Mike Wills wrote:
 >
 >   If your talking about an electric fan, yes I think you are missing
 > something. I have heard of cases where the fan bearings failed while
 > freewheeling in a duct at cruise speeds. Also the fan freewheeling in

the

 > duct reduces the airflow in the duct which could lead to overheating

and it

 > contributes significant drag.
 >   I plan to install a couple of windshield washer reservoirs and rig

spray

 > bars in front of my rad and oil cooler cores prior to first flight.

They

 > can be turned on as needed to spray cool water on the cores. I hope

this

 > will provide enough reserve cooling capacity for ground cooling and in

case

 > of overheating problems during the test program. Hopefully they wont be
 > needed and can later be removed but they are cheap and easy insurance

for

 > the taxi testing and first flights.
 >
 > Mike Wills

Mike,

Please reread my description of my intentions. The fan is to be in a
separate duct that will not have airflow when the fan is off. I rejected a
long time ago the thought of having it in the main duct.

The spray bars have been used successfully, I think by Tracy Crook. I don't
think that I want to use something like that as standard operating
equipment.

Dick Gregory

 
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