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Perhaps of more interest to us is that with 33% solution of EG in water; and
a 23# pressure cap, the boiling point is about 275 F.
Al
Ron Springer wrote:
>60% antifreeze and 40% water is the lowest according
>to this website which includes a chart:
>
>http://www.gi.alaska.edu/ScienceForum/ASF6/680.html
>
>Ron Springer
>Folsom, CA
>
>--- David Staten <Dastaten@earthlink.net> wrote:
>
>
>
>>Steve Brooks wrote:
>>
>>
>>
>>>I've been working so many hours lately that I
>>>
>>>
>>really have not had much time
>>
>>
>>>for flying. It had been a month since I had flown
>>>
>>>
>>my turbo rotary powered
>>
>>
>>>Cozy IV, though I had run it on two occasions
>>>
>>>
>>prior.
>>
>>
>>>On the 4th of July, I drained the anti-freeze, and
>>>
>>>
>>replaced it with
>>
>>
>>>distilled water. Well, maybe 5% antifreeze is
>>>
>>>
>>left, but not more than that.
>>
>>
>>>I took of this morning, with the OAT at 70 degrees.
>>>
>>>
>> I took off at my usual
>>
>>
>>>5 lbs of boost on the turbo, and rotated at 80
>>>
>>>
>>knots about 1500 feet later.
>>
>>
>>>While the flight was outstanding, with smooth air
>>>
>>>
>>an nearly unlimited
>>
>>
>>>visibility, I did not see any marked improvement in
>>>
>>>
>>the straight water, over
>>
>>
>>>the 50/50 water / antifreeze mixture.
>>>
>>>
>>>
>>>
>>>
>>The advantage out of a 50/50 mix is that it will
>>boil at a higher temp
>>and freeze at a lower temp than any other ratio of
>>water/antifreeze. Ask
>>any high school chemistry teacher. Improved cooling
>>is not typically
>>one of the benefits seen, if all other variables are
>>kept equal.
>>
>>Glad you had an uneventful flight.
>>
>>Dave
>>
>>--
>>Homepage: http://www.flyrotary.com/
>>Archive and UnSub:
>>
>>
>>
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>
>
>
>
>--
>Homepage: http://www.flyrotary.com/
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