Author Topic: Trebuchet  (Read 5783 times)

Offline boxtriker

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Trebuchet
« on: June 19, 2014, 12:34:15 PM »
Trebuchet
Some of you might think i have one of the best job's you can get. i started as a school Technician in Technology 7 months back was told i would get to make all sort's of one off weird stuff for the kid's an be the made to play with the lathe's mill's an all the wood working shop too. well this is the latest project a Trebuchet the full size beast stands 25 feet to the spindle with 7 tons on the arm throwing a 2 hundred weight ball. it's little brother hear is 5 foot to the spindle. they only want to fire tennis ball's with the year 9 kid's with it but after that i can give it to the big kid's to have a play so how much weight do i put in it for the big kid's an what's it going to Throw in weight

Offline Eugene

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Re: Trebuchet
« Reply #1 on: June 19, 2014, 04:08:23 PM »
Perhaps you could scale it down from the one shown here.



Eug

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Re: Trebuchet
« Reply #2 on: June 19, 2014, 04:22:23 PM »
If you're not one of those sad souls intimidated by a bit of math, spend some time here...

http://www.real-world-physics-problems.com/trebuchet-physics.html
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Offline Bluechip

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Re: Trebuchet
« Reply #3 on: June 19, 2014, 06:58:57 PM »
There was a Ch4 program ages ago with several being built.


Looks like this is it.

     


DBC
« Last Edit: June 20, 2014, 09:16:36 PM by dsquire »
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Offline boxtriker

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Re: Trebuchet
« Reply #4 on: June 20, 2014, 12:35:17 AM »
Yes i'm one of them sad souls never could do the math i just go into brain lock but thanks for the link

http://www.real-world-physics-problems.com/trebuchet-physics.html

will pass it over to the 6 fourm class an get them to work it out......... my on the fly workings is telling me six or seven hundredweight in the bucket 5 to 1 arm with a ball weight around 2-3 pound is about max so a grapefruit could be top of the list for ammo


Offline Arbalist

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Re: Trebuchet
« Reply #5 on: June 20, 2014, 04:20:48 AM »
There was a farmer on TV who built one for fun. Great shot of it throwing a Piano!

Offline Bluechip

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Re: Trebuchet
« Reply #6 on: June 20, 2014, 05:54:04 AM »
There was a farmer on TV who built one for fun. Great shot of it throwing a Piano!

Part of that Ch4 link I gave AFAIK.

Dave
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Offline Bigbadbugga

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Re: Trebuchet
« Reply #7 on: August 26, 2014, 08:06:51 AM »

Didn't top gear have one that threw caravans?

Or did I just dream that one :)
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Offline awemawson

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Re: Trebuchet
« Reply #8 on: August 26, 2014, 01:05:54 PM »
The one I made at school (Latin lesson competition!) would throw a cricket ball the full length of the parade ground and drop it neatly into the open air swimming pool quite repeatedly  :ddb:
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Re: Trebuchet
« Reply #9 on: August 26, 2014, 01:12:58 PM »
The repeatability of the trebuchet was one of the features that made it such a feared weapon.  It could repeatably hit the same spot on a castle wall and that battering action would soon breach the wall.
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Offline Eugene

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Re: Trebuchet
« Reply #10 on: August 26, 2014, 03:45:35 PM »
The trebuchet in the link I posted is in deepest rural Shropshire near Acton Round.

I attended a gun dog trial there about four years ago and saw it in the flesh; a bit of a surreal experience to sit by it with a flask of coffee and a sarnie!

Eug


Offline rockknocker

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Re: Trebuchet
« Reply #11 on: August 26, 2014, 04:07:34 PM »
Down the road from where I live is a farm that sells pumpkins during the fall months. They never sell all of them though, there's always a large pile of unwanted pumpkins after Halloween. They would make ideal ammunition for a trebuchet only a little larger than the one in Triker's first post!

This would definitely be a step up from the potato cannon I currently play with...  :thumbup:
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Offline tom osselton

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Re: Trebuchet
« Reply #12 on: August 26, 2014, 04:12:01 PM »
Pumpkins are good! I always watch the pumpkin shoot on the tv its amazing just how much work and time to create these machines!

Offline AussieJimG

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Re: Trebuchet
« Reply #13 on: August 27, 2014, 04:00:48 AM »
There was one at Warwick Castle when I was there a couple of years ago.

Jim

Offline tom osselton

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Re: Trebuchet
« Reply #14 on: August 27, 2014, 04:30:50 PM »
Back in the 60's when i was a kid there was a article in the paper about a guy that made a catapult out of leafsprings to fire dumplings,  he used it to fire at low flying aircraft from the airport the caption read "dumplings that go splat when they hit!"