"Russell Kent" wrote in message ...
Andy Asberry wrote:
Maybe you can answer a question I've had for sometime. What is the
relative efficiency of hydraulics, belts, gears and chain drive?
You've given the hydraulic answer. Care to take a stab at the others,
please?

Andy,
One thing to keep in mind with every power transmission apparatus is:
Every watt of power that goes into it comes out either as power at the
working end, or heat somewhere along the way. So the more heat the
apparatus sheds (as a percentage of input power), the less efficient it is.


Tis true of all devices which is why all electrical resistance heaters
have the same efficiency--the 'waste' heat is indistinguishible from
the 'product' heat.

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FF