RE: Europa-List: Rotax 914 question?

[Jim Thursby <jthursby@tampabay.rr.com>]

I won't argue with you.  You run yours at "economy cruise" rpm's and see
what happens.  I never did and never will.  

  Jim T 

-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Gilles Thesee
Subject: Re: Europa-List: Rotax 914 question?

--> <Gilles.Thesee@ac-grenoble.fr>

Hi Jim,

Understand your speed point, though running at 80% instead of 75% gives you
only a 2% speed gain. That's hardly an extra 2 knots.
Now, if speed is the main goal and longevity not a problem, why reduce boost
in descent ? As for the carbon issue, no Rotax 9xx I know of have suffered
of significant deposits.
Now saving fuel is indeed an honourable goal ;-)

Regards,

Gilles Thesee
Grenoble, France

>--> <jthursby@tampabay.rr.com>
>
>Speed.  And the 912/914 series longevity is based on 5,000 plus cruise 
>rpm's It does NOTHING but save a little fuel running them lower. And 
>carbon them up quicker.
>
>  
>

>--> <Gilles.Thesee@ac-grenoble.fr>
>  
>
>Those numbers correspond to rather high settings. While the engine may 
>run at 100 % continuous, what is the point for a cruise above 75 % ?
>
>  
>