That would be a simple summary and allows access to a fuller potential of the
engine.
But ignores the additional work that has been published recently; if you're
running 98 RON then you can do much what you like above 4000rpm. Possibly
until any further data is published, such as detail of any resonant bands.
Roll-on
R3.
Duncan McF.
> On 25 April 2021 at 22:58 Griffo <scangriffin@bigpond.com.au> wrote:
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> Soooo!
> After all that, the advice remains;
> For fixed pitch propellers (including ground adjust) - setting pitch to get
a minimum 5200 rpm Static - will give you 5200 rpm on initiating take off (WOT)
with the engine speed climbing as air speeds increases. Adjust climb angle
to keep engine rpm below red line.
> Cruise Climb & Cruise should be at a minimum of 5200 rpm.
> I a nut shell - Rotax 91 engines thrive on /love rpm - you are not doing them
any favours operating below the Rotax recommended engine speeds.
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> Read this topic online here:
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> http://forums.matronics.com/viewtopic.php?p=501517#501517
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