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Over and Under Combustion?

A place to ask general spud cannon related questions.
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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
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Over and Under Combustion?

Unread postAuthor: brumby » 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
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Unread postAuthor: theregoesthewindow » 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/crazylilprojects/spud1.htm">In the second section</A>
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Unread postAuthor: Andrew52 » Fri Apr 21, 2006 10:41 pm

theres a little bit of flow restriction but its fine
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Unread postAuthor: Shrimphead » Fri Apr 21, 2006 11:33 pm

It would work, but it wouldn't be as powerful.
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Unread postAuthor: Benny » Sat Apr 22, 2006 2:48 am

it would be more ergonomic and better looking tho. :D
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Unread postAuthor: SpudStuff » 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
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Unread postAuthor: boilingleadbath » 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.)
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Unread postAuthor: SpudStuff » Sat Apr 22, 2006 7:45 pm

i have pics of my adapter but i cant post them. but i cant post them
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Unread postAuthor: sgort87 » 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.)
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Unread postAuthor: rna_duelers » 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?
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Unread postAuthor: Ballad_Black » 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.
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Unread postAuthor: Rambo » Sun Apr 23, 2006 8:39 am

Soory guyes for the stupid question but you see...What's and over/under combustion? :roll:
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Unread postAuthor: CS » 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/index.php?title=Launcher_configuration">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.
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Unread postAuthor: sgort87 » Mon Apr 24, 2006 11:21 am

Damn. I already voted...
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