Slinging.org Forum - table top siege engines

slingbadger

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table top siege engines
Sep 11^th, 2005 at 10:21am

Interesting thing happened this weekend. Some friends of mine had a table top catapult contest. The idea was to knock down a tower of Jenga bricks at 5 10 and 15 feet.
Most went with either the counterweight trebuchet, or a torsion catapult ( onanger). Here I was with my little man powered perrier.
The problem with both counterweights and the torsion ones is each requires some tricky adjustments for distance.
Aperrier is simple, and just requires a slight pull to work. Guess who knocked down the tower??

Quote the contest organizer " I never thought that that thing would work. It looks too simple" HEHEHEH

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Castle7 Senior Member Offline I'm on fire today!! Posts: 453 GR, Michigan Gender:	Re: table top siege engines Reply #1 - Sep 11^th, 2005 at 4:20pm A what?!?! Never heard of a perrier. I'm going to search the net for one but do you have any links or pics of one. Thanks
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Yahweh Bless you in Yeshua Interfector Viris Spurii Offline Matthew 11:25-30 Posts: 1700 Gender:	Re: table top siege engines Reply #2 - Sep 11^th, 2005 at 4:53pm You know.....the bottle.....you pull on the cork and it goes shooting off!
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Castle7 Senior Member Offline I'm on fire today!! Posts: 453 GR, Michigan Gender:	Re: table top siege engines Reply #3 - Sep 11^th, 2005 at 5:05pm Oh yeah. I didn't think liquor.
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english Ex Member	Re: table top siege engines Reply #4 - Sep 12^th, 2005 at 2:41am Perrier is a brand of sparkling water. Non alcoholic. But a perrier, in this context, is a siege engine like a trebuchet, but without a weight and pulled by hand.
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Castle7

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Re: table top siege engines
Reply #5 - Sep 12^th, 2005 at 12:17pm

I knew perrier is sparkling water but I'm pretty sure there is a champane (I don't think I spelled that right, did I) by that name.
I did a little searching before techstuf posted and I found a machine called a perrier. Very sketchy at best. But it seemed to be like the trebuchet the chinese first used. Traction trebuchet I think they were called.
Sounds the same as a perrier, is it?
Like I said before, you got any links or pics?

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If I build it, they will run.&&-Mikeel&&&&

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slingbadger Interfector Viris Spurii Offline Don't Badger a Badger Posts: 3237 Akron NY Gender:	Re: table top siege engines Reply #6 - Sep 13^th, 2005 at 9:14am for more info on perriers and such, look on the grey companys catapult page. good stuff
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Castle7 Senior Member Offline I'm on fire today!! Posts: 453 GR, Michigan Gender:	Re: table top siege engines Reply #7 - Oct 11^th, 2005 at 6:17pm Found another site too. http://www.xenophongroup.com/montjoie/ngp_arty.htm#pierriere
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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: table top siege engines Reply #8 - Oct 12^th, 2005 at 11:43am lol it's a frame mounted staff sling :-) So how big was yours then ?
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slingbadger

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Re: table top siege engines
Reply #9 - Oct 13^th, 2005 at 9:28am

The actual staff of the catapult is 12 in. long. All together, its about 15 in high. The main support is one single beam, ith a wide groove in the top for the beam. A peg holds the beam in place. The proportion of the beams balance point is essential to the efficiency of the throw. Too much beam on one side of the balance point screws it up. Undecided

My Scouts made a full size version of this once, and didn't believe that the proportion made that big a difference. I let them fool with it, and they found out the hard way that prpoer balance proportion is the most important thing Grin

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The greatest of all the accomplishments of 20th cent. science has been the discovery of human ignorance The main difference between genius and stupidity is that genius has it's limits.-Einstein I'm getting psychic as I get older. Or is that psychotic?

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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: table top siege engines Reply #10 - Oct 16^th, 2005 at 10:31am so how long did you give yourselves to produce these mini siege engines ?
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slingbadger

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Re: table top siege engines
Reply #11 - Oct 16^th, 2005 at 11:10am

The table top one I can put together in a few hours. The big one took time, since we had to cut the wood. It was all lashed together for a catapult competition at a Klondike. The thing that took the longest was weaving the sling
Of course the problem was at the competition, is that we had to fire uphill. Apparently, the Troop running it thought that that wouldn't affect the distance of the throws. ( Clearly, they didn't do research). Even still, we came in firs, before more elaborate counterweight trebuchet designs. Some found out also that torsion catapults (onanger) don't work well in the snow, because the rope is so weather sensitive. Oh well.

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The greatest of all the accomplishments of 20th cent. science has been the discovery of human ignorance The main difference between genius and stupidity is that genius has it's limits.-Einstein I'm getting psychic as I get older. Or is that psychotic?

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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: table top siege engines Reply #12 - Oct 16^th, 2005 at 12:19pm [quote]Some friends of mine had a table top catapult contest. The idea was to knock down a tower of Jenga bricks at 5 10 and 15 feet[/quote] How long did you have to build the table top ones ?
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slingbadger Interfector Viris Spurii Offline Don't Badger a Badger Posts: 3237 Akron NY Gender:	Re: table top siege engines Reply #13 - Oct 17^th, 2005 at 9:08am A month. This gave me the time to make corrections and figure out a good way of improving the accuracy.
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Curious Aardvark Forum Moderation Offline Taller than the average Dwarf Posts: 13965 Midlands England Gender:	Re: table top siege engines Reply #14 - Oct 21^st, 2005 at 1:00pm ah right - I got the impression you'd all done it in one day :-) I'm still impressed but not quite so amazed at your speedy joinery skills :-)
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