Over and Under Combustion?

A place for general potato gun questions and discussions.

Do you have a normal gun, under and over, or both?

Normal
3
38%
Under and Over
4
50%
Both
1
13%
 
Total votes: 8
brumby
Private 3
Private 3
Posts: 55
Joined: Thu Mar 02, 2006 1:55 am

Mon Apr 03, 2006 11:40 pm

I was wondering if you could make an over and under Combustion?

would it be the same power as a normal one
User avatar
theregoesthewindow
Private 4
Private 4
Posts: 83
Joined: Sun Jan 22, 2006 8:05 pm

Mon Apr 03, 2006 11:57 pm

I've seen some so I'm sure that you can. I think that Saladtosser has some on his site. <A HREF="http://www.freewebtown.com/crazylilproj ... d1.htm">In the second section</A>
User avatar
Andrew52
Specialist
Specialist
Posts: 196
Joined: Sun Feb 26, 2006 5:01 pm

Fri Apr 21, 2006 10:41 pm

theres a little bit of flow restriction but its fine
User avatar
Shrimphead
Corporal
Corporal
Posts: 509
Joined: Thu Nov 17, 2005 7:42 pm

Fri Apr 21, 2006 11:33 pm

It would work, but it wouldn't be as powerful.
Controlled insanity = Genius
Life flies when you're being dumb.
Benny
Corporal 4
Corporal 4
Posts: 844
Joined: Wed Apr 19, 2006 8:21 pm
Location: Tasmania, Australia.

Sat Apr 22, 2006 2:48 am

it would be more ergonomic and better looking tho. :D
User avatar
SpudStuff
Sergeant 5
Sergeant 5
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Contact:

Sat Apr 22, 2006 2:57 am

i mase an adapter for my combustion ans the damage and distance ire so close it could habe been the wind. 2 inch elbows hae almost no restriction
User avatar
boilingleadbath
Staff Sergeant 2
Staff Sergeant 2
Posts: 1635
Joined: Sat Mar 12, 2005 10:35 pm
Location: Pennsylvania, USA

Sat Apr 22, 2006 7:18 pm

Over/unders are indeed possible to make, and because the chamber length doesn't add to the overall length, are more energetic for their size.

(And the above posters saying that full-diameter elbows don't restrict flow much speak the truth - they don't.)
User avatar
SpudStuff
Sergeant 5
Sergeant 5
Posts: 1410
Joined: Sat Dec 10, 2005 3:55 pm
Location: Cupertino, California
Contact:

Sat Apr 22, 2006 7:45 pm

i have pics of my adapter but i cant post them. but i cant post them
Attachments
CIMG2835.jpg
Last edited by SpudStuff on Sun Apr 23, 2006 1:08 am, edited 1 time in total.
User avatar
sgort87
Corporal 5
Corporal 5
Posts: 994
Joined: Sun Sep 18, 2005 10:32 am
Location: Lockport, Illinois

Donating Members

Sun Apr 23, 2006 12:12 am

So where's the checkbox for if you have both types? I've made plenty of each but my favorite is an over-under for its easier handling.

This is one of my favorite launchers. It was my second one. The pictures are horrible but it's pretty neat. http://forums.spudtech.com/topic.asp?AR ... C_ID=11360

(You need to be a spudtech member. It takes notime to set up if you're wondering.)
User avatar
rna_duelers
Staff Sergeant 3
Staff Sergeant 3
Posts: 1739
Joined: Mon Sep 26, 2005 7:07 am
Location: G-land Australia

Sun Apr 23, 2006 6:36 am

Just wondering doesnt the over under style in combustion ruduce the performance due to the turns which slows the expansion and release of it out the barrel?
User avatar
Ballad_Black
Specialist
Specialist
Posts: 159
Joined: Sat Oct 15, 2005 10:38 am

Sun Apr 23, 2006 8:36 am

Im not sure really, never made one to compare to a normal combustion, but I'd say even if proformance was reduced...you probably would'nt be able to tell that much of a difference. And, even if you could, over-under cannons just look soo much cooler that no one will care.
There is no civility, only politics.
Greed can be a very powerful ally.
User avatar
Rambo
Corporal
Corporal
Posts: 509
Joined: Sun Jan 15, 2006 2:07 pm

Sun Apr 23, 2006 8:39 am

Soory guyes for the stupid question but you see...What's and over/under combustion? :roll:
User avatar
CS
Moderator
Moderator
Posts: 1837
Joined: Fri Feb 18, 2005 5:32 pm
Location: Southern Utah

Donating Members

Sun Apr 23, 2006 12:16 pm

Gort- I edited the poll just for you...

Rambo- There is two basic configurations when it comes to potato guns. Straight is when the barrel and chamber are in-line with each other. Over and under is when your chamber is positioned beneath your barrel. It then takes 180 degrees to connect the chamber to the barrel, which is usually done with two elbows (90 degrees). Click <a href="http://www.spudfiles.com/spud_wiki/inde ... n">HERE</a> for more information on cannon configurations.

Holy S*^# Its Still Going- Where did you get the tubing for your metering system from? Is that the tubing used on the back side of toilets? If so, did you just chop off the old ends and secure in two hose barbs? Amidst all of this, very nice cannon.
User avatar
sgort87
Corporal 5
Corporal 5
Posts: 994
Joined: Sun Sep 18, 2005 10:32 am
Location: Lockport, Illinois

Donating Members

Mon Apr 24, 2006 11:21 am

Damn. I already voted...
Post Reply