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DC-DC Buck Convertor - 12V To 3.3V 5V 9V

I'm have looked around and can find individual schematics for making a fixed switching regulator 12v to 3.3v or 12v to 5v.. or an adjustable switching regulator that I can use to make a 12v to 9v convertor, but I can't find a schematic for a simple circuit that will take 12v from a battery and convert it to 3.3v, 5v and 9v. Anyone done this already?

If a DC Wheelchair motor is rated at 9.4 Amps...

If a DC Wheelchair motor is rated at 9.4 Amps, is that the under full load?

I can't find much in the way of specs, but the motors are clearly labelled..

Type: SSG0220
Voltage(V): 24v DC
Amperage(A): 9.4A

  ** EDIT **

I didn't get the answer I was seeking, so today I pulled the base out. After some testing, the results indicate that the 9.4v must be an average load reading.

With the base lifted (wheel turning freely) the current draw was 3.3A