driver voltage: 36V vs. 24V

[o_lampe]

Hi gents,
I have an external driver board at my Duet2 expansion port and it can be driven with 35V (*). I also have TMC2225 drivers with the same max. voltage.
Can it be quantified how much better my geared extruder steppers would run?
I expect more torque at mid speed,
I'd expect a higher RPM range before torque drops, more reliable retracts/unretracts. I can even increase the gear ratio without getting retraction problems.

*) I'd have to disconnect the 12V fan buck converter.
With a little more soldering, I could even use ~50V HV/HC TMC5160 drivers and let big NEMA23 steppers run faster.

[T3P3Tony]

@o_lampe you can use the emf calculator here. plug in the motor details and see what the different voltages allow:
https://www.reprapfirmware.org/emf.html