Bryan,
I was crew chief on the Miss America P-51. What do you want to know? We ran
stock pressure, water and glycol. The water spray is to cause the radiator
door to close at speed and thereby adding about 10 MPH It also helps keep
the after coolant temp to stay below 100C (along with the 60/40 ADI). I
won't run glycol in my engines because it is a poor coolant. Water is much
better at transferring heat.
Skip
At 01:35 PM 10/19/2003 -0700, Bryan Savage wrote:
>Dave,
>
>I've heard rumors of engines running over 4 Bar pressure. Next year when
>I'm at the Air Races I'll
>see what I can find out about the coolant & pressures they run in the
>Merlins. They spray water
>on the coolant and oil radiators leaving a visible trail of steam at 500
>mph.
>
>Bryan
>
>Dave Dahlgren wrote:
>
>>Think more pressure than that.. I will give you a small hint try 50 psi...
>>Dave
>>
>>Bryan Savage wrote:
>>
>>
>>>In addition you can run stuff in the cooling system that can't be dumped
>>>on the salt.
>>>so if you have an engine that is steam pocket prone (Flathead) you can
>>>run 50%
>>>antifreeze at 24+ lb and keep maximum coolant temperature below about 230
>>>degrees. because the vented tank water will boil at about 204 degrees.
>>>Depending
>>>on the class, that setup will reduce drag if you can direct the air
>>>around the outside
>>>of the car instead of through the radiator.
>>>Dave's method is the only way to go in a streamliner.
>>>
>>>Bryan
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