[Fot] Trying to mount an electric fan on a high density radiator

[Bill Babcock]

It's not the weight, it's the fan. Takes a lot of horsepower to turn  
that at high speed when it's stalling and fluttering. Maybe then  
horsepower or more. Water pumps are pretty bad too, as are oil pumps.

On Jun 29, 2008, at 5:33 PM, RACER BUD wrote:

> Any weight or drag removed from the 'Rotating Mass' is a big help for
> power..less effort to spin stuff
> Racer Bud
> ----- Original Message -----
> From: "William G Rosenbach" <wgrosenbach at juno.com>
> To: <jrherrera90 at hotmail.com>
> Cc: <fot at autox.team.net>
> Sent: Sunday, June 29, 2008 5:18 PM
> Subject: Re: [Fot] Trying to mount an electric fan on a high density
> radiator
>
>
>>>>> I've always wondered how changing to an electric fan causes a  
>>>>> gain in
>> horsepower.
>>
>> It doesn't seem that the fan can take much power to run. On my  
>> Spitfire
>> 1500, when the thermostatic fan clutch was in its last throws of  
>> life,
>> running along at 4500 RPM the clutch would instantly engage. When  
>> it did,
>> it slowed the car as quickly as a sharp stab on the brakes.
>> Bill
>> ____________________________________________________________