<VV>Fanz

[Frank F Parker]

> Doesn't make much difference how many blades you use or how much engineering 
> you do, it still takes a certain amount of power to get a certain amount of 
> air through the restricted engine area and an electric motor won't do it. Did 
> that electrically cooled car run in the rally?  I doubt it, it never would 
> have finished.
> RonH
>
I thought the same till I saw the car here in Portland. He drove it up 
from Reno so you have to give that to him. There was not a trailer.
When faced with the fact that he drove it here, you start to think, Ok 
what am I not thinking about. In this case, I think it is the efficiency 
of the fan. The stock fan is pretty poor in flow vs HP required and I 
expect a modern electric fan with curved blades has had some cpu design 
work done and thus has a better flow vs HP profile.
I talked to Tom about the setup. The fan is a high performance Spal unit, 
a 16 inch unit. He said it was a HP unit BUT it was not a deep motor unit.
There was plenty of room for a deeper, stronger motor. He ran it for me 
and unit draws 20 amps. Flow out the bottom flappers was pretty strong.

That said, I believe it will work for regular driving and resonable road 
loads with an occasional wot blast  followed by enough recovery time to 
stabilize temps. Possibly with the lastest designs in fan technology and
super magnet motors, you could do a "full load" electric fan setup. It
probably takes more than a standard Spal fan, BUT you have to give Tom 
credit for making this setup work well enough to drive car on a long trip
in the summer up here to Portland.

He says in 50 deg temps, it cools too much. You could use a PWM ( pulse 
width modulated) controller for cool and winter conditions.

regards,

frank parker