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Re: Europa-List: Re: Cruise speed data for Monowheel with 912ULS

Subject: Re: Europa-List: Re: Cruise speed data for Monowheel with 912ULS
From: D McFadyean <amimcfadyean@talktalk.net>
Date: Mon, 26 Apr 2021 09:02:56

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:
> 
> 
> 
> 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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> 46
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> Read this topic online here:
> 
> http://forums.matronics.com/viewtopic.php?p=501517#501517
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