Yeah, roughly the same design I was talking about
My flatmate used to want to build a floating arm trebuchet, which is a bit different from what most people do.
I built a traditional one from lego once, and fired marbles about 10 metres using a counterweight full of AA batteries.
(PenguinOfDeath is Scottish, and most likely angry, Thu 4 Nov 2010, 23:25, 1 reply, 15 years ago)

My brother's aristocratic college friend
made one and used it to fire old pianos across the lawn of his parents' country pile. I have seen photos.
( Monty Boyce, My cheese game is strong, Thu 4 Nov 2010, 23:30, Reply)

Well, that fairly trumps my lego one
Some day if I live in the countryside, I'll get round to making one to fire pumpkins and the such. What could possibly go wrong with that?
(PenguinOfDeath is Scottish, and most likely angry, Thu 4 Nov 2010, 23:34, Reply)