Search found 26011 matches

by jackssmirkingrevenge
Wed Aug 10, 2022 12:24 pm
Forum: Off-Topic Hobbies
Topic: "Offtopic-posts-topic" NSFW
Replies: 6632
Views: 780727

Re: "Offtopic-posts-topic" NSFW

A really excellent video from 1969 following Master Gunsmith Wallace Gusler as he builds a flintlock rifle from start to finish using traditional tools and techniques: https://www.youtube.com/watch?v=qTy3uQFsirk Seeing someone make their own screws using only hand tools makes you realize just how mu...
by jackssmirkingrevenge
Wed Aug 10, 2022 10:15 am
Forum: Pneumatic Cannons
Topic: A look inside the "bleacher reacher" t-shirt launcher
Replies: 21
Views: 11284

Re: A look inside the "bleacher reacher" t-shirt launcher

Does anyone have more information regarding the slot in the piston or its function? I am assuming the piston is not using a standard o-ring, rather a cup seal? Do you mean this one? https://i.imgur.com/te9WWc8.jpg If so, that allows a standard o-ring to serve the same function as a cup seal. When g...
by jackssmirkingrevenge
Wed Aug 10, 2022 9:58 am
Forum: Hybrid Cannons
Topic: Hybrid pumped weapon project
Replies: 17
Views: 1988

Re: Hybrid pumped weapon project

I keep forgetting that you have the constraint of an urban area for testing :D The only thing that doesn't convince me is that the "skirt" of the pellet is "welded" to the target plate, it doesn't pass, only the "head" of the pellet passes to the other side... look at the photo I remember a similar ...
by jackssmirkingrevenge
Wed Aug 10, 2022 9:55 am
Forum: Combustion Cannons
Topic: How do you get consistent performance out of a "cheap" cannon?
Replies: 13
Views: 918

Re: How do you get consistent performance out of a "cheap" cannon?

hectmarr wrote:
Wed Aug 10, 2022 9:07 am
CHEAP, UGLY AND FUNCTIONAL! :)
There is a caveat in that "pretty is as pretty does", so when something is functional, there is a certain beauty in it regardless of its aesthetic attributes.
by jackssmirkingrevenge
Tue Aug 09, 2022 7:15 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Bolt action pcp rifle with a magazine
Replies: 4
Views: 223

Re: Bolt action pcp rifle with a magazine

Dembouz921 wrote:
Fri Jul 29, 2022 1:14 pm
I should also find a way to modify preset to delivers hundreds of bars since paintball tanks are cheap.
You can get a bit more pressure by adding more shims to the regulator main spring to increase the precompression:

Image
by jackssmirkingrevenge
Tue Aug 09, 2022 7:04 pm
Forum: Combustion Cannons
Topic: How do you get consistent performance out of a "cheap" cannon?
Replies: 13
Views: 918

Re: How do you get consistent performance out of a "cheap" cannon?

Bazooka wrote:
Sat Jul 30, 2022 2:15 am
It's dirty, fast and WORKS ;)
It used to be that we heard this attitude from North American users while efficiency was more of a European thing, how the tables have turned :D
by jackssmirkingrevenge
Tue Aug 09, 2022 7:02 pm
Forum: Hybrid Cannons
Topic: Hybrid pumped weapon project
Replies: 17
Views: 1988

Re: Hybrid pumped weapon project

I can pierce 0,7 mm sheet steel
That's quite impressive for lead pellets to be honest.

Have you tried with more than two layers of foil?
by jackssmirkingrevenge
Tue Aug 09, 2022 6:53 pm
Forum: General How-To & Discussion
Topic: "In the world of spuds today"
Replies: 2460
Views: 390227

Re: "In the world of spuds today"

https://youtu.be/2B2ZEN2Qu-Q Quite an interesting achievement but they really need to optimize the projectiles. The velocities they are getting are in the 200 feet per second range which is more arrow than airgun territory, although admittedly that's with projectiles five times heavier than your typ...
by jackssmirkingrevenge
Tue Aug 09, 2022 6:38 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Gel block calibration BB gun
Replies: 2
Views: 50

Re: Gel block calibration BB gun

I'd buy a high-end PCP airgun and swap the barrel with a smooth one for BBs Honestly that sounds like a sensible solution, and it doesn't even need to be a high end gun. My understanding is that you need to fire a 0.177” steel BB into the gelatin at a velocity of 590 +/- 15 feet per second, I would...
by jackssmirkingrevenge
Fri Jul 29, 2022 4:56 am
Forum: Combustion Cannons
Topic: Bottle Launcher "Mad Hilda XXL
Replies: 9
Views: 431

Re: Bottle Launcher "Mad Hilda XXL

Very interesting work!

I love the "spade grip", reminds me of a friend's post-apocalyptic (airsoft!) RPK:

Image
by jackssmirkingrevenge
Fri Jul 29, 2022 4:52 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Bolt action pcp rifle with a magazine
Replies: 4
Views: 223

Re: Bolt action pcp rifle with a magazine

Du très beau travail réalisé avec des matériaux "over the counter" et sans outils spécialisés, very good job!

I bet you could up the pressure even more but even as it is you're getting very respectable power and shot count.
by jackssmirkingrevenge
Fri Jul 29, 2022 4:45 am
Forum: Ammo & Parts
Topic: Great video testing spud gun failure/safety (ThebackyardScientist)
Replies: 4
Views: 1507

Re: Great video testing spud gun failure/safety (ThebackyardScientist)

I remember proposing this sort of test a long time ago :D That was very fun to watch, I'm amazed by how much pressure it took to actually burst a lot of the PVC, although that of course is no endorsement to exceed the working pressures recommended by the manufacturers. It also makes the point that e...
by jackssmirkingrevenge
Fri Jul 29, 2022 4:34 am
Forum: SpudFiles Discussion
Topic: Can't believe this site is still going
Replies: 4
Views: 1420

Re: Can't believe this site is still going

Moonbogg wrote:
Mon Jul 25, 2022 9:44 pm
I will either leave to my kids or force the kids to bury me with the cannons, not sure which yet.
The latter would be an interesting discovery for future archeologists :D in the former case they could be used to distribute your ashes 🤔
by jackssmirkingrevenge
Mon Jul 18, 2022 9:58 am
Forum: Pneumatic Cannons
Topic: the air cartridge we wanted
Replies: 8
Views: 3488

Re: the air cartridge we wanted

Take a look at this thread, plenty of examples on the same concept.
by jackssmirkingrevenge
Mon Jul 18, 2022 9:29 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Benjamin Model 30/30 CO2 Carbine Repeater "Hot Shot"
Replies: 8
Views: 4520

Re: Benjamin Model 30/30 CO2 Carbine Repeater "Hot Shot"

wyz2285 wrote:
Wed Jul 13, 2022 3:19 pm
it's good to see the forum is still alive and you're still here Jack!
Well, sort-of :roll: :D and glad to see you're still around too!