 - 22 fpe but not like the 16.2. The other pellets shot ok but I did not have time to test at them at different speeds. The best were 16.2 then 13.4. The barrel is not pellet picky and shot almost every pellet decent except the 7.33 and 7.87. I do have a tin 16.1 Edjuns and will try them next time out. 

The board came pre-set, I contacted Jan to see how much power his board produced. Jan said 24 - 25 fpe. At the time JSB did not make 16.2. I am not sure if Jan customized my board but I was getting 27 fpe after a 215 bar fill(with H&N 15 grain). The board has 12 power settings. Mine came shooting about 7 fpe on low through 27 on high. About 2.5 fpe increments. Power 10 , 11 and 12 increments were about 1 fpe maybe less.

Each power settings can be adjusted down or up but I would not recommend playing with the board. Instructions were emailed PDF

Its a works like a harper valve, after each shot it drops in fps. I have not experimented much but did a 12 - 14 shot string after 215 bar fill. From memory, 1st shot was 945 fps, 938, 933, 927, 920, 910, 904, 895. It was about 38 degrees, the colder outside the less power the gun produces. AZ did a shot string at 75 - 80 degrees. 970 fps and fps dropped slower.
Click to expand...
Hi,

I have 2 of hose board, they all come with preset values, the fisrt firmware was not as adjustable as the 2nd, with the latter you can fine tune it and eliminate the power curve,

This is the speed I have dedicated more time to(18fpe) because is the one I use for metallic silhouette, my favorite game,

jsb monster 232-76 bar

1. 766.81
2. 768.13
3. 768.71
4. 772.19
5. 769.84
6. 772.05
7. 770.57
8. 772.05
9. 772.64
10. 773.38
11. 771.5
12. 769.25
13. 763.67
14. 765.21
15. 766.04
16. 759.36
17. 764.25
18. 766.76
19. 769.44
20. 764.25
21. 763.67
22. 765.55
23. 766.91
24. 767.1
25. 766.67
26. 767.06
27. 772.74
28. 769.2
29. 768.71
30. 768.81
31. 770.42
32. 769.93
33. 770.23
34. 773.97
35. 771.31
36. 766.57
37. 766.33
38. 769.49
39. 765.7
40. 761.27
41. 769.1
42. 765.84
43. 772.93
44. 770.91
45. 767.1
46. 767.93
47. 768.37
48. 768.47
49. 766.18
50. 772.05
51. 771.36
52. 767.98
53. 768.22
54. 771.95
55. 773.97
56. 770.47
57. 771.55
58. 771.65
59. 772.88
60. 772.34
61. 768.61
62. 766.28
63. 767.1
64. 769.05
65. 772.14
66. 768.61
67. 769.64
68. 768.03
69. 766.52
70. 770.62
71. 772.05
72. 769.49
73. 768.57
74. 775.61
75. 770.18
76. 765.99
77. 762.95
78. 771.01
79. 768.08
80. 767.54
81. 765.21
82. 766.67
83. 769.69
84. 768.61
85. 763.38
86. 764.83
87. 765.36
88. 774.27
89. 763.86
90. 770.77
91. 763.76
92. 765.79
93. 769.3
94. 770.47
95. 768.91
96. 771.6
97. 768.22
98. 768.22
99. 768.18
100. 773.08
101. 771.6
102. 772.24
103. 770.57
104. 775.06
105. 772.88
106. 773.72
107. 773.82
108. 772.19
109. 769.79
110. 773.03
111. 765.41
112. 767.4
113. 768.32
114. 773.28
115. 772.44
116. 767.74
117. 762.08
118. 763.14
119. 762.51
120. 761.55
121. 754.06
122. 746.43
123. 746.8
 
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You are welcome Sam,

It was level 6 but I had to program it almost completely because it only gave a few shots at 18fpe, I think it was because Jack´s gun is an airwolf like yours, mine´s an mk4 

I used JSB monster 13.43gr
Fill pressure 230-120 bar

This is the string with the original preset values
  1. 795.33
  2. 787.98
  3. 789.47
  4. 787.98
  5. 785.68
  6. 783.29
  7. 784.05
  8. 786.59
  9. 785.12
  10. 784.71
  11. 785.01
  12. 785.78
  13. 788.23
  14. 786.49
  15. 785.37
  16. 782.73
  17. 782.37
  18. 782.43
  19. 784.15
  20. 784.45
  21. 782.58
  22. 779.8
  23. 782.73
  24. 775.06
  25. 773.38
  26. 774.22
  27. 775.46
  28. 768.42
  29. 774.32
  30. 764.83
  31. 768.42
  32. 763.33
  33. 756.32
  34. 757.65
  35. 759.45
  36. 757.88
  37. 753.96
  38. 752.46
  39. 760.55
  40. 759.93
  41. 759.59
  42. 759.79
  43. 761.17
  44. 754.95
  45. 755.75
  46. 760.31
  47. 760.6
  48. 763.23
  49. 760.55
  50. 756.37
  51. 755.09
  52. 763.52
  53. 758.74
  54. 761.46
  55. 760.88
  56. 759.59
  57. 759.07
  58. 759.74
  59. 762.42
  60. 759.26
  61. 758.64
  62. 760.84
  63. 762.08
  64. 753.96
  65. 756.04
  66. 755.28
  67. 754.67
  68. 754.58
  69. 753.59
  70. 746.11
  71. 746.8
  72. 747.17
  73. 743.91
  74. 741.13
  75. 741.59
  76. 743.77
  77. 741.49
  78. 737.52
  79. 738.87
  80. 732.7
  81. 732.08
  82. 730.09
  83. 726.06
    [/LIST=1]
 
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