Please tell us more details of your conversion: make, model, year, and how
you are driving it.
Bill C. via EV wrote:
It's a 2002 Ford Focus with and ADC 9 inch motor and Curtis controller,
driven mostly on flat roads. It's wired to open the main contactor when the
accelerator is released, so I'm not too worried about shutting it off if the
controller fails. I'm concerned about shutting off the motor if the
accelerator is pressed and the clutch is in or the transmission is in
neutral. I know not to do that, but it will be driven by a state inspection
technician and possibly other people not familiar with EV conversions.
Hi Bill,
Welcome to the EVDL!
Being a 2002, your Escort may already has switches on the clutch, and
transmission to detect neutral. They are there so you can't crank the
engine with the car in gear and the clutch engaged. So, you can simply
rewire these switches to limit motor RPM via the potbox resistance.
Note: These switches are in the 12v system. The Curtis potbox is in the
high voltage system. So, you need a relay to provide isolation. Use the
switches to control the coil of a 12v relay, and use the relay's
contacts to switch a fixed resistor in place of the throttle pot. Pick
this resistor so the motor still runs, but at low RPM.
--
Knowledge is better than belief. Belief is when someone else does
your thinking. -- anonymous
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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