Search found 25745 matches

by jackssmirkingrevenge
Mon Jul 20, 2020 6:34 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 32
Views: 7666

Re: JSR's workshop chronicles

Thanks, not sure if it's me or Amazon that messed up but some of them seem a bit longer than I needed.
by jackssmirkingrevenge
Mon Jul 20, 2020 4:58 am
Forum: Off-Topic Hobbies
Topic: I'm not photographer but....
Replies: 4
Views: 1253

Re: I'm not photographer but....

You can't post a picture like that without showing us your setup!

Also, it makes one feel insignificant in the vastness of it all, while simultaneously conveying a sense of freedom.
by jackssmirkingrevenge
Sun Jul 19, 2020 6:54 am
Forum: General How-To & Discussion
Topic: JSR's workshop chronicles
Replies: 32
Views: 7666

Re: JSR's workshop chronicles

Image

DRO galore! Finally received these things and can start thinking about mounting them.

Correct me if I am wrong but I believe the bars can be cut down to size without issue, yes?
by jackssmirkingrevenge
Sun Jul 19, 2020 6:36 am
Forum: Pneumatic Cannons
Topic: MJVO-3 venting air from the sides
Replies: 6
Views: 552

Re: MJVO-3 venting air from the sides

jrrdw wrote:
Sun Jul 19, 2020 4:25 am
"Exhaust-To atmosphere through holes in body."
Don't we all :D
by jackssmirkingrevenge
Sun Jul 19, 2020 6:34 am
Forum: General How-To & Discussion
Topic: Short question topic
Replies: 1488
Views: 101342

Re: Short question topic

Playing with the idea of a piston actuated semi automatic airsoft, there will be a spring behind the piston to return it to the home position which will allow another to drop into position, detent may be needed to stop it rolling out. Not sure what will happen to the piston as it reaches full strok...
by jackssmirkingrevenge
Sun Jul 19, 2020 6:16 am
Forum: Ammo & Parts
Topic: Brass as the foundation of a projectile?
Replies: 6
Views: 869

Re: Brass as the foundation of a projectile?

How would hollow cylinder and sabot go. Someone's thought about it. "Cookie Cutter" tubular bullets exist, but they need to be fired from a rifled barrel: https://i.imgur.com/FVnC5zY.jpg Light projectiles with very high velocity and good ballistic coefficient due to the low frontal area. They were ...
by jackssmirkingrevenge
Sun Jul 19, 2020 5:50 am
Forum: Combustion Cannons
Topic: Colinfurze makes a combustion repeater
Replies: 1
Views: 481

Re: Colinfurze makes a combustion repeater

Only question I have is how does he vent if before the next shot? Good question, there doesn't seem to be a fan or anything. At about 11 minutes you can see there's a line connected to the chamber, maybe he's injecting compressed air? The reloading mechanism reminds me of those automatic mortars: h...
by jackssmirkingrevenge
Sun Jul 19, 2020 4:53 am
Forum: Combustion Cannons
Topic: New member, new toy.
Replies: 1
Views: 630

Re: New member, new toy.

Welcome to the forum and interesting concept!

I am reminded of the M18 recoilless rifle that had a less conventional grip setup:

Image

Perhaps a sight mount of sorts would be useful.
by jackssmirkingrevenge
Mon Jun 22, 2020 8:06 pm
Forum: Pneumatic Cannons
Topic: "Sabotless" Semi-Automatic Shotgun Concept
Replies: 19
Views: 4801

Re: "Sabotless" Semi-Automatic Shotgun Concept

The trigger you actually draw is the initiator of the recharge of the repeat hybrid. It is the mechanical locking of the piston, which allows it to move to the right, by the action of the spring, and then, to the left by the action of compressed air. To fire, the trigger is the piezoelectric. What ...
by jackssmirkingrevenge
Mon Jun 22, 2020 7:44 pm
Forum: BB, Airsoft, and Pellet Guns
Topic: Crosman Trapmaster Shell Ejection
Replies: 2
Views: 402

Re: Crosman Trapmaster Shell Ejection

Sometimes it ends up back in the chamber...
by jackssmirkingrevenge
Mon Jun 22, 2020 7:40 pm
Forum: Off-Topic Hobbies
Topic: The question "what is the best tank?" as a way of examining engineering stereotypes
Replies: 3
Views: 688

Re: The question "what is the best tank?" as a way of examining engineering stereotypes

Tiger Tank workshop manual on the filing cabinet, lol, I got that in PDF. I have this in hardback... https://i.imgur.com/291GT2f.jpg To tie with what is said in the video, I am a great admirer of what comes out the German compulsion to do things "properly" resulting in something big, complicated, b...
by jackssmirkingrevenge
Sun Jun 21, 2020 9:34 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Crosman Trapmaster Shell Ejection
Replies: 2
Views: 402

Crosman Trapmaster Shell Ejection

A little slow motion study of a classic CO2 shotgun: https://youtu.be/WTx04U4Tvg4 When the button under the stock is pressed, the whole barrel moves forward under spring pressure, pulling the cartridge with it as it is held in the breech by friction. The rim of the cartridge then caught on the eject...
by jackssmirkingrevenge
Sun Jun 21, 2020 6:39 am
Forum: Off-Topic Hobbies
Topic: The question "what is the best tank?" as a way of examining engineering stereotypes
Replies: 3
Views: 688

The question "what is the best tank?" as a way of examining engineering stereotypes

I found this quite interesting:



The Tank Museum's channel in general is worth looking through, a lot of illuminating material that is very well presented.
by jackssmirkingrevenge
Sun Jun 21, 2020 5:42 am
Forum: BB, Airsoft, and Pellet Guns
Topic: Air Stapler
Replies: 6
Views: 760

Re: Air Stapler

Image

A good diagram of how it works
by jackssmirkingrevenge
Sun Jun 21, 2020 5:27 am
Forum: Pneumatic Cannons
Topic: "Sabotless" Semi-Automatic Shotgun Concept
Replies: 19
Views: 4801

Re: "Sabotless" Semi-Automatic Shotgun Concept

I was having a bit of a think about this idea and it seems it could be greatly simplified and also made more efficient:

Image

The piston itself becomes the hammer that opens an inline balanced valve.