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Re: Water Pump/Fan Spacing

To: James Barrett <jamesbrt@mindspring.com>, tigers@autox.team.net
Subject: Re: Water Pump/Fan Spacing
From: Bob Palmer <rpalmer@ames.ucsd.edu>
Date: Fri, 19 Feb 1999 19:09:33 -0800
Jim, et Listers,

I was only gone most of the day and there's quite a stack of mail!!
Regarding the position of the fan, I believe I was told a long time ago
that it should stick about 1/3 the way into the shroud. I think I've read a
posting to this list that it's the other way around, 1/3 out, 2/3 in. My
intuition says it's better the first way, but in any case, a whole lot more
than 1/4" behind the shroud.

Bob

At 07:56 PM 2/19/99 -0500, James Barrett wrote:
>Folks,
>         There has been several messages about the
>spacing for the water pump flange lately.
>
>        I had an unusual problem for a Tiger.
>My fan was too far back from the radiator.
>The blades were outside the fan schroud?.
>I had moved my 351C back 1 1/4".  I also have a
>wider and thicker radiator than normal.  I modified
>the schroud? to give 360 degree coverage and
>added a 7/8" thick spacer between the fan pully and the
>fan.  I am still over an inch away from the radiator
>with the fan blade.  The fan blade now has it's
>rear edge extending out about 1/4" behind the 
>schroud? ( Don't know how to spell that word).
>Hopefully this is close to ideal, as I understand
>that most auto fans actually blow air out
>laterally as well as back.  Seems that by now
>some auto makers would have designed a proper
>aero-dymamic fan.  It is not that hard, even the
>Wright brothers were able to do it.
>
>        This has been a 3 hour mail reading, as
>I was unable to get to the computer for the last few days.
>Over 200 messages,  several received while trying to read 
>the others.  Keep up the good work Tiger folks.  I enjoy the
>mail list.
>
>
>  
>James Barrett Tiger II 351C and others
>
>

Robert L. Palmer
Dept. of AMES, Univ. of Calif., San Diego
rpalmer@ames.ucsd.edu
rpalmer@cts.com

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