Schottkey flyback diode for motor advice please.

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I will soon wire up a 36 Volt 80 Amp permanent magnet DC motor to be
run at 48 VDC. It will be used in a homebuilt trike.


I am looking for a flyback diode that will take the full current during

slowdown when the power is turned off by a contactor (no PWM).


I would appreciate knowing whether to use a single diode, series
diodes, a Schottky, a series resistor, etc.


What is the most cost effective solution?


Boyntonstu