TBMA-230 V2.0

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.
SpudBlaster15
First Sergeant 3
First Sergeant 3
Seychelles
Posts: 2400
Joined: Wed Oct 18, 2006 11:12 pm
Has thanked: 2 times
Been thanked: 10 times

Wed Nov 23, 2011 7:03 pm

Thermobaric Mass Accelerator Version 2.0
AKA Gun Freak's favourite launcher.

Recently, I decided to rebuild the TBMA-230, which had been sitting in storage for nearly a year. The primary objectives were to compact the launcher for transport purposes, improve the fueling system, and solve the piston and chamber vent valve failure issues. All of these areas have been addressed in V2.0.

Specifications

Launcher Configuration:
Over/Under
Chamber:
Galvanized steel/malleable iron construction, 2.067" inside diameter, ~22" length, ~75in<sup>3</sup> volume
Barrel:
Galvanized steel EMT conduit, 1.61" inside diameter, 48" length, ~100in<sup>3</sup> volume
Valve:
1.61" porting piston valve with o-ring sealed steel piston and spool valve venting system
Loading:
2" Aluminum cam-lock fittings
Fueling/Filling Setup:
5/3 lever action directional control valve, volumetric meter, 3000PSI rated steel meter isolation ball valve, optional 3/2 DCV operated modular oxygen/air filling setup.
Fuel:
Onboard propylene cylinder
Ignition:
12kV HV power supply with ignition safety switch and LED indicator, 1/8" NPT spark plug
Venting:
Pressurized air exhausting system
Estimated Performance:
3200ft-lbs energy, 1100FPS for a 100g round @ 7X air/propylene

Pictures

Launcher overview:
2011-12-23 12.36.30.jpg
Launcher w/accessories:
2011-12-23 12.39.25.jpg
Chamber overview:
2011-12-23 12.36.45-1.jpg
2011-12-23 12.37.45.jpg
Fueling and filling operations are managed by a lever action 5 way 3 position directional control valve (5/3 DCV):
2011-12-23 12.37.06.jpg
Pilot setup:
2012-01-04 16.45.46.jpg
The piston now uses 1/2" UNC 304 stainless steel threaded rod, which improves corrosion and bending resistance. Travel distance is ~1.5", with a calculated opening time of ~6ms at 5X.
2011-11-22 20.27.04.jpg
Modular oxygen supply:
2011-12-23 12.40.58.jpg
Operation of the 5/3 DCV:
DCVneutral.jpg
DCVneutral.jpg (25.21 KiB) Viewed 7352 times
DCV1.jpg
DCV1.jpg (27.68 KiB) Viewed 7352 times
DCV2.jpg
DCV2.jpg (26.47 KiB) Viewed 7352 times
Edit: Added thumbnail image.

Edit 2: Updated with new pictures.

Edit 3: 8 years later, finally restored the pictures
Last edited by SpudBlaster15 on Fri Jul 10, 2020 2:06 pm, edited 7 times in total.
User avatar
mobile chernobyl
Corporal 3
Corporal 3
United States of America
Posts: 755
Joined: Sun Dec 03, 2006 11:53 am
Been thanked: 7 times

Wed Nov 23, 2011 7:11 pm

Easily one of the most aesthetically pleasing, powerful and well thought out guns made of standard plumbing parts! :D
User avatar
POLAND_SPUD
Captain
Captain
Posts: 5402
Joined: Sat Oct 13, 2007 4:43 pm
Been thanked: 1 time

Wed Nov 23, 2011 8:08 pm

Operation of the DCV
Ohh god I almost got an errection when I saw the diagrams!!
Children are the future

unless we stop them now
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Wed Nov 23, 2011 8:14 pm

Ohh god I <s>almost</s> instantly got an errection when I saw the diagrams!!
Very nice SB. Very nice indeed. Honored to be mentioned in the second line <3
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Lockednloaded
Staff Sergeant
Staff Sergeant
United States of America
Posts: 1566
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Been thanked: 6 times

Wed Nov 23, 2011 8:55 pm

Its alright I guess, have you thought of converting it to a pneumatic? You'd get a much better gun and you would no longer be such a noob.

:lol:
I love lamp
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Wed Nov 23, 2011 9:16 pm

I didn't think that was very funny. This cannon is pretty kick ass and I never at all hinted at the superiority of a pneumatic version.
OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 319 times

Donating Members

Wed Nov 23, 2011 10:24 pm

POLAND_SPUD wrote:Ohh god I almost got an errection when I saw the diagrams!!
I bet you dropped your pants and reached for the tissues almost immediately ;)

Very nice work as always SB, looking forward to some new foorage :)
hectmarr wrote:You have to make many weapons, because this field is long and short life
evanmcorleytv
Specialist 3
Specialist 3
Posts: 350
Joined: Sat Jun 19, 2010 3:44 pm
Location: Tuscaloosa, AL

Wed Nov 23, 2011 11:04 pm

Awesome job!

I might just pirate your design for mine when I build mine after Christmas! (cash pending of course, I already have 2 pneumatic going on right now lol)
That is, if you don't mind.. haha
SpudBlaster15
First Sergeant 3
First Sergeant 3
Seychelles
Posts: 2400
Joined: Wed Oct 18, 2006 11:12 pm
Has thanked: 2 times
Been thanked: 10 times

Wed Nov 23, 2011 11:53 pm

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 9:31 pm, edited 2 times in total.
evanmcorleytv
Specialist 3
Specialist 3
Posts: 350
Joined: Sat Jun 19, 2010 3:44 pm
Location: Tuscaloosa, AL

Thu Nov 24, 2011 12:09 am

POLAND_SPUD wrote:Ohh god I almost got an errection when I saw the diagrams!!
jackssmirkingrevenge wrote:I bet you dropped your pants and reached for the tissues almost immediately ;)
SpudBlaster15 wrote:I'm sure once PS saw the push to connect fittings, JSR's prediction became valid. :wink:

lol, Poland "faps" to cannons............... OMG. He should make that his sig.

"I fap to cannons, ifap2cannons, ifaptocannons, 1f4p2(4nn0n5" there are multiple ways of displaying it, but they all deliver the same message. haha

evanmcorleytv wrote:I might just pirate your design for mine when I build mine after Christmas! ...That is, if you don't mind..
SpudBlaster15 wrote:I have no problem at all with people using any of my designs. Feel free to build whatever you want.
Thanks! I'll be sure to start as soon as I can!
User avatar
MrCrowley
Moderator
Moderator
Posts: 10078
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Been thanked: 3 times

Thu Nov 24, 2011 12:34 am

SpudBlaster15 wrote:and solve the piston and chamber vent valve failure issues
Piston bounce or sealing issues?

You actually hip fire this thing or do you rest the elbow against your shoulder? Unless you fire lefty, looks like there's a lot of stuff in the way that would hit up against you with recoil :shock:

I've always loved the sleek pilot setup, now even more nice looking.
SpudBlaster15
First Sergeant 3
First Sergeant 3
Seychelles
Posts: 2400
Joined: Wed Oct 18, 2006 11:12 pm
Has thanked: 2 times
Been thanked: 10 times

Thu Nov 24, 2011 1:44 am

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras nec placerat erat. Vivamus dapibus egestas nunc, at eleifend neque. Suspendisse potenti. Sed dictum lacus eu nisl pretium vehicula. Ut faucibus hendrerit nisi. Integer ultricies orci eu ultrices malesuada. Fusce id mauris risus. Suspendisse finibus ligula et nisl rutrum efficitur. Vestibulum posuere erat pellentesque ornare venenatis. Integer commodo fermentum tortor in pharetra. Proin scelerisque consectetur posuere. Vestibulum molestie augue ac nibh feugiat scelerisque. Sed aliquet a nunc in mattis.
Last edited by SpudBlaster15 on Wed Jul 14, 2021 9:31 pm, edited 1 time in total.
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 319 times

Donating Members

Thu Nov 24, 2011 1:55 am

SpudBlaster15 wrote:Mostly just to DCVs, push-to-connect fittings, air cylinders, and pics of a certain member's sister. :lol:
HAHAHAHA is that a reference to this thread :D :D :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
ramses
Staff Sergeant 2
Staff Sergeant 2
United States of America
Posts: 1679
Joined: Thu May 29, 2008 6:50 pm

Thu Nov 24, 2011 11:11 am

jackssmirkingrevenge wrote:
SpudBlaster15 wrote:Mostly just to DCVs, push-to-connect fittings, air cylinders, and pics of a certain member's sister. :lol:
HAHAHAHA is that a reference to this thread :D :D :D
That is great!


What is the maximum ROF of this system, without loading projectiles? I can't imagine it would take more than about 5 seconds per shot!
POLAND_SPUD wrote:even if there was no link I'd know it's a bot because of female name :D
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6569
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:

Donating Members

Thu Nov 24, 2011 11:38 am

HAHAHAHA is that a reference to this thread


and to a few chat conversations lol.

@Gun Freak, What mention? I thought you where allergic to hybirds?

Nice cannon Spudblaster15.
Post Reply