LEGO CUUSOO

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    Trebuchet revive the ancient times

    created by Rabbitdesign on 2013.12.23

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    I have been more or less intrigued by medieval instruments. Especially those once from DaVinci. A few months ago a was watching the movie Timeline which triggered me to build a trebuchet. In general I had no clue how such an equipment works. After some investigations and several rounds of try-outs I managed to get the thing working.

    This versions size is:
    Height: 43 cm
    Length: 52 cm
    Width: 17 cm
    parts: 1266

    I used some real size wooden building instructions and sized that down to this one. As you can see I don't have enough lego to build it in one and the same color.
    At the end of this article I submitted a MLcad drawing image in one color.

    For me the moment to publish it here as a set suggestion. It really works like the once from back then.

    As thread I suggest to use the new version from the new crane set 42009. Besides that as sling pouch you can use the thread net 10x10.

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    Next was the topic how to get the sling back to position? After some more invastigation I added the winch as well. With the moving catrol you keep momentum add maximum as possible which makes it easy to tow the sling back in position.

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    As counter weight I started with 3 battery holders but that wasn't enough to do the work. The big marble just crossed 2.5 meters max. Finally a came up with the basked shown in the picture. This basket I filled with around 40 AA batteries. This was heavy enough for my satisfaction. The construction can handle more however.

    Also the turning point of the sling was very important. After a few tries this was finally the best result with the given weight.

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    Now what to throw away?? Initially I used marbles. I was lucky I tried it first outside! With the batteries in the counter weight basket the marble flew more than 4 meters!

    After some more modifications and improvements my son got a lego City set as present with a Lego boulder rock. This one you have to make heavier with a small marble and that one flies even more than 7 meters!

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    To provide a better impression I created a digital version with MLcad just in brown color to mimic the wooden construction. This one also contains wheels.

    Enjoy
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