At 06:29 PM 15/10/2009, you wrote:
>Among motor types, which give the best power ( energy per unit of
>time )  to weight ratio ?
>I am not going to consider reliability as a factor.
>I am not including auxiliary items such as fuel tanks, air lines,
>cabling, etc.
>
>Air motor
>Electric Motor
>        Brushless
>        Stepper
>        Brush
>        AC Synchronous
>        Induction
>Hydraulic Motor
>Rubber Band Motor :)
>Mystery Motor

Probably hydraulic motors-- they are very small for their HP output.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com



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