<VV> Re: Electric Fans . . . again

[tkalp at cox.net]

Mike,

Instead of comparing the fan to a heater fan, compare it to the cooling fan on your water pumper,  how many of those have you replaced?  One could even argue that the life of a heater fan is shortened because it sits idle for months at a time.

This also brings up additional questions about the efficency of the stock fan.  Let's see, 20 amps at 12 volts is 240 watts or about 1/3 of a horsepower . . . far less than the stock fan pulls.  If you are worried about the life of the electric motor, figure out a way to drive the new fan with a belt.

Upgrading the alternator is an excellent point.  With a constant 20 amp draw a stock 37 amp alt. would turn into a 17 amp unit.  

Terry Kalp

> 
> From: Mike Stillwell <yenko117 at yahoo.com>

> Subject: Re: <VV> Re: First Photos from Portland
> 
> 
>   Call me a "Stocker", but I'm skeptical it would hold
> up under the range or service that most users would
> subject it to. How often do heater blower fans get
> replaced, and how often are they used? Half the time?
> The fan that would replace an engine cooling blower,
> would be on all the time, in a hot environment, where
> electrical items, don't tend to last as long. Maybe
> for a racer, you could swing it, since you generally
> have a tow vehicle present if the thing fails at the
> track. 
>  One thing that I didn't understand, was why the stock
> alternator was kept, when a new mount had to be
> fabricated. I would have switched to a smaller
> internal fan/internally regulated/one wire unit. These
> are smaller, so less load is placed on the engine -
> which is a large part of getting rid of the belt
> driven fan. But then I guess I wouldn't be a "Stocker"
> after all.
> 
>  Mike
>  YS-117
> 
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