Tim tests his lungs...

Tim welcomes an old friend Clive Panto to the Grand Illusions tv studio, and Clive brings with him an amazing contraption. Sometimes called a blow back pipe, this weird device is made largely from brass and was apparently used by miners in Wales to check out how well their lungs were working.

If you blow hard enough into the gadget, which looks a bit like a metal pipe, then this causes the little windmill to spin. Clive manages to get it spinning well enough. But then he passes it across to Tim to have a go, and things do not go entirely according to plan...

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• Category

  Science & Technology

[fulsame1]

Nopes, the trick is in the windup. "you must blow very very hard". the trick is you blow very gently. there's a valve in the stem that opens when enough pressure is applied that redirects the airflow through the powder reservoir.

[Epicman9999]

I got here from Imgur

[Ryer Appeldoorn]

Look at Clives little grin at 0:35. He knows what is coming. He friggin' loves it

[ryanT2792]

Sucking definitely doesn't work! My mate has one of these and he brings it to the pub on occasions and everyone has a go, If you suck you end up with a mouth full of talc. If this one is the same as my mates then I think the trick is just to blow really hard but everyone sees what happens and pussys out

[1234Inuasha]

the first guy was sucking the device that triggered the reverse spring valve creating the wheel to spin. the second guy blow the device that triggered a spring valve the switched to a different port that would blow particles into his face. ;)

[yseGhost]

this first one sucks on it the second one blows on it :)

[Ardachoke Onenwalker]

Me too



[gaivskakashi]

watch from 0:41 the real blow

[Alex Levy]

Me too, friend. Me too..

[Kyi Min Sint Maung]

Cocaine is one hell of a drug.

[Rocky Inac]

Good sport ahah