RE: .91 Four Stroke Readings
O.S. 91 Surpass II-P MODIFIED
30% nitro Heli fuel Powermaster
o.s. F glowplug
APC 15X4W 10900 rpm (11K peak), idles at 2300, (my Saito FA-100 never got more than 10600 same fuel same prop).
Master Airscrew 15X4 12100, idles at 2500
Regards.ยด.