<VV> Electric cooling fan testing

[Mel Francis]

Well, electric cooling-fan testing season has begun in earnest, here in the 
Midwest, since we now have some good, hot, California-type weather to work 
with!

On Saturday, I did a baseline run around a fairly loose country driving 
circuit, speeds between 40 and 60, about 25 miles in 90F ambient and found 
that the head temps are quite flat, mostly about 360F. Oil temps appear to 
level out at 245F.

Remember, this is all with the pressure duct connected to the nose. At some 
point, I will be closing off the pressure feed and re-opening the top fan 
cover on the engine. This will give a range of temps that would represent a 
normal Corvair engine compartment, with the open fan pulling from the 
center. The final tests will be with the fan shut off at higher speeds, 
relying just on the ram air in the duct for cooling. Comparing temps at 
70mph, with and without the fan, etc.

But I'd like to record the actual driving readout with basically the same 
equipment as was used for the first series of flat-fan tests. Can anyone 
advise what equipment was used and if it's available for a second set of 
tests? The graphs that were produced were very informative.

I believe this set of tests will show a better set of figures than the flat 
fan had. It would be great if the equipment was the same, to reduce the 
chance of error due to any miscalibration.

Any information would be greatly appreciated,

Mel Francis
Oconomowoc, WI