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Message
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)
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