|Hey folks ...
Justin and I were looking for something to do on a cold winter's Sunday and decided we needed something big that fired something, preferably something that made a lot of noise and was basically hazardous.
So we made a Spud-zooka
Based on current world events, decided a desert-camo paint
scheme was most appropriate.
It has a 3" diameter by 11 inch long combustion chamber and a
2 inch diameter (i.e. 200 caliber, 50mm) by 3 foot long barrel. All
from PVC pipe picked up for about $10 from the hardware store.
Trigger is a piezo electric starter ($10) for a BBQ wired to
couple of deck screws in the combustion chamber. We measure fuel
a propane torch into a 60cc plastic syringe ($2 from a farm supply
supposed to be used to give shots to horses!) and then inject through a
valve stem in the combustion chamber.
With 60cc of propane it will fire a spud about 300
shorter ranges it mashes empty coffee cans (not much left of the spud
and punches right through cardboard boxes. Don't know yet if sour
and bacon bits will affect performance.
Currently looking for more interesting targets to blast and
considering using frozen spuds.
We also made a Trebuchet (don't have any photos yet) that is about 18 inches tall and flings a walnut about 25 feet. For the uninitiated, a Trebuchet is basically a cross between a catapult and a sling shot. Our Treb' looks about like the one at www.trebuchet.com . Or, check out www.biochemistry.bham.ac.uk/gcoates/treb.html for more info.
Or, what do you get with a really big Trebuchet and a dead cow --
The full, nicely twisted site is at;
The Treb' worked but didn't make enough noise or do enough damage, hence the spud-zooka.
Looking forward to the 4th of July when (hopefully) we will have many irresponsible adults around who like to blow things up ...
Jim & Justin Sluka