<VV> How about the cooling fans from these engines?

Tue Jul 30 01:14:01 EDT 2013

 Where's Jim? Can we get him to weigh in on this?

John Roberts

-----Original Message-----
From: BBRT <chsadek at comcast.net>
To: mfrancis <mfrancis at wi.rr.com>
Cc: virtualvairs <virtualvairs at corvair.org>
Sent: Mon, Jul 29, 2013 9:13 pm
Subject: Re: <VV> How about the cooling fans from these engines?

Jim Schardt uses a horizontal Corvair fan, driven by a right angle belt 
drive.. with four Rochester carbs, was Mid West Champion, and produces 
somewhere around 250 hp... Seems to work ok for him..
----- Original Message ----- 
From: <jvhroberts at aol.com>
To: <mfrancis at wi.rr.com>
Cc: <virtualvairs at corvair.org>
Sent: Monday, July 29, 2013 7:47 PM
Subject: Re: <VV> How about the cooling fans from these engines?

>
> Also, we know the Corvair fan is horribly inefficient, and for high perf 
> apps, it just isn't enough. Ask a turbo owner or anyone who really races 
> these things, and they'll all tell you, the stocker just isn't up to the 
> job.
>
> Hence my reason for suggesting something proven from another application.
>
>
>
> John Roberts
>
>
>
>
> -----Original Message-----
> From: Mel Francis <mfrancis at wi.rr.com>
> To: jvhroberts <jvhroberts at aol.com>
> Cc: virtualvairs <virtualvairs at corvair.org>
> Sent: Mon, Jul 29, 2013 4:57 pm
> Subject: Re: <VV> How about the cooling fans from these engines?
>
>
>
> For the money involved, there's no better fan than the stock Corvair fan 
> and that's not an assumption with no basis.
> If you want to spend thousands of dollars developing a cast adapter for an 
> industrial vane-axial fan to a Corvair engine,
> go for it! You will have achieved the same thing as the existing 
> Porsche-style vertical fan setup and that costs hundreds.
>
> In its horizontal location, the Corvair fan supplies high pressure air 
> outwardly, directly to the curved
> downturn in the stock upper shroud. This downturn is positioned exactly 
> where it needs to be, in order to direct the
> cooling airflow precisely into the heads at their hottest point, the 
> exhaust valve seat area in the castings.
>
> Mel
>
> ----- Original Message ----- 
>
> From:   jvhroberts at aol.com
>
> To: mfrancis at wi.rr.com ; ronh at owt.com
>
> Cc: virtualvairs at corvair.org
>
> Sent: Monday, July 29, 2013 3:40 PM
>
> Subject: Re: <VV> How about the   cooling fans from these engines?
>
>
>
>
> Again, an assumption with no basis. The main reason I posted these is 
> they are, without a doubt, a LOT more efficient than the Corvair blower 
> simply   because these engines are meant to deliver their rated output 
> continuously.   And that number is WAY higher than the continuous rating 
> of a Corvair engine!   And why stick with the vertical fan axis? This one 
> can be driven without the   twisted belt.
>
>
>
>
>
> John Roberts
>
>
>
>
>
>
>
> -----Original   Message-----
> From: Mel Francis <mfrancis at wi.rr.com>
> To: Ron   <ronh at owt.com>
> Cc: virtualvairs   <virtualvairs at corvair.org>
> Sent: Mon, Jul 29, 2013 3:07   pm
> Subject: Re: <VV> How about the cooling fans from these   engines?
>
>
> Even if these fans were available for $5 apiece, the main problem would be
> their weight, or rotating mass. GM went to great lengths to develop a
> lighter fan, the magnesium version, that wouldn't cause the Corvair's 
> unique
> twisted-belt system to double up on itself, as badly as with the earlier
> all-steel versions, during quick downshifts.
>
> Mel
>
>
> ----- Original Message ----- 
> From: "Ron" <ronh at owt.com>
> To: <fastvair at yahoogroups.com>; <virtualvairs at corvair.org>;
> <jvhroberts at aol.com>
> Sent: Monday, July 29, 2013 1:55 PM
> Subject: Re: <VV> How about the cooling fans from these engines?
>
>
>> Very nice but there's one important item missing, price!  I assume that
>> they
>> are very expensive.
>> RonH
>>
>> ----- Original Message ----- 
>> From: <jvhroberts at aol.com>
>> To: <fastvair at yahoogroups.com>; <virtualvairs at corvair.org>
>> Sent: Monday, July 29, 2013 6:16 AM
>> Subject: <VV> How about the cooling fans from these engines?
>>
>>
>>> Note, they turn CCW. And, being continuous duty, I am gathering they 
>>> have
>>> to be efficient, as these engines need to operate for thousands of hours
>>> at full power.
>>>
>>> http://www.deutz.com/live_deutz_products/file/8a85818a11c1035d0111dfea87260238.de.0/obj_doku-33697-001_fl-912-w_ind_en.pdf
>>> http://www.deutz.com/live_deutz_products/file/8a85818a11c1035d0111e01be73f0291.de.0/datenblatt+914+bau+en+0603.pdf
>>>
>>>
>>>
>>>
>>>
>>> John Roberts
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