..........

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.
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Fri Mar 13, 2009 5:53 pm

..........
Last edited by chrissilvermancs on Mon Jun 07, 2021 11:55 pm, edited 3 times in total.
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Sat Mar 14, 2009 12:07 am

..........
Last edited by chrissilvermancs on Mon Jun 07, 2021 11:57 pm, edited 1 time in total.
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Fri Mar 20, 2009 10:04 pm

..........
Last edited by chrissilvermancs on Mon Jun 07, 2021 11:56 pm, edited 1 time in total.
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Sat Mar 21, 2009 2:07 am

My only real concern at this point...Chris, I have to be frank, this cannon is very poorly presented. The photos are small thumbnail size and your write-up is completely missing in action. You do get some points for showing some shooting video, but even those don't really move your cannon forward much in the overall picture.

You haven't given us much to discuss here. Replace the above thumbnails with larger versions of your photos and write up a description and specs of the cannon.
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

Sat Mar 21, 2009 2:37 am

Starman: sometimes you remind me of Simon from American Idol. :wink: :P

Its fun adding little improvements to a simple spray and pray eh? I remember doing the same thing to my first spud gun. I was so proud of the fact that I got a cpu fan in there, hooked up to a switch and everything. I bet it is much more fun to shoot now! But I gotta agree, these tiny pictures are the pits.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Sat Mar 21, 2009 2:58 am

jook13 wrote:Starman: sometimes you remind me of Simon from American Idol. :wink: :P
Why thank you...I think... 8) I don't really follow the show much nowdays but I do identify more with Simon's opinions than the others...but not always mind you.

I followed it a couple of years ago when one of the guys I had done some recording for, Chris Sligh, the curly haired, overweight fellow, made it to number 10 before being eliminated. Anyway, overall the show is all hype and mostly a huge waste of time...IMO.
User avatar
inonickname
First Sergeant 4
First Sergeant 4
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am

Sat Mar 21, 2009 4:00 am

Without the details or larger pictures it's hard to put a comment on it.

However, a fan and a meter are always good upgrades! Perhaps you should consider a ballvalve on the chamber rather than a cleanout cap for quicker venting of the chamber. Then if you want to go further there's camlocks...painting it- whatever you want to do.

Until we get some pictures (better) I'll leave my comment at good work. Lets see the pictures

:)
PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Sun Mar 22, 2009 5:50 pm

..........
Last edited by chrissilvermancs on Mon Jun 07, 2021 11:52 pm, edited 1 time in total.
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

Sun Mar 22, 2009 6:09 pm

The fan helps mix the fuel and air, making the shots more consistant.. It also is a great help with venting out the cannon after each shot.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Sun Mar 22, 2009 8:51 pm

chrissilvermancs wrote:also i have seen alot of people put spu fans and spark strips isnt that redundant. with a tazer on a spark strip thers no need for a cpu fan and vise verse right?
Yeah, what jook said. Both add a measure of performance in their own way. Go for a couple of gaps centrally located in the chamber and roughly 3-4" from each end of the chamber. Don't locate them close to each other...won't make any difference then.
Last edited by starman on Sun Mar 22, 2009 10:25 pm, edited 1 time in total.
User avatar
Moonbogg
Staff Sergeant 3
Staff Sergeant 3
United States of America
Posts: 1734
Joined: Mon Oct 13, 2008 10:20 pm
Location: SoCal
Has thanked: 163 times
Been thanked: 100 times

Sun Mar 22, 2009 9:38 pm

The cannon looks fun. My first and foremost concern is you should stand farther back or be shielded when shooting that wicked friggin nail thing. Accidents really do happen to people like us and they cause blood to spill.
Besides that, congrats on upgrading your cannon, thats totally awesome.
Like others have said, go for the 2 gap solution, it adds a bit of bang to the shot for sure. I'll tell you, I made my first cannon with 1 spark gap and no fan, and I thought something was wrong. I was disappointed with the power. Then the guys here said "add 3 spark gaps and a fan silly!" So I did and I was truly shocked at the increase in power.
Have fun dude...oh, grab a laser pen and use it as a laser sight! Why not? It lets you aim at stuff when it get dark outside.
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Mon Mar 23, 2009 8:56 pm

..........
Last edited by chrissilvermancs on Mon Jun 07, 2021 11:52 pm, edited 1 time in total.
User avatar
starman
Sergeant Major
Sergeant Major
United States of America
Posts: 3027
Joined: Wed Dec 12, 2007 12:45 am
Location: Simpsonville, SC

Donating Members

Mon Mar 23, 2009 10:13 pm

chrissilvermancs wrote:OK but wouldn't that cause serious damage to the fan i know people do it and all i just want some one to explain why the fan is not damaged if placed in front of the spark points.
The fan survives just fine. The pressure build up around the fan is equal on all sides so the net is no damage. The heat spike is also extremely short.

Re. the 8 inch stuff....it's only available at commercial pipe suppliers and is fairly expensive. You can also order reducer bushings, etc. from McMaster. Are you really sure you want to go down the 8" chamber trail?

And...your shooting your noise cannon at midnight....and you're surprised you're getting complaints?.... :roll:
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

Mon Mar 23, 2009 10:36 pm

If you are going with 8 inch pieces, prepare to bend over and take it like a prisnors first night. My cannon that used 6 inch fittings nearly broke the bank. I remember paying 26 bucks for one elbow and 14 bucks for a coupler. Thank god I didnt have to buy a tee. As you go up in size, the price goes up exponentially.

example:
http://www.pvcfittingsdirect.com/_e/90_ ... ule_40.htm

84 bucks for one elbow, the 12 inch elbow was 700 something bucks. Rediculous.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
chrissilvermancs
Private 4
Private 4
Algeria
Posts: 67
Joined: Sat Mar 07, 2009 2:18 am
Location: dd
Contact:

Sat Mar 28, 2009 3:00 am

..........
Post Reply