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.

BTW Ian's PSRU is  2.85:1 Ross.

Paul Lamar

      Ian,

        How far past peak do you lean? I am sure you are aware Tracy

Crook has

  gone as far as 200 degrees F with good results.

      Kelly Troyer

Hi Kelly
I don't have an egt gauge because the fittings that came with my Grand
Rapids are the drillem and clampem type and I could not bring myself to
drill that lovely SS exhaust, so I lean at altitude until the RPM drops
about 3 or 400. Any more seams to be counter productive for economy and the
motor loses that lovely hmmmmmmmm.

Ian Beadle

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.