I honestly would not bother with that tune kit. The gun is better left stock. I have proved it time after time. The original tuner of this gun since its advent....Some people incl. the maker of that kit, asked my advice and then developed the kit, but it missed the vital aspect in order to keep his production costs down. This is that not all guns benefit from the fitting of plastic Top Hats.. The kit should have incl. a steel Top hat. You need the weight in the piston but do need to arrest the muzzle end of the spring...
The key with the HW45 making power, is getting the pellet out faster before the comical recoil starts. The shot cycle of the Delrin kit, feels more damped sure, but it is slower by 40 fps to 50 fps...Plastic Top hat, in my gun proved less accurate than with a 15 gram weight because its velocity is slower, even if it did feel a nicer cycle.
To make the most power, it needs the long guide down inside the piston like what Johnny Piston has his ..(look at the groups he is making with it) .However, it needs the other end of the mainspring supporting in some way... I am trying to come up with something simple for you guys (without Lathes) to be able to arrest the mainspring at the other end. (at the muzzle end) With the mainspring unsupported at that end, the mainspring life is shortened, it bends and it twangs. It needs some sort of support at the distal end. This is the the only benefit to that kit.
Leave me with it and i will come up with something for you. I am thinking in terms of a drop in slug, or dowel that is a reasonable slide fit into the mainspring, arresting the mainspring from flailing around and canting over at that end, possibly locating it in the end plug hole somehow. You might need to drill hole through this dowel to allow the fitting of the cross pin. Whatever it is, it will need to be easily sourced off the web, being the main problem....but leave it with me...
For those with lathes. You can can take 20mm off the length of the long guide, which allows the fitting of a solid steel Top Hat of 20mm length... Left solid, it will make 20 grams (power starts to fall after 25 grams) which I discovered is the optimum for making 600 fps with Hobby pellets. The existing guide can then be placed muzzle end...
The key with the HW45 making power, is getting the pellet out faster before the comical recoil starts. The shot cycle of the Delrin kit, feels more damped sure, but it is slower by 40 fps to 50 fps...Plastic Top hat, in my gun proved less accurate than with a 15 gram weight because its velocity is slower, even if it did feel a nicer cycle.
To make the most power, it needs the long guide down inside the piston like what Johnny Piston has his ..(look at the groups he is making with it) .However, it needs the other end of the mainspring supporting in some way... I am trying to come up with something simple for you guys (without Lathes) to be able to arrest the mainspring at the other end. (at the muzzle end) With the mainspring unsupported at that end, the mainspring life is shortened, it bends and it twangs. It needs some sort of support at the distal end. This is the the only benefit to that kit.
Leave me with it and i will come up with something for you. I am thinking in terms of a drop in slug, or dowel that is a reasonable slide fit into the mainspring, arresting the mainspring from flailing around and canting over at that end, possibly locating it in the end plug hole somehow. You might need to drill hole through this dowel to allow the fitting of the cross pin. Whatever it is, it will need to be easily sourced off the web, being the main problem....but leave it with me...
For those with lathes. You can can take 20mm off the length of the long guide, which allows the fitting of a solid steel Top Hat of 20mm length... Left solid, it will make 20 grams (power starts to fall after 25 grams) which I discovered is the optimum for making 600 fps with Hobby pellets. The existing guide can then be placed muzzle end...
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pellets after a good barrel cleaning. Was going for a 5 shot group as always but the crazy swirling wind (note pellet holes on box
) blew over my target box (after shot #4) which had a few pounds of large stones on the bottom!
