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cool miniature catapult

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What do you think?

Freakin sweet
1
20%
If it was bigger id would be better
4
80%
 
Total votes : 5
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cool miniature catapult

Unread postAuthor: 666lucky693 » Sat Nov 10, 2007 6:44 pm

I had to make this for my senior project. I goes pretty good its made out of wood rope a fiberglass arm and a pvc screw cap as the basket http://www.youtube.com/watch?v=qooQbjf2ow4 here is a vid
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Last edited by 666lucky693 on Sat Nov 10, 2007 7:25 pm, edited 2 times in total.
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Unread postAuthor: jrrdw » Sat Nov 10, 2007 6:51 pm

I wanna see a video of this working. Whats it made out of? Details my good man, details. Looks really neet.
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Unread postAuthor: 666lucky693 » Sat Nov 10, 2007 7:44 pm

Ok i fixed it and i uploaded the video to youtube
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Unread postAuthor: Novacastrian » Sat Nov 10, 2007 8:15 pm

Ok, i like the simplicity however in the vid it seemed a little under powered.
I voted bigger would be better- most things are, except women :P
Any idea on the draw weight? Oh and weight of projectiles?
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Unread postAuthor: 666lucky693 » Sat Nov 10, 2007 8:17 pm

well in the video the projectile was a snowball and it went 20 feet and hit a wall
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Unread postAuthor: noob of noobs » Sat Nov 10, 2007 9:38 pm

That's pretty nifty. I too though would apreciate a larger model; something that can deliver a larger payload farther with more force. What I really want to know though is the effect upon the target. Any cool damage pics?
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Unread postAuthor: 666lucky693 » Sat Nov 10, 2007 11:03 pm

damage pictures aint gonna happen cause of it being hard to aim and i wanted to build it bigger but the fact it would take too long and i would lose intrest
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Unread postAuthor: jrrdw » Sun Nov 11, 2007 7:03 am

Looks like you anteked the wood with a tourch??? I voted Fricken Sweet! I like it! Fun fun fun!!! 8)
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Unread postAuthor: dauphinoise potato » Sun Nov 11, 2007 7:43 am

That's a nice idea it looks like it uses a torsion bundle for the power. Those are called onager's. To get much better range add asling to the end of the throwing arm, like a trebuchet, it will greatly improve performance.

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Unread postAuthor: jimmy101 » Sun Nov 11, 2007 11:44 am

Here's my mini treb.

Knocked it together one day based on a single online photo. My WAG's at the various dimensions were way off, the main towers should have been twice as tall, the throwing arm longer etc. Throws nuts.
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Locked and loaded. The thin stick on the right is the trigger.
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Unread postAuthor: iknowmy3tables » Sun Nov 11, 2007 12:02 pm

wow that mini is sweet jimmy I could almost swear that it's a hobby building kit or something that you bought
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Unread postAuthor: 666lucky693 » Sun Nov 11, 2007 7:38 pm

i did torch the wood and it uses rope wound up for torsion and i just got done building a mini scorpion bow thing
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Unread postAuthor: jimmy101 » Mon Nov 12, 2007 11:25 am

iknowmy3tables wrote:wow that mini is sweet jimmy I could almost swear that it's a hobby building kit or something that you bought

Thanks.

The wood was just something like 1/2"x3/4" trim wood, nice straight stuff comes planed smooth, from the hardware store. But, everything I used I had laying the garage already.

The wheels are just slices out of a big-ass dowel. The axles are standard dowels (1/4"?). The pins that hold the various axles in place are pieces of toothpicks. The weights are hunks of 3/8" allthread.

I've got a nice compound sliding miter saw so chopping the pieces was simple.

It is glued and finish nailed together (I have a small pneumatic finish nailer).

Slapped a quick coat of wood stain on it.
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