The OFFICIAL Cricket Chrony thread
Hi Cricket folks! I’m starting a thread here so we can all share our chrony strings. I’m doing to this to see if my regulator is ‘acceptable’ as is or need to be tuned. This is for the sole purpose of seeing how consistance the regulator is and not how efficient. This mean I only care about the standard deviation and not shot count! What I’m looking for is at least a magazine of shots (14 for .22, 12 for .25). Also please tell us your starting pressure and if you know the ending pressure. You don’t have to shoot until you’re off the reg. If you know how to calculate the standard deviation and averages please include that. To keep it short, please list your string on a single line like this: 880, 882, 880, 878, 883, etc.
Who would like the honor to be the first to post their chrony string?
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If all else fails you can always send it to Ernest. 😛 It always a good idea to set the baseline as it came (full string with graph) and then make only one small change at a time and then evaluate the entire string with a graph before making any other changes.
If you read the earlier post you will see what the original setting “0” is. It is when I screw in the HSA from WWAG flush with the back. It’s not only flush it’s only points vertically so I’m sure I can back to that position if I lost track of how many turns. As to why the “0” differs, I’m assuming the reg is set too high and causing inconsistancy. I have decided to take the reg out and adjust it about 1/2 turn CW to see what happens. Unless someone talks me out of it. I kinda want to take it apart anyway…
If you read the earlier post you will see what the original setting “0” is. It is when I screw in the HSA from WWAG flush with the back. It’s not only flush it’s only points vertically so I’m sure I can back to that position if I lost track of how many turns. As to why the “0” differs, I’m assuming the reg is set too high and causing inconsistancy. I have decided to take the reg out and adjust it about 1/2 turn CW to see what happens. Unless someone talks me out of it. I kinda want to take it apart anyway…
So you marked the original setting somehow? When you say +1/4 and then +1/2 does that mean it is now +3/4 from original or only +1/2? plotting graphs make what’s is happening a lot easier to see. You can mark your colored gauge with Sharpie dots using the fill tanks gauge but the Crickets fill very slowly. Also, why are your first 0 velocities different than your second post (a little higher)?
“0”
895 892 895 893 893 894 891 892 894 889 892 896 891 886 893 893 891 893 887 890 892 889 891 892 889 884 889 881
Average 891
SD 3.45
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“+1/4”
E 914 918 924 905 902 899 893 890 887 888 879 896 883 878 878 881 890 882 881 887 884 887 882 879 879 884 874
Average 890
SD 13.2
what the hell happened here? SD increased tremendously only 1/4 turn…
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“+1/2”
924 918 919 924 926 920 916 914 913 918 898 897 893 889 890 885 889 892 886 883 880 888 881 878 886 882 882 879
Average 898
SD 16.8
I think I’m going in the wrong direction here…so let’s try loosening the spring….
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“-1/4”
904 901 900 905 902 903 906 905 904 900 907 907 905 907 906 901 904 906 901 905 901 905 910 909 919 911 910 908
Average 905
SD 4.0
Why did the velocity increased as I weaken the spring? (+14 fps). That made no sense.
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“-1/2”
898 881 883 883 882 880 882 885 882 881 879 882 880 878 877 881 880 912 914 916 921 917 914 913 915 904 899 896
Average 893
SD 15.6
Don’t like the way SD jumped up…Let’s retest “0”
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“0”
902 896 898 899 897 899 897 895 896 898 896 897 894 921 911 915 913 912 917 907 904 910 906 913 907 905 897 899
Average 903
SD 7.6
Comparing the “0” to the original “0” really puzzled me. Increased velocity 12 fps with the same hammer spring setting? SD not consistant
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I’m not expert but I’m think my regulator is TUNED TOO HIGH? Could someone chime in?
Good luck, waiting with bated breath.
Alright, got my Hammer spring adjuster from WWAG today. I’m hoping it’s going to help my goal of making my compact cricket more consistency and lower the dreaded standard deviation.
I’m going to do thisscientifically/systematicly chronying this thing. I start by installing the HSA FLUSH with the back. I call this my zero “0”. I’m going to be taking 28 measurements (2 mags) starting from 3500 psi each time. I will turn the HSA in increment of +/- 1/4 turn. (+ = clockwise, – = counter clockwise) and retake measurements.
Will report the results soon, wish me luck.
nobody wants that honor? Oh well, I’ll be the first then.
Starting Pressure: 3000psi
Ending Pressure: ~2000psi (not sure, I have a color pressure gauge)
E, 876, 883, E, 876, 880, 887, 877, 873, 874, 873, 876, 874, 875, 885, E, E, 890, 876, 878, 878, 885, 877, 875, 877, 876, 873, 876
28 shots
standard deviation: 4.75
average: 878
Still not satisfied. I need to get sd down to at least 2 (preferably 1)
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I wouldn’t go turning 1/2 turn… it don’t take much. id try it around 1/8 turn at a time.