<VV> Fw: Air distribution on cylinders - stock Corvair

[BBRT]

----- Original Message ----- 
From: "BBRT" <chsadek at adelphia.net>
To: <fastvair at yahoogroups.com>
Sent: Friday, August 12, 2005 10:02 PM
Subject: Air distribution on cylinders - stock Corvair


>I do not believe the air distribution is equal on all cylinders. The stock 
>type of fan, the direction of air flow, the crudeness of the shroud shape 
>lacking internal flow vanes (like a Porsche) lead me to believe the 
>cylinders and heads do not cool evenly.  The direction of flow will dictate 
>if R and L side heads mirror each other, especially if direction of  fan 
>rotation are different. I haven't seen the SAE papers. Perhaps Bob could 
>comment.  The average on each side may be similar, but I expect exacting 
>measurements would show differences. I would like to see both sides 
>measured in the upcoming fan tests. Matter of fact, I'd love to see 
>individual cylinder tests.
>
> Chuck S
>
>
> ----- Original Message ----- 
> From: "Steven R. Marti" <srmarti at netzero.net>
> To: <fastvair at yahoogroups.com>
> Sent: Friday, August 12, 2005 9:39 PM
> Subject: RE: RE: [fastvair] Re: <VV> Has anyone on the list BOUGHT Tom's 
> cooling system
>
>
>> Might not need both CHTs, but it would be nice to know the cooling
>> distribution was even on both sides.  Can't think of a reason why it
>> wouldn't be the same for both sides but without knowing more about the
>> design, can't entirely rule out a surprise of some funny air flow 
>> behavior.
>>
>>
>>
>> Steve
>>
>>). The extra 2 thermocouples
>>> would meaure the temperature at fan inlet and in the air discharge path
>>> under one of the heads (inside the lower shroud).  (If you have more
>>> channels, take both sides).  Having this information will give you
>>> delta T across the engine...
>>>
>> Good idea but I can do both since I did not waste time relating all the
>> capability of the logger. It also has several rpm channels in addition to
>> the analog channels.
>>
>> Probably could be as follows:
>>
>>  RPM rpm channel #1
>>  MAP Analog # 1 bar map sensor1
>>  CHT-left Analog #2 type K t/c
>>  CHT-right Analog #3 type K t/c
>>  Oil temp Analog #4 GM temp sensor or type K
>>  Plenum pres Analog #5 1 psi/28 in H2O sensor
>>  TPS Analog #6 0-3 in linear pot
>>  Fan temp at
>>  inlet Analog #7 GM temp sensor
>>  Fan out temp Analog #8 GM temp sensor
>>
>> I can get ambient with my Omega meter and monitor it for duration of test
>> as any changes should be minimal.
>>
>> Oil temp may have to be type K since not sure the GM sensor is good much
>> past 300 deg since it is semiconductor junction. I think the "official"
>> limit is about 300 deg.
>>
>> Not sure if wwe need both heads with CHT and it may depend how easy it is
>> to do both heads. Comments???
>>
>> I can set sampling rate fairly slow for temp channels as faster for those
>> that can change fast like map adn tps subject to the limit of available
>> memory in logger which uses PCMCIA cards. Still have some 1 Meg ones.
>>
>> regards,
>>
>> frank
>