flyrotary@lancaironline.net Mailing List Archive

Hit the nail again - Lynn provides a logical reason why I've made the decision to use water in summer (when I need best cooling) - with system corrosion and lub protection using John Deere "Coolant Conditioner" (equiqalent to motorcycle racing's Red Line "Water Wetter", except about 1/4 the cost). Then in cooler weather, will drain that and use std 50/50 mix

. . . More of my "non-flying" views.

David Carter

----- Original Message -----

From: Lehanover@aol.com

To: Rotary motors in aircraft

Sent: Monday, March 19, 2007 5:43 PM

Subject: [FlyRotary] Re: water boiling point

In a message dated 3/19/2007 5:18:31 P.M. Eastern Standard Time, wrjjrs@aol.com writes:

Al,

I understand your system and it seems like sound reasoning. The reason I believe many of the Rotary builders run higher pressure is the rotary does stress the cooling system more than the Subaru. The extra BOIL-OVER protection rather than the simplicity of the system wins out.

Raising pressure to raise boiling temperature seems more effective for over-all cooling than to add chemicals that reduce heat transfer while raising boiling temperature. No practical coolant works as well for heat transfer as distilled water.

The temperature you see on the gage, is the temperature of the coolant touching the sensor bulb. Not the coolant temperature between the spark plugs.

Lucy, come up here. My view esploded.

Lynn E. Hanover

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