50 cal
Nearly finished a silencer for a 50cal Career Dragon Slayer.
Still a bit to do but should be finished by tommorow evening.
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Chile runs along the south west coast of Southern America… might take a while.
Its still in the post sir.
Not sure how long it will take to get to Chile. (Not even sure where Chile is ).
I measured the volume of the silencer at just over 300cc.
Any guesses on how much cc air is expelled per shot ?
Any update on the performance of this silencer on that .50 cal?
Curious 🙂
Walter….
I asked for the barrel in the first instance but the logistics of it made it unfeesable.
The gun is in chilly so had to go the grub screw route.
I’ll ask him if he wouldn’t mind putting “dimples” in the barrel with a drill point after he has a mark from the first tighten.
The grubs are the high tensile type so at least they wont shear.
Sean
i wouldn,t worry about it mate i,ve not seen nor heard off any one haveing any trouble,s with the gear u send them
I have to point out that the grub screws weren’t my first choice iether.
I asked for the barrel in the first instance but the logistics of it made it unfeesable.
The gun is in chile so had to go the grub screw route.
I’ll ask him if he wouldn’t mind putting “dimples” in the barrel with a drill point after he has a mark from the first tighten.
The grubs are the high tensile type so at least they wont shear.
Sean
My Thought is that it’ll probably not stay on, but at least if it doesn’t you’ll will be firing a really high caliber Round(object) at least 😆
My experience with a .308 stealth at 200ftlbs. With an M6 grub screw secured in a recess is that it sheers of the grub screw after 50 rounds or something.
I’ll keep my fingers crossed for you Sean! Looks sharp by the way. Am curious about it’s performance!
Regards,
Marc
Well, its traveling at a slower speed but isnt there a ton more of it?
Al take what’s been said on board Walter and probly go to 6mm grubs. Just to err on the side of caution. ( Not cos am wrong 😆 )
My thaughts on the air velocity are that the pellet/bullet head are traveling at relativley low speeds. Less than 700fps i think ( but chime in if i’m wrong ). So the pressure will be less than in say a modded .22 ?
Any hoo. we’ll soon see when the fella gives us a report.
Right. I’m off to bed.
Good night.
ps: Bart. You’re my new brains from now on.
Well, it would be more like 3 pound, 2 pound, 1 pound. The wave decreases in strength as it goes through the shroud. The numbers I picked out of my butt, they have no basis in reality.
As far as “flowing fluids” are concerned, a design like Sean’s will break down the flow in stages and help to dissipate the total force. Whether it’ll do enough to prevent the silencer blowing off will remain to be seen.
One element would take the full force, five elements take the full force.
Force/one or Force/five…… no difference force is still the same.
remains to be seen.
Was only pointing out my thoughts on the design.
The first element takes some of the force while some passes to the second element which takes some of the force while some passes to the third element and so on. So instead of the total force acting instantaneously it is spread. Five 1-pound blows instead of one 5-pound blow. One 5-pound blow might be sufficient to break the grip of a grub-screw but where one 1-pound blow is insufficient to break it, five 1-pound blows would also be insufficient.
A crude analysis, but maybe valid. 😕
I’ll try to bring some insight.
In moving fluid dynamics, the total fluid pressure can be devided in three components.
These are the static pressure, of which all of us are aware of, the kinetic pressure, and the pressure due to a difference in height.
With our guns, and air as a fluid, the effect of the difference in height is negligable.
That leaves the static pressure and the kinetic pressure.
In Sean’s design, the static pressure has little to no effect on the rigidity of the silencer, so static pressure isn’t that big of a worry either.
However, the kinetic pressure *edit*which has a direction, straight forward in our case*/edit* (kind of like blowing against a sheet of paper, only at 2-300 m/s instead of maybe 1 m/s) is an issue to be taken into consideration.
The amount of force exerted due to the kinetic pressure will depend on the speed of the moving air (roughly identical to the speed of the pellet) and the volumetric mass of air hitting the baffles.
So much for fluidodynamics in a nutshell 🙂
And indeed, untill someone can actually calculate the volumetric mass of air expended during a shot, determining wether the silencer will stay on or not will continue to be a matter of simply trying it out (preferably a couple thousands of times, to have some margin of certainty).
I hope I made some sense. 😯
I cant comment on the grub screws (Especially since I was able to launch a .308 barrel that was “secured”…)
If you look at the threaded area of the device the hole in the inner part appears to be the same size as the hole in the outer cover – I don’t see any issues with that and your right, pressure acts in all directions…. but my best explanation to that would be to look at a career or an AA fill probe.
Good you pointed that out. I erred in presuming the threads were used on both ends. So you correctly point out the elements will more-or-less contian the pressure pulse. The grubs remain then as the only issue for me.
Walter….
As far as “flowing fluids” are concerned, a design like Sean’s will break down the flow in stages and help to dissipate the total force. Whether it’ll do enough to prevent the silencer blowing off will remain to be seen.
One element would take the full force, five elements take the full force.
Force/one or Force/five…… no difference force is still the same.
remains to be seen.
Was only pointing out my thoughts on the design.
Pablo’s baffled silencer (washers, vented inner-sleeve and sound-absorbing material) got shot off his rifle twice, dragging the grub-screw with it and gouging the barrel. A lowly .22 with standard TH&S.
As far as “flowing fluids” are concerned, a design like Sean’s will break down the flow in stages and help to dissipate the total force. Whether it’ll do enough to prevent the silencer blowing off will remain to be seen.
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Sounds nice.
Wish i’d gone with it.