Bryan Vandiver wrote:
>
> John,
>
> I had to get some spacers to get my bugeye metal fan to work on my 1275, so
> that the fan would clear the oil breather on the timing cover. I'm still using
> the orginal vertical flow radiator. As far as optimal flow goes, I would
>suspect
> that the distance to the radiator is not that critical, as long as the fan
> shroud is still in place, and the fan blades are within the shroud (about 1
>to
> 3" from the radiator).
>
> regards - Bryan
>
> >To: "'Majordomo, Spridgets List'" <spridgets@autox.team.net>
> >Subject: Radiator Fan Spacer
> >MIME-Version: 1.0
> >
> >I read somewhere but now forgot, there is a specification on how far the
> >radiator fan should be from the radiator to achieve maximum air flow through
> >the radiator. Most parts houses sell a "distance piece" of various
> >thickness that move the fan closer to the radiator depending upon the
> >thickness of the spacer. How close should the fan be to the radiator. I
> >have an engine driven fan on an AH Sprite using a vertical flow radiator.
> >
> >Regards
> >John Gronberg
> >Siemens Building Technologies, Inc.
> >Buffalo Grove, Illinois 60089-4513
> >Phone: 847-215-1050 ex 5092
> >Fax: 847-229-3658
> >Email: john.gronberg@us.landisstaefa.com
> >
> >
My understanding of fan placement is that the fan should not be
completely inside the shroud and that it needs to have about 1/8 of the
fans width in the clear behind the shroud to work correctly. Can someone
remember the reasoning behind that. I was told the reason a long time
ago, but only the measurement part comes back to mind.
Mark Snowdon
Greensboro NC
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