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Re: [Fot] Electric Fan Location

To: A Daniel Cronin <adcronin@ameritech.net>
Subject: Re: [Fot] Electric Fan Location
From: Bill Babcock <Billb@bnj.com>
Date: Fri, 12 Sep 2008 19:38:29 -0700
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It doesn't matter too much since the fan is only effective at low  
speed.  It's a very good idea to mount the fan behind the radiator,  
since installing it in front blocks airflow too much (as I found to my  
dismay). I wouldn't use the plastic "through the radiator" mounts  
since they can eventually cause a leak. the plastic can't abrade the  
metal, but dust that gets between the metal and the plastic can.

A lot of the triumphs that exclusively race have no fan, or a small  
fan to keep the temperature in bounds on the grid.

On Sep 12, 2008, at 6:18 PM, A Daniel Cronin wrote:

> Listers:
> Am rebuilding a 55 TR2 and will be installing a Flex a Lite 1050  
> cfm, 9 amp load, 10 blade, 12" diam. electric fan with variable  
> speed control kit and manual on/off switch on an aluminum radiator  
> without crank hole.  Radiator effective area is 11 1/2" wide x 18"  
> high x 2 1/2" deep.  Stock Tr2-3b radiators were about 17" x12" x3"  
> and the crank hole was up from the bottom of the fins about 6 1/2"  
> and the stock fan appears to span the entire width of the stock  
> radiator, some 13" diameter, so it is pulling air into the bottom  
> 2/3's of the radiator.  The grill opening on the 2 starts just under  
> the crank hole and has an opening at the radiator face of about 11"  
> high and averages 13" in width.  It appears as if the fan is pulling  
> half its air from under the front apron lower skirt (the 6 1/2"  
> below the crank hole) and the other half from the lower portion of  
> the grill opening.  It then seems that the "ram" effect of air being  
> forced thru the upper 70% of the radiator when under way completes  
> the cooling tasks.
>
> Given that the fan I will be using is slim enough to be positioned  
> at any height behind the radiator (puller) without interference from  
> the cross brace connecting the spring towers, where would you think  
> would be the most desirable location to install the fan.
>
> Planning & Development Services
> A. Daniel Cronin
> 248 761-2673
> _______________________________________________
> http://www.team.net/donate.html
>
> Fot mailing list
> Fot@autox.team.net
> http://autox.team.net/mailman/listinfo/fot
>

Bill Babcock
Babcock & Jenkins
Billb@bnj.com
503.936.7660
www.bnj.com

Editor
Ke Nalu e-Magazine
Paddlesurfing's Web Journal

Bill@kenalu.com
www.kenalu.com
blog: www.ponohouse.com/ponoblog


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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; ">It doesn't matter too much =
since the fan is only effective at low speed. &nbsp;It's a very good =
idea to mount the fan behind the radiator, since installing it in front =
blocks airflow too much (as I found to my dismay). I wouldn't use the =
plastic "through the radiator" mounts since they can eventually cause a =
leak. the plastic can't abrade the metal, but dust that gets between the =
metal and the plastic can.&nbsp;<div><br></div><div>A lot of the =
triumphs that exclusively race have no fan, or a small fan to keep the =
temperature in bounds on the grid.&nbsp;</div><div><br><div><div>On Sep =
12, 2008, at 6:18 PM, A Daniel Cronin wrote:</div><br =
class=3D"Apple-interchange-newline"><blockquote type=3D"cite"><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; color: =
rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: =
normal; font-variant: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: auto; text-indent: =
0px; text-transform: none; white-space: normal; widows: 2; word-spacing: =
0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div><div style=3D"font-family: =
arial, helvetica, sans-serif; font-size: 14pt; margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "></div><div style=3D"margin-top: 0px; margin-right: =
0px; margin-bottom: 0px; margin-left: 0px; ">Listers:</div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; ">Am rebuilding a 55 TR2 and will be installing a Flex =
a Lite 1050 cfm, 9 amp load, 10 blade, 12" diam. electric fan with =
variable speed control kit and manual on/off switch on an aluminum =
radiator without crank hole.&nbsp; Radiator effective area is 11 1/2" =
wide x 18" high x 2 1/2" deep.&nbsp; Stock Tr2-3b radiators were about =
17" x12" x3" and the crank hole was up from the bottom of the fins about =
6 1/2" and the stock fan appears to span the entire&nbsp;width of the =
stock radiator, some 13" diameter, so it is pulling air into the bottom =
2/3's of the radiator.&nbsp; The grill opening on the 2 starts just =
under the crank hole and has an opening at the radiator face of about =
11" high and averages 13" in width.&nbsp; It appears as if the fan is =
pulling&nbsp;half its&nbsp;air from under the front apron lower skirt =
(the 6 1/2" below the crank hole) and the other half from the lower =
portion of the grill opening.&nbsp; It then seems that the "ram" effect =
of air being forced thru the upper 70% of the radiator when under way =
completes the cooling tasks.</div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; =
">&nbsp;</div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; ">Given that the fan I will be =
using is slim enough to be positioned at any height behind the radiator =
(puller) without interference from the cross brace connecting the spring =
towers, where would you think would be the most desirable =
location&nbsp;to install the fan.<br>&nbsp;</div>Planning &amp; =
Development Services<br>A. Daniel Cronin<br>248 761-2673<div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; =
"></div></div>_______________________________________________<br><a =
href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.html</=
a><br><br>Fot mailing list<br><a =
href=3D"mailto:Fot@autox.team.net";>Fot@autox.team.net</a><br><a =
href=3D"http://autox.team.net/mailman/listinfo/fot";>http://autox.team.net/=
mailman/listinfo/fot</a><br><br></div></span></blockquote></div><br><div =
apple-content-edited=3D"true"> <span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 14px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; =
white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: =
0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 14px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; =
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><span class=3D"Apple-style-span" =
style=3D"border-collapse: separate; color: rgb(0, 0, 0); font-family: =
Helvetica; font-size: 14px; font-style: normal; font-variant: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; =
widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; =
-webkit-border-vertical-spacing: 0px; =
-webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: =
auto; -webkit-text-stroke-width: 0px; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><div><span class=3D"Apple-style-span" style=3D"color:=
 rgb(118, 15, 79); font-size: 16px; ">Bill Babcock</span></div><div><div =
style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; "><div style=3D"word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space; "><div>Babcock &amp; Jenkins</div><div><a =
href=3D"mailto:Billb@bnj.com";>Billb@bnj.com</a></div><div>503.936.7660</di=
v><div><a href=3D"http://www.bnj.com";>www.bnj.com</a></div><div><br =
class=3D"webkit-block-placeholder"></div><div><div><font =
class=3D"Apple-style-span" color=3D"#010000">Editor</font></div><div><font=
 class=3D"Apple-style-span" color=3D"#010000">Ke Nalu =
e-Magazine</font></div><div><font class=3D"Apple-style-span" =
color=3D"#010000"><font class=3D"Apple-style-span" size=3D"3"><span =
class=3D"Apple-style-span" style=3D"font-size: 12px; =
"><i>Paddlesurfing's Web =
Journal</i></span></font></font></div><div><font =
class=3D"Apple-style-span" color=3D"#010000" size=3D"3"><span =
class=3D"Apple-style-span" style=3D"font-size: 12px; "><i><br =
class=3D"webkit-block-placeholder"></i></span></font></div><div><a =
href=3D"mailto:Bill@kenalu.com";>Bill@kenalu.com</a></div><div><a =
href=3D"http://www.kenalu.com";>www.kenalu.com</a></div><div>blog: <a =
href=3D"http://www.ponohouse.com/ponoblog";>www.ponohouse.com/ponoblog</a><=
/div></div></div></div></div></div></span></div></span></div></span> =
</div><br></div></body></html>=

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