Yeah.

Those ST.45 ABCs are screamers. Mine was turning around 14,000 with 10~6 IIRC. Gonna put it back on the Lucky Stik when I get it repaired. Haven't run my NIB ST.51 yet but hope to get a couple S90K/G90s back in the air on some semi-scale acro types before too long. Gonna pipe them for 14" props to take advantage of this engine's torque. Using stock or Pitts muffs will only 'clean up' the installation and rob available power from almost any engine.

Terry in LP