From: Charlie <medievalist gmail com>
To: Elec-Trak <elec-trak cosmos phy tufts edu>
Sent: Tuesday, June 5, 2012 1:28 PM
Subject: (ET) I-5 foot pedal .vs. cruise control
It was mentioned here a couple of weeks ago that the OEM cruise
control doesn't provide the top "field weakening" speeds, and that
seems to be true with my I-5. It actually slows down when I put the
cruise on.
I'm guessing that the motor runs cooler and more efficiently when it's
got the armature field weakened, but I'm remarkably uneducated
concerning electric motor control (and I know you guys aren't) so
please tell me if I'm being stupid.
If I'm in D1 cruise it's a little fast for good mowing speed. D1 on
the foot pedal is WAY too fast. L with cruise is too slow for me, and
L with the foot
pedal all the way down is just right (said
Goldilocks).
But my size eleven gunboats are kind of large for the I-5's foot
pedal, and the spring seems awfully stiff. If I ride in
cruise-control, I won't get the most efficient battery use or the best
speed, but I have trouble maintaining constant pressure on the pedal
for an hour while I mow the open part of the field.
What do you guys think? Has anybody else had difficulty with this, or
am I just dealing with an unusually stiff spring?
--Charlie
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