Re: EV Grin Returns

[Rod.Hower@ametek.com]

The problem with the Curtis was not just efficiency (which I can only guess
is only 2% or so better on the DCP).
The lower current limit setting on the Curtis probably kept you at a very
inefficient point on the motor curve.
Since the DCP has a higher current limit, you can get past this inefficient
point and operate at a much more efficient point on the motor curve.
These results will vary considerably on different vehicle's.  You may also
want to re-evaluate your shift points if  you have a manual transmission.

Rod
W8RNH



And none to late!

With some nice support from Cloud Racing & quick action by Damon hisself, I
finally got the new DCP 600 Raptor installed over the weekend and I'm glad
to say we're back in action!

I knew I'd been missing the EV for my commute, but the minute I left the
driveway Monday morning, there it was,.....in fact, I was grinnin' so hard,
I could hardly give out a yell.

Not necessarily a *rap* on the (former/lesser) 1231C controller, but here's
what I've noticed so far:

           - (Obviously) no more whine from under the hood OR (EMI/RFI)
squealing from
the AM radio.
             (gee, no more *lost* ball scores during acceleration).
           - Able to climb those steep hills without (overtemp) cutback
(and/or
whinin').
           - And here's the biggest surprise: able to cruise at ~80 amps
(45-50 mph),
which previously            was 100-110 amps with the Curtis, AND the
battery pack
is now reaching full charge           sooner than before (and this with a
pack
that's been sitting unused for 2 months, plus              it's still only
in the
upper 30's, mid 40's: Can a DCP really be that much more efficient
   than a
1231C?)

I'm still working on the tach sensor/over-rev limit install, but
man-oh-man,
it sure feels good to be back in the EV-saddle again, YEEHAAHHH!!

OK, so I'm a little slow in catching up with the newer electronics, but
humor me folks, I'm old!

Regards,
Jim Waite

'82 BMW 3 Series