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Golf Ball Cannon
Posted: Sat Feb 05, 2005 6:20 pm
by PCGUY
<div align="center">
GOLF BALL CANNON
Provided By Mr.Plow - <a href="
http://www.geocities.com/boomstick989"> ... 9</a></div>
Posted: Sun Feb 06, 2005 4:49 pm
by theexp
Posted: Mon Sep 12, 2005 12:40 am
by deathtodeer666
man I bet that kicks like a mule
Posted: Mon Sep 12, 2005 7:11 pm
by CS
A little maybe but not that much because golf balls arent that heavy. Here is pimpmann22's third law of spudgun physics "Heavy ammo= Lots of kick, Light ammo= Little kick"
Posted: Mon Sep 12, 2005 7:19 pm
by boilingleadbath
In fact, recoil should go pretty much as:
sqr(M<sub>projectile</sub>)
Posted: Mon Sep 12, 2005 8:35 pm
by drac
English blb, english. Not many people hear know the terms from the engineer's lexicon.
Posted: Tue Sep 13, 2005 2:26 pm
by boilingleadbath
When did "sqr" [square root] become a term relinquished to engineers!? Heck, excell uses it. Or are you refering to the subscript of the "M" (mass)? I didn't really think M for mass, or subscripts where that exotic...
For those that don't know what a square root is (although I might recomend to wait a few years before you build a spudgun) this basicaly means that if one where to quadruple the projectile mass, the recoil would double.
My reasoning (which ignores the propelent gas, so it's not the most accurate) goes like this:
The energy given to the projectile is always the same. (pretty close, with a good valve and common masses)
Solving E<sub>nergy</sub> = 1/2M<sub>ass</sub>V<sub>velocity</sub><sup>2</sup> for V gives V = sqr(1/2ME) ... and because 1/2 & E are constant, we can ignore them for the rest of the reasoning.
The momentum of an object: P<sub>(momentum)</sub> = MV.
Thus; P = M*sqr(M)
... oops, it seems I messed up on my mental algebra the first time through; the table should be like this:
<table align="left" border="1" cellpadding="5" cellspacing="5">
<tr><td>mass</td><td>recoil</td></tr>
<tr><td> .25</td><td>.125</td></tr>
<tr><td>1</td><td>1</td></tr>
<tr><td>2</td><td>1.68...</td></tr>
<tr><td>4</td><td>8</td></tr>
</table>
Posted: Tue Sep 13, 2005 6:14 pm
by drac
Ahhh, thats the physicist's lexicon. My bad.
Your explanation clears things up a lot. Thanks.
Posted: Tue Sep 13, 2005 6:24 pm
by saladtossser
blb, work on the table!!!!
Posted: Sun Oct 02, 2005 6:04 am
by rna_duelers
yer thats basic, heavy ammo=big kick...water= blown out of hand cannon and big arse bruse on knee cap....lol was lots of fun but i would not recomend it to anyone..u get hurt
by the way it is a nice clean gun
Posted: Sun Oct 02, 2005 1:35 pm
by PCGUY
Wow BLB your table seriouselly screwed up the forums, however I fixed it for you 8) .
Posted: Mon Oct 03, 2005 12:25 pm
by bubblebathman
that looks like that would hurt if ur arm was in the way of that kick OWWWWW
Posted: Thu Oct 06, 2005 12:27 pm
by finchmeisterflex
I was wondering what kind of material the solenoid valve was made from.
If it is metal please can someone tell me where to find one that could be bought on a small budget?
Posted: Thu Oct 06, 2005 4:56 pm
by spudshot
its just a normal plastic sprinkler valve, just a different brand than the green orbits you normally see
Posted: Sun Nov 27, 2005 9:14 pm
by Obctg
is the recoil measured in newtons, or is it just a ratio
