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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Sun, 18 May 2003 14:43:05 GMT
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Viewed:
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2449 times
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As I mentioned I wanted to do in my other post, I've changed to a braided
sling pocket and it made a big difference, both in ease of setup and
distance. It now throws about 6 feet. Time to see what sling length and
end hook gives the best performance before I change how the weight on the
arm is distributed.
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 has 2 Replies:
 | | Re: Trebuchets
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| (...) That's where my trebuchet wouldn't work, that darned sling! The shape of the trebuchet was right and I used two weight bricks for ballast, but it was the sling that stumped me! Any pics of the new sling? Nathan Lord Of The LEGO (23 years ago, 19-May-03, to lugnet.castle)
| | | Re: Trebuchets
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| I've now also modified my trebuchet to use two weighted bricks in the counter-weight. Here it is cocked, loaded, and ready to fire: (URL) It now throws in the 12-14 foot range, which is a respectable 175-200 yards in mini-fig scale. Brian (...) (23 years ago, 22-May-03, to lugnet.castle)
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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! :) (...) (23 years ago, 17-May-03, to lugnet.castle)
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