<VV> RE: acid resistance and fan material

[Steven R. Marti]

If the only known problem is reaction with acid fumes from the battery, a
rather obvious solution comes to mind.  Relocate the battery or otherwise
isolate it to prevent fumes from possibly being sucked into the fan.

Steve
 
-----Original Message: 7
Date: Sun, 10 Jul 2005 08:50:04 -0400
From: Fran & Mary Marchand <franmary at adelphia.net>
Subject: <VV> RE: Corvair Fan (Kent Sullivan): Material Selection
To: virtualvairs at corvair.org
Message-ID: <42D1197C.4070801 at adelphia.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Kent,  My company had a "special" project to replace Delrin, which was 
being eaten by a mild acid.  We went through an extensive (read as 
multi-million $ DoD spending) material selection, design, manufacture 
and test process.  We finally settled on PEEK (polyether-ether-ketone) 
for the part.  PEEK is a very high temperature material, extremely inert 
and very strong.  It comes in many flavors, including fiberglass and 
carbon reinforcements.  Its one drawback is that it is expensive as a 
raw material.  For building a fan, a major cost will be in the mold 
design/manufacture process.  The material cost may be secondary if the 
quantities are fairly low.  PEEK raw material is made by Victrex in the 
UK (http://www.victrex.com), but is widely availble around this country.

Fran

>>If all goes well, we would like to make the production fans out of 
>>something much lighter than aluminum; perhaps a modern plastic. (But it
needs to be
>>one that doesn't react with battery acid fumes. We all know the story of 
>>the prototype Delrin fan creating formaldehyde gas!) There will be a
>>price/performance decision to make.
>>    
>>




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Message: 8
Date: Sun, 10 Jul 2005 07:54:31 -0500
From: 4carbcorvair <4carbcorvair at gmail.com>
Subject: <VV> How many oil drains?
To: virtualvairs at corvair.org
Message-ID: <7acc0c0905071005544c5e2d0e at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

How many oil drain plugs are required on a Corvair engine???? The
parts car I tore apart (still have many parts available. :grin: ) had
two extra drains installed by someone... Random... no particular
reason that I could see. Thats 3 drain plugs in te oil pan. Very
strange. ggg

-- 
Ron Tinkham

66 Corsa Convertable, 140, 4sp.
Maine



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Message: 9
Date: Sun, 10 Jul 2005 09:45:38 EDT
From: UltraMonzaWest at aol.com
Subject: Re: <VV> Ole Valve Guide Eater
To: virtualvairs at corvair.org
Message-ID: <7a.7701ef24.30028082 at aol.com>
Content-Type: text/plain; charset="US-ASCII"

In a message dated 7/9/2005 10:40:57 PM Pacific Daylight Time, ronh at owt.com 
writes:

> I stopped in to Steve Goodman's place once with my Ultra Van (having an 
> engine problem) and he wouldn't touch it.
> RonH
> 
****************************************************************************
**
********

Perhaps he was booked solid...........or it was before " Save Willie"  came 
out?? 

WCUH   GGGGGGGGGGGGGGG


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Message: 10
Date: Sun, 10 Jul 2005 14:10:46 +0000
From: djtcz at comcast.net
Subject: <VV> changing the fan
To: virtualvairs at corvair.org
Message-ID:
	
<071020051410.18604.42D12C66000B07C6000048AC2200761064960C9B060B at comcast.net
>
	
Content-Type: text/plain



Message: 7
Date: Sat, 9 Jul 2005 06:38:16 EDT
From: JVHRoberts at aol.com
Subject: Re: <VV> Air vs Water HP
To: Corvair at fnader.com, virtualvairs at corvair.org
Message-ID: <1f2.d524dd0.30010318 at aol.com>
Content-Type: text/plain; charset="US-ASCII"

 
Actually, these do look somewhat like a 911 fan. Now I am getting a clearer

picture, so to speak. Thanks for the links! 
What does the shroud look like for this fan? 
See what you started? <G>
 
John

-----------------------------------
I think "how to hotrod corvair engines"  or the first "turbochargers" books
showed a 911 fan conversion, maybe on some Reeves Callaway's or Alex
Dearborn's stuff

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