mu2Driver, both of my 110's are turning a Mejzlik 29-10 at over 6400 rpm, and the Menz or Biela 29-10 at over 6000. That's stronger than the 3W106 (former power king in the 100cc market) when the 3W is using a designed for/optimized for tuned canister setup that 3W and Pefa collaborated on. Those figures are stronger than anything the olde style 3W 120 ever put out, and are equivalent to the current 3W120 TOC, an engine that weighs TWICE as much. That's not exactly "overrated". As for "weak" 150's . .do you actually believe the "advertised horsepower" figures for the DA and 3W 150's? They've been proven to be about 30-35% OVER what the engines actually produce. The engine that came off my "Heavy" plane was one of the strongest 3W150 TOC's I've seen, easily turning an AM 30-12 3-blade at 5950-6000 rpm, and a Menz-s 32-10 at 6300+, yet that planes vertical performance and acceleration rate were noticeably slower than the other plane with a BME110.

Looks like I'm gonna have to get a video of this thing. . no one believes it unless it's on TV these days. .