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Dec 10, 2010. 6:16 AMjellypop1
says:
I built it it, looked good. I fired a small lego piece and went about 30cm....
Help?
Help?
Mar 9, 2010. 2:47 AMefabric
says:
I did a trebuchet 10 years ago with lego too, cause I saw a TV show about mens who build one real size. They had a lot of problems until they mount it on wheels. I tried it also with very goog results. Wheels allow the counterweight to fall in a straight line and the arm to be more powerful !
Looks nice. I'd try shortening the throwing arm. The reduction in weight might get you more distance.
I made a Quick-n-Dirty - no tools, no plans, no cutting, no drilling, no lumber, no hardware trebuchet. Many people will have the supplies in their house right now.
It consistently throws 12-15 feet. With a heavier weight it hits the wall at 20' and that's my biggest room. I'll have to find a bigger space to check the range.
It's made of 9 chopsticks, 2 toothpicks, two rubber bands, 3 paper clips, a weight, some string and masking tape.
I published it last night but it doesn't seem to be available yet.
http://www.instructables.com/id/ELS7AFBF5R8MQQU/
The videos are already available at Google. First one is the machine firing close up. Second video is the machine firing, where you can watch the projectiles land about 13 feet away.
http://video.google.com/videoplay?docid=7177348096653267453&pr=goog-sl
http://video.google.com/videoplay?docid=-3765857587744240299&pr=goog-sl
I made a Quick-n-Dirty - no tools, no plans, no cutting, no drilling, no lumber, no hardware trebuchet. Many people will have the supplies in their house right now.
It consistently throws 12-15 feet. With a heavier weight it hits the wall at 20' and that's my biggest room. I'll have to find a bigger space to check the range.
It's made of 9 chopsticks, 2 toothpicks, two rubber bands, 3 paper clips, a weight, some string and masking tape.
I published it last night but it doesn't seem to be available yet.
http://www.instructables.com/id/ELS7AFBF5R8MQQU/
The videos are already available at Google. First one is the machine firing close up. Second video is the machine firing, where you can watch the projectiles land about 13 feet away.
http://video.google.com/videoplay?docid=7177348096653267453&pr=goog-sl
http://video.google.com/videoplay?docid=-3765857587744240299&pr=goog-sl
May 22, 2009. 1:32 AMab1000
says:
In aug. 25, 2007 you notist the lack of the sling. i made one and that one has a sling!! it's shot is pretty good!!
May 24, 2008. 10:36 AMTheMoonMaster
says:
Its cool but its really not a trebuchet. First of all a trebuchet ALWAYS has a sling.No sling,no trebuchet. and also in a real trebuchet the weight is suspended in such a way that it always stays level and never changes angles. good instructable though.
Jan 25, 2009. 5:27 AMAklash, The hunchback
says:
I disagree a trebuchet can have a a weight that doesn't swing and have some sort of scoop not a sling.
Jan 25, 2009. 11:33 AMTheMoonMaster
says:
Alright. I looked it up o wikipedia and it I found this out. I may be slightly off on the part about the counter weight always swinging( although it usually does). But I did read that a trebuchet always has two things. A counterweight and and a sling. Some early trebuchets were powered by traction but now most are counterweight. If you don't believe me than look it up on wikipedia.
Sep 3, 2008. 7:30 PMgeneral-Insano
says:
well for a trebuchet doesn't always need a sling as it is more of a pouch and as for the weights there are many variants but the fixed weight is the best for longer ranges.
Jul 16, 2008. 8:03 PMJskate
says:
Mar 8, 2008. 2:11 PMunclemilfordsays: You need to allow it to roll. Put wheels on it and preferably some track to keep it rolling forward and backwards. Physics will do the rest of the work. I dont understand, this will only help if you have an continous ammo supply
Mar 8, 2008. 2:11 PMunclemilford
says:
You need to allow it to roll. Put wheels on it and preferably some track to keep it rolling forward and backwards. Physics will do the rest of the work.
Nov 9, 2007. 4:32 PMjacksteal4
says:
yeah i reinforced it i fired it about 10 times then it overthrew itself ........again
Nov 9, 2007. 4:58 PMTeacherOfTheWays (author)
says:
Well i think that is because you don't have the side enforced. Because if it is not reinforced on the side then it will throw itself. Sorry bout that =P
Nov 4, 2007. 8:24 AMjacksteal4
says:
it needs a clearer picture of the 2nd step i recommend collared bricks
Nov 4, 2007. 10:20 AMTeacherOfTheWays (author)
says:
sorry, just build something close to it it doesnt have to be perfect, i will try to take another picture if i have the time.
Nov 8, 2007. 3:59 PMjacksteal4
says:
oh no prob well i made my own design but every once and awhile it will overthrow itself and break
Can you finish this off with the string/sling thing? I managed to fling Lego men a few feet in this way, might rebuild it... L
Aug 6, 2007. 8:49 PMLoosewire; SOE Operative
says:
a large ball of limestone coated in burning resin
Aug 8, 2007. 12:09 PMLoosewire; SOE Operative
says:
:P no, i dont think the health and saftey people would like that very much! although they used to fling dead, rotting horse carcases into fortifications during a seige to spread disease and force the people out.
Mar 1, 2007. 9:09 PMTeacherOfTheWays (author)
says:
I dont really have any ideas for that kind of sling.
Feb 28, 2007. 10:42 PMoskay
says:
Nice work!
I've never seen a trebuchet that used a rigid arm instead of a flexible sling. However, my understanding of "trebuchet" is that it means a gravity-powered catapult-- so seems that this one does fit the definition. (Does anyone else have an opinion on that subject?)
Anyway, here is my version of the Lego trebuchet.
I've never seen a trebuchet that used a rigid arm instead of a flexible sling. However, my understanding of "trebuchet" is that it means a gravity-powered catapult-- so seems that this one does fit the definition. (Does anyone else have an opinion on that subject?)
Anyway, here is my version of the Lego trebuchet.
Apr 18, 2007. 2:47 PMKnexagon
says:
There are two types of trebuchets gravity powered and tension powered.(Wikipedia).
Aug 6, 2007. 11:57 AMLoosewire; SOE Operative
says:
gravity powered is more reliable but the arm is more likrly to snap but tension powered is stronger but is more likely to self destruct and kill the winders in side
Mar 16, 2007. 3:35 PMbumpus
says:
when i made a trebuchet instead of a counter weight i used a rubber band and i was able to fling lego bricks like 16 feet away and atleast 6 feet high
Feb 28, 2007. 9:41 PMVertigo666
says:
move the weight down further from the pivot point, around a 2 to 1 ratio- the longer part of the arm is twice as long as the shorter part. this should add some power+range. good design! i can never make the legs strong enough.
Feb 28, 2007. 9:07 PMAeshir
says:
YAY! We love our lego! I'm getting kinda sick of K'NEX. + Rating!
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