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The problem with using a foot
throttle with a DCX 300 controller is from the tractor bouncing, or your foot
bouncing even on smooth ground. The original foot controller on the
E20 had a heavy return spring and an adjustable drag built into it. It
also had only eight speeds so it wasn't affected by small
movements.
The pot assembly that is an
option with the Alltrax is very sensitive to small movements. Its spring
is weak and that causes the weight of the foot pedal to move the pot setting
when the tractor bounces. A heavy spring added under the foot pedal will
help some. If you can remove the microswitches from the original
controller and hook a cable from your pot down to the slide inside the old
throttle box, you can adjust the spring and drag to elliminate some of the
bounce.
Mounting a throttle on the
steering column or dash should stop all bounce problems. A foot
throttle and a dash throuttle cruise control worked best for me, since I already
had the foot throttle installed and it bounced. And I thought a
cruise control would be neat anyway.
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