On Wed, 18 Feb 2004 12:20:51 +0000, T i m wrote:

I think the idea is with these electronic speed controllers you
get nearly the same 'torque' as you would at full speed. What you
don't get of course is the intertia gained from such revs?

What you don't get is the cooling from the motor fan.
With low-speed high-torque applications, like a polishing or brushing
with an angle grinder, the motor will tend to run hot if it's run at low
speeds. Care, cooling pauses, and maybe running it at full speed and no
load ever so often prevent motor damage.


Thomas Prufer