Brison 5.8 Readings.
Prop Zinger 26X12 (yes I know the 26X10 is preferred).
Temp 75degF.
Humidity 91% (yuk!).
BP 29.84
Fuel 89 octane with Amsoil @ 64: per Brison Recommendations.
Time on engine is about 15 minutes.
Full power 5900rpm.
Idle 1500rpm.
Amount of shake for you twin only guys, equal to or less than most twins I've seen. As smooth my buddy's 3W78 twin (he helped me run then engine) and smoother than my other buddy's M&R 100 twin. This seems to be one sweet motor. Thanks Philco!