Cricket .22 compact tuned at 21fpe 130 shots
Its a 1st for me to tune a compact at this speed, so here’s how it look when set at 21fps shooting 18.1g. over all length 24.75″.when off the reg it kept the current speed till it drop off the bell curb. at lower fpe the cricket in any caliber don’t shoot a tight string/ES. seem like a hour to shoot 130 shots 15 to 20 seconds between shots. And yes still vary accurate, vary quiet and fun!
Reg set at 105b
Hammer spring has been change to a weaker one
valve stem spring 1/4 turn
Barrel ID polish to 50,000
Metal HST adjuster
Fill pressure 230B
end pressure 85B
# shots 130
high 738
Low 725
ES 15fps
Ernest
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I was thinking , which is unusual in our family , and thought about making an ultimate ,IMO, “straight trajectory” airgun this way : I´ll buy a STD Cricket – or EG – in .22 cal. and then order a .20 cal barrel for it from LW. I had this superb springer in that marvellous caliber (Weihrauch HW 97 Black Line Stainless TH .20) and it was so ridiculously well shooting i still don´t understand why i sold it ..
Regardless – i think i could take i.ex a Cricket, turn the reg down to around 115 Bar or so and ,of course, tune the VS and everything else to work in harmony. I believe it would give a very good shot count and with some JSB Exact .20´s a very good trajectory at around 930 ,or so , fps while still having much more FPE than a .177.
Or am i missing something ??
I know the .20 cal isn´t overly popular in US – not the most popular cal here either – but it sure serves a purpose and several high-end/upper middle-class brands (Steyr, Wihrauch etc.) make PCP´s in that caliber. It´s the best of both worlds : Straight trajectory from a .177 while being less sensitive to winds and packing a higher punch.
I’d rather just have a .177 cricket tuned to maximize shots. Wouldn’t have to deal with loopy trajectory.
After tuning 50+ crickets and matador got easy balancing the reg, HST, valve stem spring.
when shooting at lower speed you don’t need that much reg pressure and you can shoot it down lower.
Ernest
That’s interesting,
I notice your Reg set @ 105 B and end pressure @ 85 B.
May Cricket is still breaking in about only 600 shot through it so for. It uses a lot of air once it reaches below the Reg Setting (factory set at about 120B) and starts to become less efficient using more air about 2 bars / shot compared to about 1.4 bars / shot before reaching the Reg setting. So I stop shooting before it starts to fall off.
I haven’t open up the air cylinder yet to check the factory settings of the value stem spring adjustment. That must have taken some work to figure out the balancing of all three springs !
Pretty Sweet there Ernst! 😉 😀
Knife
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I was thinking , which is unusual in our family , and thought about making an ultimate ,IMO, “straight trajectory” airgun this way : I´ll buy a STD Cricket – or EG – in .22 cal. and then order a .20 cal barrel for it from LW. I had this superb springer in that marvellous caliber (Weihrauch HW 97 Black Line Stainless TH .20) and it was so ridiculously well shooting i still don´t understand why i sold it ..
Regardless – i think i could take i.ex a Cricket, turn the reg down to around 115 Bar or so and ,of course, tune the VS and everything else to work in harmony. I believe it would give a very good shot count and with some JSB Exact .20´s a very good trajectory at around 930 ,or so , fps while still having much more FPE than a .177.
Or am i missing something ??
I know the .20 cal isn´t overly popular in US – not the most popular cal here either – but it sure serves a purpose and several high-end/upper middle-class brands (Steyr, Wihrauch etc.) make PCP´s in that caliber. It´s the best of both worlds : Straight trajectory from a .177 while being less sensitive to winds and packing a higher punch.
Not to get off topic with OP, I guess I’d have to look a a Chairgun trajectory plot and see a shot string with the .20 cal Cricket set to 930fps. Since I don’t have any experience with .20 cal I not sure what the general wisdom is for optimal FPS. I know that my .177 at 890fps have a .5 in kill zone for 10-50 yards. Doesn’t take much guessing on anything in between those yardages.
I’m in a urban setting where I am concerned about ricochets and fence pass-thru so the .177 is what I like for that reason. So it’s a bit more than just shot count for me.