On May 1, 2024, at 9:49 PM, David Roden <etpost@drmm.net> wrote:

On 1 May 2024 at 19:37, Christopher Zach via Elec-trak wrote:

I thought about this last night, and true: The E12 motor (at least the
one with a field) *can* be run with field weakening, but it's not
supported by the simple contactor controller.

The E12 with the permanent magnet motor of course can't do field
weakening unless you remove magnets (so not advised :-)

Shouldn't be too tough to add a FW "turbo" button.

You can also get the effect of FW without a FW controller by just raising
the armatujre voltage.   

Build yourself a battery box to hang on the back, and stuff it with 2 more
batteries. Now you have 48 volts of go-faster.  

I'm pretty confident that the drive motor would be fine at 48 volts.  Mower
and other attachment motors, not so sure.  If you wanted to be safe, you
could tap the battery at 36 volts for them.  That would imbalance the
battery worse than it already is, so you'd want to charge your extra 12
volts separately.   

Just a thought.


David Roden - Akron, Ohio, USA

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