<VV>Fan HP

[Padgett]

>It's all in "Corvair Basics"!

Now that is the kind of answer I would expect from a Microsoft rep. 
Entirely accurate but since I do not have a copy (yet, ordered several 
books last week, plan to order more on Monday), useless.

Am in the process of building a library (and the prices seem quite 
reasonable) but was hoping that someone would furnish me with three data 
points: HP required at 2,000/3,000/4,000 engine rpm

BTW can see that just removing the lower shroud would not help much unless 
something is done about the underbody pressure at speed, why I keep 
mentioning an air dam.

Understand that the elecric fan concept has probably been beaten to death 
but has anyone done a flow analysis of the engine compartment without the 
fan ? Tried routing underbody air from the rear wheel area into the engine 
compartment ?

Most modern cars are "bottom breathers" and use an air dam below the 
radiator support to both route air to the radiator area and create a low 
pressure area under the engine for extraction. Fans today are computer 
controlled and shut off above 50ish  mph.

Think a cheap experiment would be to remove the centrifugal fan entirely 
and mount a 90's 3800 radiator fan ($20 from a pick-a-part) to pull cooling 
air from under the car and exhaust through a deck lid propped up an inch or 
two. Has anyone ever tried that ?

A lot of things that are not only common but cheap today were impossible in 
the 1960's.

Padgett