Tim McAdams talks about his two days FLYING THE R-66
"The R66 is powered by a Rolls-Royce RR300 (model number 250-C300/A1), a new engine based to the proven 250-series engine (same engine used in the 206B). It is mounted below the transmission deck at a 37-degree angle which gives easy access for maintenance. The engine produces 300 shaft horsepower and is derated to 270 shp for a five-minute take off rating and 224 shp for max continuous operation. Starting is simple; igniter switch to enable (a nice feature that allows you to motor the starter without firing the igniters–no more need to pull the igniter circuit breaker); press-and-release the start button (it’s latched so no need to hold it down), at 15 percent N1 push the fuel control in and monitor engine light off and acceleration. At 65- to 67-percent N1 the starter disengages and the generator is switched on."