Hey Guys,I haven't been following this thread closely but everything thing that
Jeff has mentioned is completely accurate. Our performance is nearly identical.
I only used full power to catch him or climb. I ran 2 to 300 rpm below full
power but did know what my true airspeed was at all times. Our true speed was
in the 165 mph range all the time. While I would not call it an issue it was
certainly easier to get higher cylinder head temps in climbs so I pretty much
limited climbs to 400 to 500 per minute. I could still climb at close to
1000/min at 6000" (higher density alt.) I never even thought about racing.
Probably because i was so far from home over unforgiving country and self
preservation prevailed. Two important information sensors quite during the
trip. one was carb throat temp and the other was the manifold pressure. So I
can not give accurate number for comparison. I did have 2 legs of well over 800
miles through light and variable winds and i was able to make true airspeed and
ground speed match number for number. running right around 168 mph at 3050 rpm.
the last leg with home feeling like it was in sight I throttled up but I was
smited with20 to 30 mph head wind so I was barely making 150 over the ground.
Jeff is an excellent pilot, carries an incredible amount of
knowledge, and is a true gentleman on top of that.I hardly ever suggest advice
but my council is if jeff is talking you better be listening. I consider it a
real honor to have been able to spend that amount of time flying with him. Joe
Hortonactual trip miles 5128 traveled
.
---------- Forwarded Message ----------
From: Jeff Scott via KRnet <krnet at list.krnet.org>
To: 'KRnet' <krnet at list.krnet.org>
Subject: Re: KR> Misc
List-Post: krnet@list.krnet.org
Date: Wed, 10 Sep 2014 22:40:19 +0200
> ****************
>
> Jeff said -
>
> "We flew in formation with each other for roughly 1150 nautical miles I
> don't think either of us ever ran at full throttle more than a few
> minutes to catch the other guy if we got separated."
>
> I continue to be mystified when I read things like this (flying with
> partial throttle). Unless you're down low, who flies with partial
> throttle? Somebody obviously had to pull throttle to slow down so the
> other could keep up. Either that or, as with Richard Shirley's Jabiru,
> both Jeff and Joe had to fly at partial power to prevent overheating :-).
>
I don't have heating issues at full throttle cruise, and I doubt that Joe does
either. There was simply no reason for either of us to be running full
throttle except during climb-out. We could burn more fuel, go a little faster,
and increase the cockpit noise level, but why? We were bucking a head wind and
still making 130 - 140 kts at 10,500' headed west and 11,500' headed east (head
winds both directions). We were crossing over some beautiful terrain with both
of us taking lots of photos while enjoying the trip.
FWIW, 10,500' is down low. If I'm cruising at full throttle, it's because I'm
either above 12,500' or 'cause I want to embarrass one of the local Mooney
drivers or my next door hangar mate in his Cirrus. :o)
We followed the same routine for all 4 legs we flew together. I would launch
first with Joe following behind. I would get to altitude and set course, then
throttle back and wait for Joe to catch me. Joe has an autopilot, so with him
leading, we flew a much straighter course. Once Joe was in front of me, I
would fly off his wing and let his autopilot do the navigating. I never asked,
but I doubt Joe was running full throttle at cruise. Nor was I while flying
off his wing. You'll have to ask Joe if his observations were any different
from mine.
-Jeff Scott
Los Alamos,NM
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