Tuning my .22 Cricket with the 2 piece speed adjuster
- I bought a new black and brass 2 piece speed adjuster.
My cricket (.22 Composite Stock) is still at factory settings, except for the speed adjuster.
I have several hundred pellets thru the barrel. JSB 18.1I have a couple of questions about tuning.
1. Which adjuster is best for HST tuning? Black portion or brass portion?
What is the difference between to two of them?
2. When shooting accross a chrony, how long do I need to wait between shots?
I believe the regulator has to have time to recover.
3. What ES is acceptable?
4. What shot to shot fps spread is acceptable?
5. Should I fill to 232 bar every time, or, should I use something different?
Thank you, TerrySS
All Replies
Hi Terry, first of all, what He ( :hoot: ) said!! I believe the inventor of the HST you described is a member of the forum, perhaps a Finn, or Dane or Swede, I get them confused which I blame Sir Ville for. The adjuster looks to be made very well, just a little more complicated than the one Ernest the Cricket Guru sells.
Regards
One of the Feckless Band of Rat Pricks
LarryW 😎
Dear Terry…
Either I’m the smartest forum member available to answer, or no one else gives a shit whether you live or die, much less get viable information.
Please don’t be offended by the lack of response to your post. I do suggest you begin your next post with “Dear Feckless Band of Rat Pricks…” as this will get the ingrates attention and perhaps even squeeze out what little information they possess…provided any of them are sober.
Kindest regards,
Uncle Hoot:
Terry, I believe the speed adjuster you mention is the HST, Hammer Spring Tensioner.
You screw the black part in all the way. All the black part does is provide a thread for the brass to move in and out when you turn the brass part. You then back out the brass knob, counter-clockwise, until it stops.
Then, you need a chronograph. There is no wait time between shots, as the chrony will display the feet per second instantaneously.
For the 18gr pellet, a suggested speed found to be most accurate is 880 fps. After each shot, screw the brass screw in, clockwise, and fire another shot. The feet per second will increase each time. When it gets to 880 feet per second, but no more than 900 feet per second, you will have reached the optimum speed for the .22 caliber 18gr pellet.
The 18gr pellet will go faster, foot pounds of energy will increase slightly, but accuracy will suffer. I suggest you maximize the potential of the .22 Cricket with the above suggestions.
More power is useless without accuracy.
The spread between shots in .22 caliber, in my Cricket, runs around 5 to 10 fps. It varies…but then I shoot the 21gr pellets, so your variation will likely vary slightly. Your shot string will stay fairly stable until your air pressure drops below the regulator setting.
I fill to 3000 psi, 200 BAR, and shoot down 1500 psi, then refill. Filling beyond 200 BAR will increase shot count slightly, but has proven inefficient as it uses more air per shot than when it gets down to 200 BAR. Besides, you will get plenty of shots at a 200 BAR fill. Several clips worth. I’m just guessing, but I believe I get around 45 to 50 regulated shots with a 200 BAR (3000 psi) fill, when shot down to 1500 psi.
EDIT: I forgot to mention the HST adjustment will only increase/decrease feet per second by perhaps 100 to 150 fps. To do serious adjustment, go to Youtube and watch Ernest Rowe series of Cricket Air Gun videos. However, I suggest you go no further than the brass knob and gain some experience before taking the gun apart. Read some of the old posts and gradually gain some expertise before you start to modify the gun.
Hoot:
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Larry, I suggest first of all that you change your forum name to “Rat Belch”, as LarryW22 does not have an appropriate ring to it. A decent forum name is always a plus because the rabble will stop to see what you have to say.
Terry, the same advice. An unusual avatar and a humorous name adds to the “color”, and amuses the morons who frequent this forum.
Just a thought! Larry, A nice picture of a rat for your avatar would be a nice touch. Just go to “User Control Panel” upper left in the shaded area and click on it. Have some fun with these dumb fucks!
Kindest regards,
Uncle Hoot: