----- Original Message -----
Sent: Friday, January 21, 2005 6:47
PM
Subject: [FlyRotary] Re: Monster vs
Monster was [FlyRotary] Re: monster prop shrinking a bit
Interestingly, I talked to
Clark yesterday and decided not to trim my prop 76x88 at all. I am
getting close to 6000 rpm on take off at finally got 6800 rpm at WOT at 3800
MSL. However, my ROC only approaches 2000 fpm (more like 1800). In
discussion with Clark, we decided that given my heavier aircraft and primary
interest in take off and initial climb that any increase in rpm (by trimming
the prop) would likely be off set by less initial thrust (from less prop
disc area). So I was about ready to send my prop back just to have
the protective wrappings put on it.
Hi
Ed,
Well, that does seem sort of contradictory, unless weight really does
play into it. I specifically asked about losing climb because I would be
losing diameter, and he said I'd be gaining a bunch of thrust, which
would more than make up for the slight reduction in diameter. He
seemed quite sure that this change would "exceed my expectations". Now
that's a pretty big statement :-)
My
biggest worry here is that I'll end up cruising at nearly 7000 rpm, and might
not get such great fuel economy. Fortunately, that doesn't matter to
me. This is a toy, pure and simple.
Cheers,
Rusty (svelte monster)