Subject:
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Re: Trebuchets
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Newsgroups:
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lugnet.castle
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Date:
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Sat, 17 May 2003 15:30:02 GMT
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Viewed:
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568 times
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I've only gotten it to throw a few feet with the soccer ball. The
mini-figs can spit farther! An area that needs serious attention is the
sling pocket. The piece of plastic that I'm using now is too slippery and a
soccer ball has trouble staying in place. My original idea was to braid the
sling pocket and the current sling was just an interim measure. If I use a
1x1 brick instead of a soccer ball it goes about twice as far.
I also need to spend time experimenting with the length of the sling and
the hook on the end of the arm. Right now the hook is a 1x1 cone, but I'd
also like to try a 1x1 cylinder and a couple other options.
An alternative arm constructions to reduce the ratio of weight on the
long end of it might be worthwhile, too.
Brian
In lugnet.castle, Josh Wedin writes:
> Hey Brian,
>
> Very nice trebuchet! I saw that show too and loved it. You can buy copies
> of it off of their website. Anyway, your rendition is very cool. I am
> thinking of building one too after all this talk about them. But now I will
> be a copycat! :) How far does it throw that soccer ball? I built a wooden
> trebuchet out of 2x4s right after I watched that show (and read about in the
> Smithsonian). But I couldn't get the weights right. Oh well, I will have
> to try again this summer.
>
> Josh
>
> In lugnet.castle, Brian H. Nielsen writes:
> > In lugnet.castle, Benjamin Ellermann writes:
> > > In the US we have a public television program called Nova.
> > > They had a cool show on trebuchets. Check out details here:
> > >
> > > http://www.pbs.org/wgbh/nova/lostempires/trebuchet/builds.html
> >
> >
> > I saw that show and have just completed a trebuchet based on one of the
> > designs in it. Here are some images of it:
> >
> > Winching down the arm:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=403138
> >
> > Setting the release trigger:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=403139
> >
> > Loading the sling:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=403141
> >
> > Ready to fire:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?i=403143
> >
> >
> > The folder after moderation:
> > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=43644
> >
> >
> > A weighted brick is used as the counter-weight, but I think I may rebuild
> > the trebuchet a little larger and use 2 weighted bricks side-by-side.
> >
> > I like my simple release trigger mechanism and how I kept the beams of
> > the A-frames inline rather than overlapped.
> >
> > Brian
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Message is in Reply To:
 | | Re: Trebuchets
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| Hey Brian, Very nice trebuchet! I saw that show too and loved it. You can buy copies of it off of their website. Anyway, your rendition is very cool. I am thinking of building one too after all this talk about them. But now I will be a copycat! :) (...) (21 years ago, 17-May-03, to lugnet.castle)
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