Pete, About the Saito 170R what would you like to know? I can tell this much without question, this engine and aircraft are a perfect match! The sound is beautiful and the idle sound is mesmerizing.

The pulling power is perfect for the scale of a 450 hp Stearman. I tried different props, 16x8 graupner (8500) 17x6 wood (8500) and an 18x6 wood (8000), these of course on an engine not broken in yet on S&W 10% fuel. The 16x8 pulled nicely, 17x6 very nicely, 18x6 sluggest to get off gnd. I yet to try APC's 16x8,17x6. I use a McDaniel onboard glow drvr. and can turn it on and off via a sw. on tranx. works perfect and also provides forward weight for balancing plane. My radio system is of course Spectrum 7, got it when they first came out, not a glitch, works great, and no interference worry's period. Have flown it in 4 different aircraft, biplanes with flying wires everywhere, wire pull-pull systems, ignition systems etc.

Rcten