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Date: Wed, 14 Dec 2011 17:53:46 -0600
Message-ID: <CAH_WSmo1uHS63pfNYQer1vhZjaMMBnR73-OB94qbzF4gsuTE+A@mail.gmail.com>
Subject: Re: [FlyRotary] Re: Low idle
From: Thomas Mann <thomasmann51@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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I'm posting this response on behalf of John Slade who is using a ISP that
is BLACKLISTED (one of many)
_______________________________________________________________________________________

This is the message:

Tom. Could you ost this to fly rotary for me?
I know this is a pain, but this one's important....

Chris,
I have idle set at around 800. Keep in mind that the higher the idle, the
harder these canards are to land. Don't listen to the RV guys - they have
flaps. Ideally you want the lowest idle you can get, that's not going to
stall the engine on final. It's worth a bit of effort to try and tune for a
lower idle, but this is the idle with the engine being driven by the prop,
which is a different area on the tuning chart to the idle when stationary.
You can only tune this area while airborne. I found this out when I first
throttled back all the way on a high base, and the engine stumbled. I
needed new underwear that day. So - lesson learned - test the throttle all
the way back at altitude over the field before doing it on short final.

Be ready to use both rudders to loose altitude if you set the idle high.
With the IVO in full fine pitch the thrust won't be too bad, but with a
fixed pitch prop idling at 1600 you'd be landing in the next county if
you're fast or high on final.

Regards,
John

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I&#39;m posting this response on behalf of John Slade who is using a ISP that is BLACKLISTED (one of many)<div>_______________________________________________________________________________________</div><div><br></div><div>
This is the message:<br><br>Tom. Could you ost this to fly rotary for me?<br>I 
know this is a pain, but this one&#39;s important....<br><br>Chris,<br>I have idle 
set at around 800. Keep in mind that the higher the idle, the harder these 
canards are to land. Don&#39;t listen to the RV guys - they have flaps. Ideally you 
want the lowest idle you can get, that&#39;s not going to stall the engine on final. 
It&#39;s worth a bit of effort to try and tune for a lower idle, but this is the 
idle with the engine being driven by the prop, which is a different area on the 
tuning chart to the idle when stationary. You can only tune this area while 
airborne. I found this out when I first throttled back all the way on a high 
base, and the engine stumbled. I needed new underwear that day. So - lesson 
learned - test the throttle all the way back at altitude over the field before 
doing it on short final.<br><br>Be ready to use both rudders to loose altitude 
if you set the idle high. With the IVO in full fine pitch the thrust won&#39;t be 
too bad, but with a fixed pitch prop idling at 1600 you&#39;d be landing in the next 
county if you&#39;re fast or high on final.<br><br>Regards,<br>John<br></div>

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