On Mon, 11 Sep 2006 08:41:52 +0200, "Thomas de Groot"
<t.d### [at] internlnet> wrote:

>
>"Tim Attwood" <tim### [at] comcastnet> schreef in bericht 
>news:45046439$1@news.povray.org...
>>> Actually, while modeling it, it struck me that it was not obvious at all
>>> how this contruction could produce any sort of real catapult-movement.
>> The ropes around the pivot act as a torsional spring. The handles at
>> the back are to force the catch off the hook.
>>
>Yes, and for those who have seen Scrapheap on TV, know that it is not so 
>obvious to build a working one :-)
>
>Thomas 
>
You are right and I cannot imagine that throwing arm surviving the
sudden stop when it hits the massive top beam .

Not a practical design at all

John

Post a reply to this message