<VV> CHT Re: valve seats and "Ping"

[Mark Durham]

Scotty, yes, I have seen some where that gap is bigger than it should
be. I simply adjusted the fan height by tapping the press fit shaft in
the upper cover until the fan just cleared. Mark Durham

Sent from my Windows Phone
From: J R Read
Sent: 5/16/2012 15:17
To: ScottyGrover at aol.com; virtualvairs at corvair.org
Subject: Re: <VV> CHT Re: valve seats and "Ping"
Got pix?
Later, JR

----- Original Message -----
From: <ScottyGrover at aol.com>
To: <virtualvairs at corvair.org>
Sent: Wednesday, May 16, 2012 4:49 PM
Subject: Re: <VV> CHT Re: valve seats and "Ping"


>I have designed a series of fans for the purpose of improving the air flow
> through a Corvair's engine. the problem with any of the factory stock
> units
> is  that there is too much space between the fan and the upper shroud
> (turkey  roaster) which allows air to go back by the fan (the technical
> term
> is"reversion.")  my latest fan design involves a fan with blades which
> rise  up
> into the airstream and a "fan ring" which fastens to the turkey roaster
> and
> which minimises the gap between the fan and fixed-position parts.  This
> allows less air to revert over the fan blades, keeps the air and the
> pressure going through between the fins where it belongs.
>
> Scotty from Hollyweird
>
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