....
FWIW, the Alltrax ET controller, which I'm pretty sure was really
explicitly
designed for the E15 motor (though it may work OK with other ET
motors),
does have field weakening. Last I heard FW was not enabled by
default, but
could be turned on in the software (the "turbo" button). Its
control is
more sophisticated than the original GE design (duh), but the
intent of its
FW is about the same - to provide higher top speed under light
load, but to
maintain torque with heavy loads.
For light load applications I don't think there'd be any harm in
running at
48 volts. I probably wouldn't try it if my machine were used for for
plowing, dozing, or towing. I don't really see much benefit
though. Flat-
out in D2 seems plenty fast to me. Especially with the
entertaining and
invigorating brakes GE fitted, how much faster do you really want
to go?
David Roden - Akron, Ohio, USA
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