Half a croissant, on a plate, with a sign in front of it saying '50c'
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800hp clock

A demonstration of efficiency
  (+6, -3)
(+6, -3)
  [vote for,
against]

A wristwatch is one of the most efficient mechanical marvels that I know.

Let's change that and build a large and powerful engine, revving at incredible speed, preferably with twin turbos; variable valve control; air injection and twin overhead cam, which is geared down to drive a set of hands.

Simply by filling up the tank, several times per day, it keeps reasonably good time.

Beside it is a cheap Casio digital watch as a reference.

Ling, May 25 2008

Steam Clock http://www.youtube....watch?v=75sl0FVTOFA
[Amos Kito, May 25 2008]

Most powerful diesel engine http://people.bath.ac.uk/ccsshb/12cyl/
108,920 HP! [Voice, May 26 2008]

[link]






       I am assuming that the clock is designed to be read through a telescope from Mars, just so the little green men know when we are asleep? It makes it easier to attack when no-one is awake.   

       + for sheer crazy factor. But only if the said 800hp engine is a modern V8 with only a resonator either side for an exhaust.
BLSTIC, May 25 2008
  

       I think I'd prefer a hydroelectric clepsydra.
MaxwellBuchanan, May 25 2008
  

       But what kind of E.T.s could this clock run?
MikeD, May 25 2008
  

       //I think I'd prefer a hydroelectric clepsydra//
It'd take a course of strong antibiotics to clear it up,though. Or yoghurt.
AbsintheWithoutLeave, May 25 2008
  

       How about a very-much geared down gas turbine ?
8th of 7, May 25 2008
  

       I suggest you move this to category: clock: wristwatch: combination.
zeno, May 25 2008
  

       800hp isn't enough. Add a dozen transmissions and a precise timing device to a ship's diesel engine...
Voice, May 26 2008
  

       Nice. It stands to reason, that, for a reasonably sized clock face, almost all of the power (800BHP, some 600 kilowatts or so) will be consumed by friction in the gearbox. That's a lot. This thing'll be 90% oil cooler, 8% gearbox, and 2% engine.
Custardguts, Jun 02 2008
  
      
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