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Re: [Healeys] Stock Cooling Fan CFM

To: Perry via Healeys <healeys@autox.team.net>, Perry <healeyguy@aol.com>
Subject: Re: [Healeys] Stock Cooling Fan CFM
From: WILLIAM B LAWRENCE <ynotink@msn.com>
Date: Thu, 25 Jun 2020 15:21:11 +0000
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Thread-topic: [Healeys] Stock Cooling Fan CFM
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Sounds more realistic. And remember that while the fan is moving that air i=
t is soaking up power. I much prefer my electric fans.

Bill Lawrence
BN1 #554
________________________________
From: Healeys <healeys-bounces@autox.team.net> on behalf of Perry via Heale=
ys <healeys@autox.team.net>
Sent: Thursday, June 25, 2020 2:00 PM
To: healeys@autox.team.net <healeys@autox.team.net>
Subject: [Healeys] Stock Cooling Fan CFM


Listers

About a month ago I posted to the list looking for a verification of a CFM =
calculation of the  stock 4 blade fan on a 100.

Bill Atterbury responded that my numbers looked like they were off by a fac=
tor of 10. Bill was correct.

After revisiting the question it looks like the CFM should be approximately=
:

Fan specs:           Pitch=3D 1-1/8 inch

Overall diameter=3D14.75 inches

CFM @ 700 RPM =3D310 CFM

CFM @1000 RPM =3D444 CFM

CFM @4000 RMP=3D 1776 CFM



So if you wonder why a small 12 inch electric fan that puts out 1250 CFM (F=
lexALite#111) seems to cool the 100 a lot better at idle

this may help to explain it, unless of course I have made another mistake.

Thanks

Perry



Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=3D550986> for Window=
s 10



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<div>Sounds more realistic. And remember that while the fan is moving that =
air it is soaking up power. I much prefer my electric fans.</div>
<div><br>
</div>
<div>Bill Lawrence&nbsp;</div>
<div>BN1 #554</div>
<hr style=3D"display:inline-block;width:98%" tabindex=3D"-1">
<div id=3D"divRplyFwdMsg" dir=3D"ltr"><font face=3D"Calibri, sans-serif" st=
yle=3D"font-size:11pt" color=3D"#000000"><b>From:</b> Healeys &lt;healeys-b=
ounces@autox.team.net&gt; on behalf of Perry via Healeys &lt;healeys@autox.=
team.net&gt;<br>
<b>Sent:</b> Thursday, June 25, 2020 2:00 PM<br>
<b>To:</b> healeys@autox.team.net &lt;healeys@autox.team.net&gt;<br>
<b>Subject:</b> [Healeys] Stock Cooling Fan CFM</font>
<div>&nbsp;</div>
</div>
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<p class=3D"x_MsoNormal">Listers</p>
<p class=3D"x_MsoNormal">About a month ago I posted to the list looking for=
 a verification of a CFM calculation of the &nbsp;stock 4 blade fan on a 10=
0.&nbsp; &nbsp;</p>
<p class=3D"x_MsoNormal">Bill Atterbury responded that my numbers looked li=
ke they were off by a factor of 10. Bill was correct.
</p>
<p class=3D"x_MsoNormal">After revisiting the question it looks like the CF=
M should be approximately:</p>
<p class=3D"x_MsoNormal">Fan specs: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp; Pitch=3D 1-1/8 inch </p>
<p class=3D"x_MsoNormal" style=3D"margin-left:.5in; text-indent:.5in">Overa=
ll diameter=3D14.75 inches
</p>
<p class=3D"x_MsoNormal">CFM @ 700 RPM =3D310 CFM</p>
<p class=3D"x_MsoNormal">CFM @1000 RPM =3D444 CFM</p>
<p class=3D"x_MsoNormal">CFM @4000 RMP=3D 1776 CFM</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">So if you wonder why a small 12 inch electric fan =
that puts out 1250 CFM (FlexALite#111) seems to cool the 100 a lot better a=
t idle</p>
<p class=3D"x_MsoNormal">this may help to explain it, unless of course I ha=
ve made another mistake.
</p>
<p class=3D"x_MsoNormal">Thanks</p>
<p class=3D"x_MsoNormal">Perry</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
<p class=3D"x_MsoNormal">Sent from <a href=3D"https://go.microsoft.com/fwli=
nk/?LinkId=3D550986">
Mail</a> for Windows 10</p>
<p class=3D"x_MsoNormal">&nbsp;</p>
</div>
</div>
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