Jerry, Here are some old 13B 2.85:1 PSRU RV6A performance related messages from Ian.
Paul
-------------------------------------------------------------------------
Ian & Irene Beadle wrote:
I finally put a thermocouple on the outlet of my RV6A oil cooler.
The temperature drop across the cooler varies a bit with inlet temp.
but is around 30 degrees C. The sump temperature gets up to 115C on
climb at 1000 ft/min. Ambient 25 C. The water stays around 80 to 90. I
haven't done any high power runs yet but indications are that this is
one quick aeroplane. I am swinging a 72"X81" propeller. 2.85 drive.
RPM at start of ground run 5800.
I have sent some more information on the mixture indicator. The
components added to the input area are a clamp I found necessary to protect the IC.
Ian Beadle
beadles@webace.com.au
-----------------------------------------------------------
Ian Beadle wrote:
Hi Paul
Attached is the map with my routes.
I did two flights to Broome, one with Irene, coastal, staying at Coral Bay.
The other by myself with camping gear the more direct route,
which involved crossing part of the
Great Sandy. How's that for confidence?
The plane performed faultlessly. I found I can plan for
ground speed of 140 knots (X 1.151 or 160 MPH) and fuel burn of 27
litres(7 USG) an hour and arrive sooner and with
extra fuel. If I wind her up to close to max. at 9500 ft.
she burns disproportionately more. At
2000 ft and 120 knots indicated, consumption is less
than 20.l/ hour. Great if the needles are
showing a bit low.
I refueled a couple of times at roadhouses to avoid
call out fees. No problem
as they were both close to the strips. BP are currently
installing 24 hr swipe card systems at the
country airports which will make life easier.
Note for Ed. Any chance of the circuit of your fuel flow meter?
It would be great to know how much
is left in the tanks.
Ian. RV6A Australia.
--------------------------------------------------------
Ian & Irene Beadle wrote:
Another rotary RV6A leaping into the sky down under. 10 knot breeze from
the East (off the desert). Taxi out with the canopy up, its warm already.
Checks and radio done, wind on the power using the vernier to avoid the
torque steer, 6000RPM rising to 6200 (no stalled prop. here) get her off
into ground effect ASAP because we are on gravel and then up we go. Back
off the power to 5500RPM 1000fpm to 6500ft level off and watch the computer
decide that we are cruising and go from the rich LEDs to the lean LEDs.
Constant rpm and M pressure.
Just for fun try WOT. 7000RPM. Just under 200MPH.
A little more tuning, drag reduction and a coat of paint should see
7200RPM. Fly along the coast for a bit, visit the other club, and back
home to heaps of thermals on final, they just add to the fun.
Ian Beadle RV6A Australia.
beadles@webace.com.au
------------------------------------------------------------------
Ian Beadle wrote:
Hi Paul
Some of the soon to be Roto flyers might be interested in my recent flight
from Perth to Broome Western Australia. Vans RV6A. NA 13B.
900kn Miles in the heat of an Aussie summer. Total of 7 hrs engine time,
10 kn. head winds. One refuel stop at 500M. [312 Miles] (15 mins into reserve,
won't do that again)
Cruise at full throttle 9500ft temp. 10 degrees C [50 F]. 6400 rpm leaned past peak
rpm. 130knots on the ASI. 30 liters/hr. [8 GPH] average included 1hr very low level
OS temp. 40+ d. C. [104 F] Engine temps up top 90 {194 F] oil 85 [185 F] coolant.
Near ground 90 [194F]
and 90. Climb limited to 500fpm. Rather warm in the cab during the low level
bit.
Fuel economy definitely suffers with increase in outside temps. I get around
26 liters/hr [6.5 GPH] in the cooler months.
Ian. Broome Australia.
The AirCraft Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/
Copyright 1998-2003 All world wide rights reserved.