That's a Rotax factory advise and I suppose it has to do with the
correct lubrication of the valves. I felt that the engine also runs
smoothest in the range of 4500-5200 rpm.
Klaus
Thomas Scherer wrote:
> Hi Klaus ! what is the reason for not cruising below 4300 rpm ? I
> crossed the Atlantic and Northern America with 4ooo rpm and intend to
> do the same over the Pacific. Fuel consumption ~ Range I found are
> optimum at that setting. All temps remain well
> low. Sincerely, <Thomas, N81EU>
>
> ----- Original Message -----
> From: Klaus Dietrich
> Cc: Baker, Dino (FMC) ; europa@avnet.co.uk
> Subject: Re: Andy Draper, help please.
> - Have the carburators checked if they are synchronized
> (preferably by an Rotax authorized workshop; those who
> service the Katana's and Dimonas)
> - have the spark plugs checked
> - have the gear box checked (there are several technical
> informations issued by Rotax concerning the gear box); if
> the gear box is not OK, those starting problems are typical!
>
> - have the prop dynamically balanced and check that all
> blades are in the same horizontal plane.
>
> The 912 UL has to start immediatly and smoothly!! However
> idle speed until engine is warm has to be 2.500 rpm (and not
> below!) Idle speed when engine warm min 1500-1800 rpm. (Do
> not cruise below 4.300 rpm)
>
> Klaus
>
> "Bob.Harrison" wrote:
>
> > Hi! Andy.
> > For my "penneth" get rid of the dog, I really believe that
> > the
> > characteristic shaking on start up and "cut"
> > subjects the whole airframe to the very extremities in a
> > manner not good for it.
> > Here's the rub....... get a 3300 Jabiru for instant start
> > and sewing machine
> > smoothness!!!! (Pity about the continuing intermittent
> > misfire though!!!!)
> > Regards
> > Bob Harrison G-PTAG Europa Kit 337 /Jabiru 3300
> >
> > > -----Original Message-----
> > > From: owner-europa@post.aviators.net
> > Baker, Dino (FMC)
> > > Subject: Andy Draper, help please.
> > > Sensitivity: Confidential
> > >
> > >
> > > Andy,
> > >
> > > On several occasions recently when starting my Rotax
> > 912UL on my
> > > Europa, the
> > > engine starts but stagnates and shakes (like a wet dog),
> > before picking up
> > > to normal idle speed. Any suggestions please as to the
> > cause and a fix,
> > > apart from getting rid of the dog!
> > >
> > > Regards
> > > John Baker,
> > >
> >
> > > The Europa List is supported by Aviators Network UK -
> > info@avnet.co.uk
> > >
> > >
> >
> > _
> >
> > The Europa List is supported by Aviators Network UK -
> > info@avnet.co.uk
>
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