<VV> CORRECT FAN COLOR?

[BBRT]

One more possible data point. I had a what looked to be NOS LM mag fan in GM 
box that looked dark gray, as I recall-95% surety.
I agree they must have been coated with something to prevent oxidation.
Chuck S
----- Original Message ----- 
From: "Chris & Bill Strickland" <lechevrier at earthlink.net>
To: <virtualvairs at corvair.org>
Sent: Monday, September 08, 2008 7:47 PM
Subject: Re: <VV> CORRECT FAN COLOR?


>I started buying Corvairs in about 1971, not a record but I was still
> pretty wet behind the ears -- I do not recall ever seeing an original
> fan that was not coated. The paint on the steel fans came off with use,
> especially in coastal or dusty, gritty environs.  The mag fans were also
> coated, but it was some sort of special coating, and it was originally
> black -- I always thought it was an anti-corrosion, fire retardant
> coating of some sort.
>
> With use, the fans collect a coating of whatever is in the air, and that
> generally abrades, attacks, whatever, etc the original coating.
>
> Seems like somewhere in the literature the coating on the mag fan is
> addressed by someone much more knowledgeable than myself.
>
> There is a current paper on 'FAILURE OF MAGNESIUM ROTORS IN
> MOTOR-OPERATED VALVE ACTUATORS' by the Nuclear Regulatory Commission
> where both general and galvanic corrosion of "magnesium motor rotor fan
> blades" (whatever they are) are discussed -- 
> http://www.nrc.gov/reading-rm/doc-collections/gen-comm/info-notices/2006/in200626.pdf
>
> Current common practice for magnesium parts is to apply some sort of a
> chromate conversion coating  prior to painting to control its relatively
> high corrosion rate.
>
> Speaking of literature, did you know the SAE has a 1961 paper titled
> 'The Corvair 95-ChevroletS Space Age Panel Truck' -- 
> http://www.sae.org/technical/papers/610208 ?
>
> Cheers!
>
> Bill Strickland
> _______________________________________________
> This message was sent by the VirtualVairs mailing list, all copyrights are 
> the property
> of the writer, please attribute properly. For help, 
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America, 
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs
> _______________________________________________