Message-ID: <04d901c425aa$2c32a0c0$6401a8c0@Davidscmptr>
Reply-To: "David Carter" <dcarter@datarecall.net>
From: "David Carter" <dcarter@datarecall.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-3177627@logan.com>
Subject: Re: [FlyRotary] Re: coolant/water percentage?
Date: Sun, 18 Apr 2004 20:03:48 -0500
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----- Original Message ----- 
From: "Russell Duffy" <13brv3@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, April 18, 2004 4:24 PM
Subject: [FlyRotary] Re: coolant/water percentage?


>     "Water Wetter" -  Motor cycle shops have it - expensive.
>

> I'm planning on running this stuff  (water with conditioner) during times
> when freezing level is up above
> 10 or 12 thousand feet (it's 15K here in Texas in summer), then swap out
to
> 50/50 when cooler OAT and therefore don't need "optimum" cooling.
> David
>
>
> Why do you care what the temp is at 10-12k feet?  Do you think your
> thermostat will ever close completely at cruise power for long enough to
> freeze water in your radiator?  Unless you're planning to completely shut
> down an evap core in cruise, I don't think you will ever need to worry
about
> freezing in flight.
>
> Cheers,
> Rusty

Rusty, I spent 16 years in Des Moines, Iowa, with lots of winter temps in
teens, single digits, and below zero.  Stuff freezes in the rad - hence the
use of sheets of cardboard in front of the rad on really bad days or when
your antifreeze has been diluted.  Not very scientific report with all
variables accounted for, but, cooling systems freeze even when the engine is
hot and the coolant "ought" to be hot.

David