"Vincent Le Chevalier" <gal### [at] libertyALLsurfSPAMfr> wrote in 
message news:47e3b123$1@news.povray.org...

>>   Laugh if you like, I don't mind, but the solution is clockwork cars.
>>
>>    The factory produces a clockwork 'engine' with two pre-wound springs 
>> in the car. You go buy it, and drive it off the forecourt. As you drive 
>> it, only one spring drives the car, and when that spring winds down 
>> enough not to work effectively, the other one kicks in to continue the 
>> journey. Here's the good bit: As the second spring is driving you 
>> forward, it re-winds the first spring, so this would work in such a way 
>> that they would forever be swapping over and eliminating any hands on 
>> winding up.
>>
>
> But this cannot work... When spring 1 is wound down completely, you have 
> only the energy of one fully wound up spring left. If you use it to 
> totally wind up spring 1 again, then you cannot use it to move the car. So 
> sooner or later, you'll have to wind the car up again, to re-inject energy 
> that has been lost while moving. The fact that there is one or two or n 
> springs does not change anything...

  Well, ok, but what if the back springs were just rewound by the drive of 
forward motion (and not from the front two springs) anyway?

>
> So we're back to waiting for the Apocalypse again :-)

       And 'waiting' is the key word there.  ;)

       ~Steve~



>
> -- 
> Vincent

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