:p</div>"In the world of spuds today"
-
jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
- Been thanked: 344 times
That looks a bit basic for someone of your experience, is there something radical inside you're not telling us about?
hectmarr wrote:You have to make many weapons, because this field is long and short life
-
Gun Freak
- Lieutenant 5
- Posts: 4971
- Joined: Mon Jan 25, 2010 4:38 pm
- Location: Florida
- Been thanked: 8 times
Collapsible Travel Combustion. Clever 
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
-
jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
- Been thanked: 344 times
Try explaining it to the TSA thoughGun Freak wrote:Collapsible Travel Combustion. Clever
hectmarr wrote:You have to make many weapons, because this field is long and short life
-
Gun Freak
- Lieutenant 5
- Posts: 4971
- Joined: Mon Jan 25, 2010 4:38 pm
- Location: Florida
- Been thanked: 8 times
Compact Potato Transporter
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna" ■ M16 BBMG ■ Pengun ■ Hammer Valve Airsoft Sniper ■ High Pressure .22 Coax
Holy Shat!
In the world of spuds today:
Sabot design, shear skirts, and 3/8" tungsten carbide ball bearings.
(That's 10mm plate).
I didn't do much work on gas dynamic guns this summer, but I put together this little toy hybrid from spare parts and stock. I might post on it in a month or so, as it has some relatively novel features. It was my first attempt at implementing shear skirt projectiles, and has worked out well enough to encourage further experimentation at a later date. Unfortunately, that later date is almost two years away. Fortunately, I've finally started on that quasi-1D gun model in my sig.
Sabot design, shear skirts, and 3/8" tungsten carbide ball bearings.
(That's 10mm plate).
I didn't do much work on gas dynamic guns this summer, but I put together this little toy hybrid from spare parts and stock. I might post on it in a month or so, as it has some relatively novel features. It was my first attempt at implementing shear skirt projectiles, and has worked out well enough to encourage further experimentation at a later date. Unfortunately, that later date is almost two years away. Fortunately, I've finally started on that quasi-1D gun model in my sig.
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
-
jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
- Been thanked: 344 times
now you have my attention awesome!
So the sabot is also the "burst disk"?
What mix were you shooting at?
awesome!So the sabot is also the "burst disk"?
What mix were you shooting at?
hectmarr wrote:You have to make many weapons, because this field is long and short life
-
Brian the brain
- Moderator
- Posts: 3497
- Joined: Mon Dec 05, 2005 2:06 am
- Location: Holland
- Been thanked: 6 times
Eehm..10mm steel plate??
That would've been considered armour in WW1..?
What kind of beast have you created?!?!
Oh...and I really like looking at your skirt...and holes....
The damaged brass fitting...not so much...
That would've been considered armour in WW1..?
What kind of beast have you created?!?!
Oh...and I really like looking at your skirt...and holes....
The damaged brass fitting...not so much...
Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!
Can't ask for a better compliment!!
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!
Can't ask for a better compliment!!
The shear skirt is incorporated into the base of the sabot, yes. It's not shown in the FEA output though.jackssmirkingrevenge wrote:So the sabot is also the "burst disk"?
What mix were you shooting at?
This was with 2.75 : 7.24 propylene / oxygen at a pre-ignition pressure of 12.8 bar (absolute pressure - the nitrogen content was ~ 0.1% due to pre-shot purging with propylene). The targeted maximum pressure was 4500psi.
@Brian:
It's steel plate, but not nearly so hard as would have been used for armour. I wouldn't call this a beast - it's a little over half as energetic as a 12 gauge shotgun firing slugs.
The brass fitting isn't really damaged - the sealing faces and bore are very smooth, and the barrel connection is sound. It's just ugly on the outside.
Incidentally, this breech can seal in both directions. Any guesses on why that is?
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
-
jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
- Been thanked: 344 times
I wonder...DYI wrote:Incidentally, this breech can seal in both directions. Any guesses on why that is?
hectmarr wrote:You have to make many weapons, because this field is long and short life
Got it in one. I didn't budget enough time to finish the second stage. Had I completed it, performance would have been similar to that of the electric gun I posted two years ago (which is currently out of commission due to a fairly impressive transformer explosion... ).
).Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
-
jackssmirkingrevenge
- Five Star General
- Posts: 26203
- Joined: Thu Mar 15, 2007 11:28 pm
- Has thanked: 569 times
- Been thanked: 344 times
Brian the brain wrote:Oh...and I really like looking at your skirt...and holes
Got it in one. I didn't budget enough time to finish the second stage.
*fap fap fa...
Can't wait to be surrounded with the sort of wilderness that allows this sort of expermintation
No correspondingly impressive footage?Had I completed it, performance would have been similar to that of the electric gun I posted two years ago (which is currently out of commission due to a fairly impressive transformer explosion).
hectmarr wrote:You have to make many weapons, because this field is long and short life
The cameras were focused on the test apparatus, not the charging system.jackssmirkingrevenge wrote:No correspondingly impressive footage?
The footage goes like this: *60Hz hum* ... *ominous hissing noise* ... "Hmm, I wonder what's making it do th- *screen whiteout* *BOOM* ... "[expletives deleted]".
Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.
