If you fit an Arplast V.P.prop, the prop-centic power/monitoring unit which
fits on the engine is smack in the way of airflow though the shroud's supply
of air to the left-hand cylinders. I cut through the shroud at this point to
make room for the Arplast bits and then made a second orifice in the left
hand side of the cowling with a duct to serve the left isolated bit of
shroud. Don't yet know if that keeps the lh pots cool enough as the 'fit the
windscreen before you fit the engine' -type quibbling has delayed
commissioning somewhat (4 months so far!)
----- Original Message -----
From: Graham Singleton <grasingleton@avnet.co.uk>
<europa@avnet.co.uk>
Subject: Re: Rotax 912S Air Shroud Hood
> > What I want to know is will I need one? If so what is it made of,
> > especially the
> >resin type? Does it fit with the Classic cowlings?
> >Waiting in anticipation.
> >Tim
>
> I think you do need one. AFAIK the shroud is made of flame retardant
> polyester/glass. It would be even better made of phenolic, but that isn't
> practical because you can't buy small quantities of the resin unless you
> have a kindly local producer using a lot of it. Shelf life is very short.
>
> Flame retardant polyester or vinyl ester would be fine if you can get it.
>
> Graham
>
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