<VV> alternate fans

[jvhroberts at aol.com]

 In convection oven, the fan motor is outside the oven. And STILL, nowhere near enough static pressure. 

 

John Roberts
 

 

-----Original Message-----
From: Gary Moore <tdrinkr at yahoo.com>
To: virtualvairs <virtualvairs at corvair.org>; Ron <ronh at owt.com>; J R Read <hmlinc at sbcglobal.net>
Sent: Sat, Mar 16, 2013 11:29 pm
Subject: Re: <VV> alternate fans


I should not have used computer fans as an example. There are fans that are used 
in convention ovens that can withstand the heat. This was meant as a "what if" 
question. So what would happened if a pair of small heat resistant fans were 
placed at the back of the lower shrouds that came on when the thermostats opened 
the exhaust doors? Would  the back pressure that causes the top fan work less 
efficiently be reduced? 
During the electric fan test were there any measurements taken with the heater 
blower on? This would be a near equivalent.   
GMoore 

--- On Sat, 3/16/13, J R Read <hmlinc at sbcglobal.net> wrote:

From: J R Read <hmlinc at sbcglobal.net>
Subject: Re: <VV> alternate fans
To: "Gary Moore" <tdrinkr at yahoo.com>, virtualvairs at corvair.org, "Ron" 
<ronh at owt.com>
Date: Saturday, March 16, 2013, 9:14 PM

What would stand up to the heat off the exhaust and how expensive would it be?
Later, JR


----- Original Message ----- From: "Gary Moore" <tdrinkr at yahoo.com>
To: <virtualvairs at corvair.org>; "Ron" <ronh at owt.com>
Sent: Saturday, March 16, 2013 4:42 PM
Subject: Re: <VV> alternate fans


The articles stated that fans could not overcome the back pressure, the force of 
the fan reflected off the engine surface and back up. My question would small 
fans (3 to 4 inch computer type fans) fitted in rectangular frames added inside 
the bottom shrouds near the shroud's exhaust doors (aimed out), create a vacuum 
and aid drawing more air from the top fan through/around the engine.

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