I found this message to be of interest. My biggest concern with more than 30
hours
endurance is that more than my wings would be wet. I am putting a 914 in my
bird when the time comes, but have not seen a manual. I don't know what Rotax
recommends, but I plan to use Mobil 1 or Amsoil synthetics in mine, mainly for
the sake of the turbo.
Vaughn Teegarden
N914VA
standing here with wires in my hands and fear in my heart
"My engine ( a plain old 912) has 720 hrs on it now and at last check showed
virtually
no sign of use. I also run it at 4ooo rpm for economy cruise. I see less
than 10 liters per hour of fuel flow (in cold air). I could not think of any
reason why the engine would wear prematurely if run at such speeds (or does
idle kill engines ?). Every millimeter the throttle can be pulled back will
improve
fuel flow. Only a tick more and she uses 14 liters with only a 2 knot gain
in speed.
I am looking forward to building those glider wings and partially wet them. With
onboard fuel (and only a slight disregard of gross weight) the endurance could
be pushed to over 30 hours. Where would you rather be than in the air ?"
happy skies,
<Thomas, N81EU>
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