Second Effort

Boom! The classic potato gun harnesses the combustion of flammable vapor. Show us your combustion spud gun and discuss fuels, ratios, safety, ignition systems, tools, and more.
t_cat50
Recruit
Recruit
Posts: 2
Joined: Sun Apr 04, 2010 1:58 pm

Sun Apr 04, 2010 2:35 pm

Still Spraying into the back of the chamber, although after running out of Static Guard this weekend, I raided my Father in Law's Laundry Room and found a new fuel source. K2R Spot Remover.. It's a game changer.. 1 second burst into the chamber was sending golf balls 400 plus into the lake..

Anyway, I took an old license plate and the handle from a packing tape dispenser for the bottom handle which is very comfortable. The trigger mechanism is a standard electronic bbq lighter and the handle from and old gas grill.

Looking forward to going to the next level with a pneumatic or hybrid..
Attachments
Photo_011710_010.jpg
Photo_011710_004.jpg
Photo_011710_002.jpg
Photo_011710_009.jpg
Photo_011710_007.jpg
Photo_011710_006.jpg
Photo_011710_002.jpg
Photo_011710_005.jpg
Photo_011710_003.jpg
base_media.jpg
base_media.jpg (1.73 KiB) Viewed 4618 times
User avatar
BigGrib
Corporal 2
Corporal 2
Posts: 652
Joined: Mon Oct 01, 2007 11:43 pm
Location: TriCities, WA
Contact:

Sun Apr 04, 2010 3:07 pm

Very Nice... I Like. The only thing I want to know about is that reducer. It is rated for pressure, because around here DWV reducers look like that. Other than that It looks awesome. I'd love to see it with regulated propane instead of spray and pray though. Good Job.
Yea, that's definitely going to get you at least a tazer.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>
facebook.com/biggrib
User avatar
Gun Freak
Lieutenant 5
Lieutenant 5
Posts: 4971
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Been thanked: 7 times

Sun Apr 04, 2010 3:10 pm

It's combustion... most combustions use DWV parts. They are fine for combustions as they only are exposed to high pressure for a few milliseconds.
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!
metalmeltr
Specialist 4
Specialist 4
Posts: 426
Joined: Thu Dec 18, 2008 3:42 pm
Location: united states

Sun Apr 04, 2010 4:00 pm

I dont think it will be a problem since in is spray and pray, i would like to see something stronger on metered propane.
User avatar
deathbyDWV
Corporal
Corporal
Posts: 576
Joined: Sat May 16, 2009 4:02 pm
Location: Owasso, OK

Sun Apr 04, 2010 5:32 pm

Good job. Also don't sitck your face behind the back cleanout cap. It also isn't pressure rated and they commonly blow out...
Life's too short to mark off the items on your wish list...
User avatar
chinnerz
Specialist 4
Specialist 4
Posts: 470
Joined: Mon Dec 28, 2009 8:08 am

Sun Apr 04, 2010 7:32 pm

hahaha i love it man!!
Lol bumper stickers :D
Image
User avatar
MikeNice
Specialist
Specialist
Posts: 115
Joined: Tue Nov 28, 2006 4:37 pm
Location: Queen Creek, AZ

Tue Apr 27, 2010 12:32 pm

Very nice, especially for 2nd effort! I am personally a fan of spray and pray. It's old school . . . an art form. You've got some really cool features for just your 2nd gun. I like the tape dispenser handle, very creative. I also like the d-ring looking thing on the clean-out. I've been meaning to get to that on one of my guns someday but have still been relying on the good ole' strap wrench to work sticky clean-outs. Like the ignitor. Is it dual spark or single? With a chamber that size (looks HUGE) you may want to consider dual spark. It will increase reliability quite a bit. I'm not even going to get into pressure rated vs. not. Its a combustion . . . it hardly matters. Nice gun dude, keep them coming!
Your face is going to freeze like that. http://iplaaz.freehostia.com/
User avatar
Technician1002
Captain
Captain
Posts: 5189
Joined: Sat Apr 04, 2009 11:10 am

Tue Apr 27, 2010 5:23 pm

For a spran-n-pray, ABS is more chemical resistant to most solvents. PVC was made for just water. ABS was made to withstand drain cleaners and other household chemicals that go down the drain.

ABS is more impact resistant and less lilely to break into shards.
t_cat50
Recruit
Recruit
Posts: 2
Joined: Sun Apr 04, 2010 1:58 pm

Wed Apr 28, 2010 11:22 am

THanks for the comments guys! I'm thinking about trying to build a pneumatic golf ball gun that I can fit into a golf bag. Should be good for a gag on the tee box once in a while...

Don't really know anything about pneumatics.. Pretty confused about the whole "burst disk / valve" thing as well as PSI / Volume... Anybody got ideas?

T_Cat
metalmeltr
Specialist 4
Specialist 4
Posts: 426
Joined: Thu Dec 18, 2008 3:42 pm
Location: united states

Wed Apr 28, 2010 1:59 pm

Technician1002 wrote:For a spran-n-pray, ABS is more chemical resistant to most solvents. PVC was made for just water. ABS was made to withstand drain cleaners and other household chemicals that go down the drain.

ABS is more impact resistant and less lilely to break into shards.
I belive you are wrong on that point. PVC and ABS are both used in the DWV systems of homes. PVC has to be able to withstand the same drain cleaners as ABS because they are used in that same aplication. While ABS may be less likely to shatter, in the pipe's intended aplication they must be capble of withstanding the same chmicals.
User avatar
MikeNice
Specialist
Specialist
Posts: 115
Joined: Tue Nov 28, 2006 4:37 pm
Location: Queen Creek, AZ

Wed Apr 28, 2010 3:04 pm

Do we seriously need to have the EVER on going PVC vs. ABS debate? Really? It's on 37 zillion threads here. Can we either agree to disagree or just move on with it already? For a combustion it's almost irrelevant. We all like what we like for our own reasons. We don't need to hijack this thread to kick a dead horse. Dude built an awesome gun especially for round 2. Lets not take that away because we all need to debate polymers. Lame.
Your face is going to freeze like that. http://iplaaz.freehostia.com/
Post Reply