imhomer Posted March 30, 2006 Share Posted March 30, 2006 OK, I am in the Boy Scouts and in my council we are having what we call the siege. Basically the siege is a competition between troops (same as pack in cub scouts) to design and build a siege engine (catapult, trebuchet, something else???) that can throw sponges. We're not a huge troop so we are kind of running low on ideas. That's where you come in. I would like you to submit a description and drawing of potential siege engine drawings or links to websites with designs. There are only a few rules and here they are: *All siege engines must be made of wood with the exception of ropes, cloth for slings, and baskets. *All siege engines must be powered by people only (no stored energy like rubber bands, bungee chords, etc.) *No one is allowed over 6 feet in the air Please help and no flaming. Link to comment Share on other sites More sharing options...
MyPurpleCrayon Posted March 30, 2006 Share Posted March 30, 2006 Ahh one of my architecture classes at school build catapults. They are really cool, I have no idea how though. Good luck. :P Ghost: I am prejudice towards ignorance, so that would explain why I appear to be so. Link to comment Share on other sites More sharing options...
WutangFlu Posted March 30, 2006 Share Posted March 30, 2006 Google: Trebuche pronounced treb-you-shay dunno how to spell :P classic cat.. go for it.. shounlt be to hard.. Link to comment Share on other sites More sharing options...
imhomer Posted March 30, 2006 Author Share Posted March 30, 2006 I've already tried that, the hard part is finding one that uses people to power it, not stored energy like rocks or springs. Link to comment Share on other sites More sharing options...
runesmithie Posted March 30, 2006 Share Posted March 30, 2006 I've already tried that, the hard part is finding one that uses people to power it, not stored energy like rocks or springs. If I remember what a trebuchet was, then shouldnt you be able to swap out the counterweight with a rope and have the entire troop yank on it? I just posted something! ^_^ to the terrorist...er... kirbybeam. Link to comment Share on other sites More sharing options...
imhomer Posted March 30, 2006 Author Share Posted March 30, 2006 I've thought of that and found something similar on the internet called a traction trebuchet. That's my fallback plan. I was hoping I could get some new out of the box thinking. Link to comment Share on other sites More sharing options...
runesmithie Posted March 30, 2006 Share Posted March 30, 2006 I've thought of that and found something similar on the internet called a traction trebuchet. That's my fallback plan. I was hoping I could get some new out of the box thinking. Could have a kid under 6 foot dress up like a catapult and chuck the sponge? I just posted something! ^_^ to the terrorist...er... kirbybeam. Link to comment Share on other sites More sharing options...
cardsfan Posted March 31, 2006 Share Posted March 31, 2006 i think you're looking for the wrong thing on google. try looking for, isntead of the trebuchete, the swinging arm...thing...thrower...yea and do a search for that and man-powered or something like that. im sure people have come up with man-powered sling esque things :wink: if this posts makes no sense to you, you are not alone, it makes no sense to me either 8) R.I.P. Shiva Link to comment Share on other sites More sharing options...
godsfearme Posted March 31, 2006 Share Posted March 31, 2006 Hope you find the design. On my last campout we got a bag of random junk ie spoon ballon, marble, rubber band and other stuff and had to make something. Six of the seven troops that did it made a cauplt I will shoot down any one with my bitting wit, and sarcasm!What POSSIBLE reason would someone have to make a fake like that?Does he profit from faking a picture like that? Does it help him at all?Jesus Christ, stop being so suspicious. This is Tip.it for God's sake, not RuneHQ. -_- Link to comment Share on other sites More sharing options...
bjbj1991 Posted March 31, 2006 Share Posted March 31, 2006 *All siege engines must be powered by people only (no stored energy like rubber bands, bungee chords, etc.) This would be a little hard because you will be limmeted to the methods of energy release. Humans would be the only option because of this (in reality humans operate on energy stored in food so we would have excluded ourselves and all other methods but who cares). If you have a strong troop you may be able to design a pully system to increase your speed but that may be a little advanced. Link to comment Share on other sites More sharing options...
WutangFlu Posted March 31, 2006 Share Posted March 31, 2006 Yeah.. big rope + a pulley system.... or... "launching a spoon off of a table" think about that for a concept. Link to comment Share on other sites More sharing options...
imhomer Posted March 31, 2006 Author Share Posted March 31, 2006 bump Link to comment Share on other sites More sharing options...
____ Posted March 31, 2006 Share Posted March 31, 2006 hm, you are essentially out of all viable options if you can't use stored energy. Although, you can still make a human-powered trebuchet, as noted: [ source ] A proper trebuchet (with stored power) even one a meer few foot high can launch things well over 100m 8) Link to comment Share on other sites More sharing options...
Anesthesia Posted March 31, 2006 Share Posted March 31, 2006 I made one a few years ago for a technology class. You don't want a trebuchet, you want a mangonel - the difference being that a trebuchet is powered by weight, whereas a mangonel is powered by the tension in twisted ropes. Trebuchets are more useful for firing heavy weights, I think a mangonel would be more suited to sponges. Some people are changed by being a moderator. I wouldn't be. Link to comment Share on other sites More sharing options...
runesmithie Posted March 31, 2006 Share Posted March 31, 2006 I made one a few years ago for a technology class. You don't want a trebuchet, you want a mangonel - the difference being that a trebuchet is powered by weight, whereas a mangonel is powered by the tension in twisted ropes. Trebuchets are more useful for firing heavy weights, I think a mangonel would be more suited to sponges. Wouldn't the tension be a form of stored energy though? I just posted something! ^_^ to the terrorist...er... kirbybeam. Link to comment Share on other sites More sharing options...
____ Posted March 31, 2006 Share Posted March 31, 2006 Yes it is. Link to comment Share on other sites More sharing options...
Anesthesia Posted March 31, 2006 Share Posted March 31, 2006 What are you talking about runesmithie? Yes of course it is, but I don't see why you're saying that. Some people are changed by being a moderator. I wouldn't be. Link to comment Share on other sites More sharing options...
runesmithie Posted March 31, 2006 Share Posted March 31, 2006 What are you talking about runesmithie? Yes of course it is, but I don't see why you're saying that. *All siege engines must be powered by people only (no stored energy like rubber bands, bungee chords, etc.) heh :P I just posted something! ^_^ to the terrorist...er... kirbybeam. Link to comment Share on other sites More sharing options...
____ Posted March 31, 2006 Share Posted March 31, 2006 *All siege engines must be made of wood with the exception of ropes, cloth for slings, and baskets. *All siege engines must be powered by people only (no stored energy like rubber bands, bungee chords, etc.) *No one is allowed over 6 feet in the air Link to comment Share on other sites More sharing options...
Anesthesia Posted March 31, 2006 Share Posted March 31, 2006 Oh right yes. In that case then a trebuchet is out of the question too because the weighted arm is stored energy as well. In fact I honestly can't think of a siege engine that doesn't use stored energy... that was their entire purpose. To be pedantic: this can't happen at all because even if it was someone standing their throwing the projectiles it is stored chemical energy that they are using. Some people are changed by being a moderator. I wouldn't be. Link to comment Share on other sites More sharing options...
imhomer Posted March 31, 2006 Author Share Posted March 31, 2006 Yes, we're all aware that the body uses stored chemical energy. The point of the rule is that only people can power the engine directly. My best Idea is to somehow use gear ratios or a pulley system to gain mechanical advantage. Link to comment Share on other sites More sharing options...
Necromagus Posted March 31, 2006 Share Posted March 31, 2006 I remember building a device that sort of fits the terms you've described. It's a bit hard to replicate with the limits in available material though. Basically what we did was horizontally mount the arm with the basket on one end, with a small counterweight on the other to balance it. Then we had a system of gears and a winch to start rotating it. Once we had it up to a decent speed we'd block the arm by rotating a beam up in its path, and the object in the basket would be flung out by the momentum. (Oh, and for an advantage over the other team, make sure your sponges are wet in stead of dry.) My Tip.It Times Articles (10 and counting) || The Varrock Library Author Index projectDo you dare to dream? - Part 19 added. || The Hospital (WIP) - New story!Necromagus looks like a viking ... with glasses. Link to comment Share on other sites More sharing options...
slapstick Posted March 31, 2006 Share Posted March 31, 2006 water ballons make a nice alternate aswell. Link to comment Share on other sites More sharing options...
speedofsound Posted April 1, 2006 Share Posted April 1, 2006 heres my idea You can't ever find a place that's nice and peaceful, because there isn't any. You may think there is, but once you get there, when you're not looking, somebody'll sneak up and write "(bleep) you" right under your nose. Try it sometime. I think, even, if I ever die, and they stick me in a cemetery, and I have a tombstone and all, it'll say "Holden Caulfield" on it, and then what year I was born and what year I died, and then right under that it'll say "(bleep) you." Link to comment Share on other sites More sharing options...
WutangFlu Posted April 1, 2006 Share Posted April 1, 2006 me uber design.... yo.... :) im proud. Link to comment Share on other sites More sharing options...
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