[TR] Electric Fan Location

[dorpaul]

Dan,
I know nothing from experience, however, it seems that I have read that a 
'puller' operates best when it's 1" back from the radiator.
Paul

----- Original Message ----- 
From: "A Daniel Cronin" <adcronin at ameritech.net>
To: "Friends of Triumph" <fot at autox.team.net>; "Triumph List" 
<triumphs at autox.team.net>
Sent: Friday, September 12, 2008 9:18 PM
Subject: [TR] Electric Fan Location


> 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
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