Was looking at a Lancair the other day and they have two vents on the top of
the cowl that open when the plane is stopped.
Ken Carpenter N9XS
----- Original Message -----
From: <KarkelB@aol.com>
Subject: Re: 914 Hot Start problem
> Folks,
> i believe this is a problem that affects all 914s. I remember
> seeing the demonstrator suffer heat sock while doing demo's at wombleton.
> This was simply cured by opening up the oil and water flap covers on the
> cowling for a few minutes to let out heat.
> Talking to the guys at rotax in austria they recommend having hot air
exits
> on top of the cowling as the silicon chips in the electronic ignition
module
> and the TCU are affected when the temp goes above a certain temp( can't
> remember) i believe 75 degrees C. Rotax gave an example of the heat vent
on
> the Ikarus microlight.
> An absence of a hot air vent is bound to cause heat sock. I believe that
> explains why the engine starts up again when the oil and water flaps on
the
> top cowling are opened to allow for the escape of trapped heat after
engine
> shutdown.
> Those of you who have seen the new german Ikarus microlight might have
> noticed the hot air vent (small circular slotted cover on the top
cowling).
> Its looks neat. Thinking about doing the same on the water flap cover on
the
> top cowling. I don't believe rain water would go in as i don't intend to
fly
> or leave it in rain.
>
> Karim.
>
>
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