<div style="color:black;font: 10pt arial;">I had to add a separate 30 amp circuit for my fan & I upgraded to a higher capacity alternator. I also discovered that having very good electrical connections is important. I had some high resistance connections initially that caused some issues but it was caught soon enough to avoid a meltdown.
<div>Gary<br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: Patrick & Caroline Quinn <p_cquinn@tpg.com.au><br>
To: warthodson <warthodson@aol.com>; healeys <healeys@autox.team.net><br>
Sent: Fri, Jan 24, 2020 4:40 pm<br>
Subject: RE: [Healeys] Curved or Straight<br>
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<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;">Thank you Gary</span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;">I see that Spal makes both straight and curved bladed fans.</span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;">Another thing I need to consider is the 1948 Lucas electrical circuitry and whether it will cope with anything else.</span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;">Hoo Roo</span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;"> </span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;">Patrick Quinn</span></div>
<div class="yiv6960483191MsoNormal"><span style="font-size:11.0pt;"> </span></div>
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<div class="yiv6960483191MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;">From:</span></b><span lang="EN-US" style="font-size:10.0pt;"> warthodson@aol.com [mailto:warthodson@aol.com] <br clear="none"><b>Sent:</b> Saturday, 25 January 2020 9:00 AM<br clear="none"><b>To:</b> p_cquinn@tpg.com.au; healeys@autox.team.net<br clear="none"><b>Subject:</b> Re: [Healeys] Curved or Straight</span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;">There are many things that affect the selection of the blade design besides efficiency. Such as, strength, cost of manufacturing, noise generation, desired CFM at a specific resistance, (pressure drop), marketability to name a few. </span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;"> </span></div>
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<div class="yiv6960483191MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;">I have a "Spal" brand of fan. Because it appeared to be high quality, was thin enough to fit in front of my radiator & produced a relatively high CFM at about .25" pressure drop.</span></div>
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<div class="yiv6960483191MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;">Gary Hodson</span></div>
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<div class="yiv6960483191MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:10.0pt;">-----Original Message-----<br clear="none">From: Patrick & Caroline Quinn <p_cquinn@tpg.com.au><br clear="none">To: healeys <healeys@autox.team.net><br clear="none">Sent: Fri, Jan 24, 2020 3:26 pm<br clear="none">Subject: [Healeys] Curved or Straight</span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Hello</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Once again I am about to investigate the engine cooling of the Healey Duncan. Nothing highly unusual with it in that it’s a Riley 2.4 litre engine and unpressurised.</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;"> </span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Part of the process is to replace the existing Kenlowe electric fan with a more modern unit. The Kenlow sits over an inch from the radiator surface while a modern unit should only be a few millimetres. Of course it was never fitted with an electric fan when new, but it’s simply not coping with the warmer Australian climate.</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;"> </span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">I will be doing all sorts of wonderful things like removing the cylinder head to replace the cooling tube between number two and three combustion chamber, refurbishing the radiator, rodding the block etc etc.</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;"> </span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">The question that’s on my mind concerns whether to install an electric fan with curved or straight blades. Australian manufacturer Davies Craig says that straight blades are best, but they would say that as that’s what they make.</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Anyone undertaken any research as to what’s the most efficient?</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Hoo Roo</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Patrick Quinn</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Blue Mountains, Australia</span><span style="font-size:10.0pt;"></span></div>
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<div class="yiv6960483191MsoNormal"><span style="font-size:10.0pt;color:black;">Where it’s raining again - wonderful</span><span style="font-size:10.0pt;"></span></div>
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