----- Original Message -----
From: "Haywire" <haywire@telus.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, August 12, 2003 3:18 AM
Subject: [FlyRotary] Re: Cooling / Pressure recovery


>
> >
> > Hmmm......   You don't think 8 seconds counts as cooling do you?  : )
> > By cooling, I mean that the temperature has stabilized.
> > Lots of dragsters have no cooling system at all and "cool" OK for 5 - 10
> > seconds.
>
> I should clarify this; I consider boost pressure to be more than full
power,
> as this airframe really isn't designed for this. (this was an issue for
the
> inspector as well but that's another story) I really only want boost at
> altitude, although I of course had to test it:-). For my purposes 30"MAP
(or
> 0psi boost as gauge reads) is full power and I've run it at this for up to
a
> minute combined with taxiing at other various power settings and never
seen
> any problems. I really wish I could give more info than this, but I hope
> this is an indication of how well it will work in the air, without being
too
> draggy.
>

If the engine temperatures have stabalized in one minute of full power
running then it is indeed cooling.  But this seems unlikely.  I think I can
run at WOT on the ground for 1 full minute (and stay under redlines) but the
temps are still climbing.  In three minutes my coolant would be spewing out
of the cowl.  Is this a problem?  Not at all.

Tracy