Trebuchet - medival siege engine

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Boneshaker
Posts: 69
Joined: Sat Feb 20, 2016 2:20 pm
Location: Emden, Germany

Trebuchet - medival siege engine

Post by Boneshaker »

Trebuchet - medieval siege engine

About 10 years ago I saw a documentation about medieval siege engines in german TV. In this documentation a team of carpenters rebuilt 2 trebuchets in real size.

The original english version of the documentation is on youtube:
https://www.youtube.com/watch?v=qakVK4VVQWY

Model at
https://youtu.be/qakVK4VVQWY?t=15m17s

Hits with the rebuilt trebuchets:
https://youtu.be/qakVK4VVQWY?t=40m19s
https://youtu.be/qakVK4VVQWY?t=49m5s

Wiki page about trebuchet:
https://en.wikipedia.org/wiki/Trebuchet
https://en.wikipedia.org/wiki/Warwolf

Since I saw this, I wanted to built a model of a trebuchet. So last year I built one of some scrap wood. Counterweight is still missing, but it works, tested with stones taped to the arm.
Steinschleuder.jpg
Steinschleuder.jpg (26.69 KiB) Viewed 4005 times
A drawing I made in Libre CAD:
Steinschleuder Zeichnung.jpg
Steinschleuder Zeichnung.jpg (23.79 KiB) Viewed 4005 times
This model is not nice enough to place it in my living room, so I hopefully find time to built a nicer one this year. Constructing was done in freecad 0.15, cutting the pillars at angles I used the workfeature macro. Project tree and constructing is a little bit messy cause it is one of my first freecad work.
As there are no useful plans for trebuchet-models on the internet, I share this here. Maybe it would help someone else.
Steinschleuder neu.jpg
Steinschleuder neu.jpg (23.6 KiB) Viewed 4005 times
Steinschleuder V04.FCStd
(267.74 KiB) Downloaded 204 times
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r-frank
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Location: Möckmühl, Germany
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Re: Trebuchet - medival siege engine

Post by r-frank »

Hello.

Impressive project. Thanks for sharing ...
Boneshaker wrote:As there are no useful plans for trebuchet-models on the internet ...
Well, I fouund this Trebuchet Project Book from Solidworks quite interesting ...

Keep up the good work.

Roland
Deutsche FreeCAD Tutorials auf Youtube
My GrabCAD FreeCAD-Projects
FreeCAD lessons for beginners in english

Native german speaker - so apologies for my english, no offense intended :)
mario52
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Posts: 4673
Joined: Wed May 16, 2012 2:13 pm

Re: Trebuchet - medival siege engine

Post by mario52 »

hi
beautiful
paste this litle code in your Pyhon console

Code: Select all

for i in range(230,360+120,3):
    App.getDocument("Steinschleuder_V04").Cut001.Placement=App.Placement(App.Vector(150,103,40.3495), App.Rotation(0,i,0), App.Vector(0,0,180))
    Gui.updateGui()                                        # rafraichi l'ecran
    print i
mario
Maybe you need a special feature, go into Macros_recipes and Code_snippets, Topological_data_scripting.
My macros on Gist.github here complete macros Wiki and forum.
jmaustpc
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Posts: 11207
Joined: Tue Jul 26, 2011 6:28 am
Location: Australia

Re: Trebuchet - medival siege engine

Post by jmaustpc »

I watched the video again last night, amazing machines.
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