Ed's words are a very important detail that anyone with an IVO or an adjustable speed (but not constant speed) prop
Chris.. are you going to install the IVO constant speed attachment? This would take care of much of the concern that Ed is alluding to.
As you accelerated and the load "decreased" the plane would try to spin the prop faster (or if you opened the throttle more, and the engine tried to turn faster).. the constant speed module would then increase/coarsen pitch to maintain the set RPM... keeping you at a good HP producing/torque producing RPM setting, but increasing thrust while maintaining RPM.
Dave
On Thu, May 27, 2010 at 8:06 AM, Ed Anderson <eanderson@carolina.rr.com> wrote:
No easy answer – to all the nuances of producing power, Chris.
This is important, Chris. Years ago, there was a long EZ builder who had a non-rotary auto engine who unfortunately ended his first flight in a fatal crash into a cactus plant. He understood the electronics just fine, but did not understand the relationship between rpm and thrust. He set his adjustable pitch prop for maximum RPM – which mean minimum prop load, which in his case mean minimum thrust. He managed to get airborne with this limited thrust, but could not apparently climb out of ground effect with the flight ending on impact with a cactus.
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