----- Original Message -----
Sent: Monday, September 06, 2004 1:06
PM
Subject: [FlyRotary] Re: Manifold
Pressure
Thanks David and Ed for the
comments.
I believe I have a pretty good
understanding of the MAP variables, and the conclusion continues to be that my
intake runners, and TB are too small for best WOT "MAP", though that's not
necessarily a bad thing.
I guess the important thing for me to keep
in mind is that improving the MAP, may not improve the power. It's
entirely possible that my smaller runners, and subsequent higher
velocities are giving me more power than I'd get with bigger
runners. I certainly can't deny that I'm making significantly
more power than in any previous NA configuration. I would expect
that I'm matching, or slightly exceeding Tracy's 13B static, and climb power
in my current configuration. He had a good pressure recovery scoop on
the 13B, so it remains to be seen whether I can match his power at
speed.
Bottom line is that I'm happy with the
current power that's being produced, and any improvement beyond this point
would require a huge investment in time, and effort. At the moment, I
have far bigger problems, like adding enough oil cooling to make up for this
extra power. At least the current cooler isn't leaking (yet).
Thanks,
Rusty (working on re-installing the series
EWP)
I have to agree with you, Rusty.....sooner
or later (hopefully sooner) you reach a point that you are happy with the
power put out versus the heat output and fuel consumption. Any fine
tuning after that usually gets expensive, time consuming and
gives smaller gains in effeciency (in comparison to initial
effort that offered greater gains) , unless you are an effeciency guru like
Klaus Savier, who spends many dollars and months trying to squeeze an extra
knot out of his VariEze. Sometimes good enough really IS good enough.
Time to enjoy what you have, eh? Just one more opinion. Paul
Conner, happy with a NA 13b.