<VV> metal vs. plastic fan

[corvairs]

JR and all - The fan has nothing to do with the higher output. The 
increase in air moved is in the motor - which puts out 40% (on average) 
more rpms at only slightly higher electrical load than the older stock 
motors. Of course if you have a really old stock motor it will be even 
more impressive than that. The plastic fan, which is no longer 
available, was always suggested not only because the metals one had 
often come loose to the hub, but also because the increased motor rpms 
put more start up stress to the 2 piece metal fan and would be more 
likely to cause one to seperate.   Lon

www.corvairunderground.com
Do you get our E-Bullitin?

J R Read_HML wrote:

> Ron...
>
> So Far As I Know, when bought as a unit, the motors with the plastic 
> fans were referred to as "high volume".  Don't know why though.  The 
> weight of the plastic, the shape of the fins, the output of the motor 
> (my guess is that one), some other reason?  For a while, the plastic 
> fans were available separately.  More recently, only with a new 
> motor.  Don't know if that is even still available.  Many GM cars 
> use/used the same of very similar fan/motor.  The mount holes will 
> match up, but there may be a round hole about an inch in diameter 
> which would need to be plugged for Vair use.
>
> Later, JR
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> ----- Original Message ----- From: "Ron" <ronh at owt.com>
> To: "Ray Rodriguez" <reray at echoes.net>; <virtualvairs at corvair.org>
> Sent: Monday, May 14, 2007 10:15 PM
> Subject: Re: <VV> metal vs. plastic fan
>
>
>> It makes no sense that a lighter plastic fan puts less load on the 
>> motor. How?  The only difference would be bearing friction and that 
>> should be nil. The only significant load on the motor is from the 
>> work done in blowing the air and that will be the same, metal or 
>> plastic.
>> RonH
>>
>>
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