Roll on the 20th June

[The Eskimo Quinn]

As for legendre  for over 12 thousand years Science once explored new ideas, you are the perfect example of the death of science to simply expanding the use of known products and methods.

If i lived on a farm and my gate was 100 metres from the house, how would you open the gate for a visitor when it's raing without walking or drivng down to it? without modern remote controls or any cables that go up to the house, and have the gate close itself without any springs or cantelever hinge?

I got this from the legends of Merlin and how great walls could be opened at cave entrances and would close afterwards, a littlke like the ali baba and the forty thieves story. Whilst historians recognise that many stories are simply variations of the same story, all agree that at some point one or more of the stories is usually founded in fact. So to that end my life has centred around working out the physics required to perform what seemed like feats of magic.

So knowing you have no modern materials, and that there are no connecting cables, i now ask you to open the gate and have it self close, or the entrance to ali babas cave if you will, and show us all what you really do know about physics and you ability to think outside the square. (anyone can throw in a device) remember 100 meters away and close afterwards.

[CLaNZeR]

So knowing you have no modern materials, and that there are no connecting cables, i now ask you to open the gate and have it self close, or the entrance to ali babas cave if you will, and show us all what you really do know about physics and you ability to think outside the square. (anyone can throw in a device) remember 100 meters away and close afterwards.

Easy.

Mount gate on a slant, so it shuts by itself after being opened.

Make a water trench 100 meters long.

Attach long arm to gate with paddle on the end that is in water trench.
Place pivot along arm so least force is needed to move heavy gate.

Paddle will run parallel to the trench as it moves along the small arc.

From house, release water so it flows down trench, hits paddle and opens gate.
When guest is in, release water flow and allow gate to shut

[CLaNZeR]

Now that is really impressive!!!! Intentionally or otherwise it is in fact once he gets it running the perfect demonstration wheel because you can see everything withou concern for hidden items as the sceptic will be expecting when they see the wheels running.

well done.

Thanks archer

I make everything out of Polycarbonate where I can, intentionally for showing that there is not hidden tricks.

It is pretty strong stuff and easier to CNC 

Bit repetative when you have to make 8 of everything though GROAN.....

[The Eskimo Quinn]

Very good use of physics for the gate, but it has to shut itself, no second action required, no slanted gated(same as slanted or centalever hinge) Still shows how simple it is though.

But think more along the lines of ali baba and you have say 200 kilos of weight to move, but you are on the right track with the water. easily hidden underground or even existing in some cases.

Put yourself in the magicians shoes, a lever of any sort near a rock or bush can be kicked, and provided you know the timing you can simply call out Open Sesame or Close Sesame.

Just get the gate to close itself after you walk through, a paddle wheel would need too much water to move hundreds of kilos.

[ramset]

Can I train Lassy to open and close the gate  Chet