Andy,

The 8x6E seems to keep the motor at its optimum power output without overheating (static...). I see the following choices for SF props that might be suitable:
[ul][*] 7x6[*] 8x3.8[*] 8x6[*] 9x3.8[*] 9x4.7
[/ul]
The 8x6SF will probably exceed the motors amp rating by quite a bit (8x6E seems to be about max). What props do you suggest trying? The motor is rated at 22A eta_max and 30A peak.

Thanks, David.

Edit:

Dualsky Calc actually states the motor should pull 22A @ 248W on the 8x3.8SF and 28.9A @ 320W on the 9x4.7SF (11K+ rpm). Would the latter be excessive? Maybe not provided WOT is properly managed. Smaller props don't seem to pull enough electrons (or are they holes? ).