[TR] One last Radiator question

[Al Salvatore]

If the yellow fan works that good, just think of the possiblities of the red 
TR6 fan with 13 blades.

:)

Al

----- Original Message ----- 
From: "THOMAS FANSHER" <tfansher at comcast.net>
To: <terryrs at comcast.net>; "list Triumph" <triumphs at autox.team.net>
Sent: Saturday, August 07, 2010 3:10 PM
Subject: Re: [TR] One last Radiator question


> Terry, I don't think that a new radiator by itself will allow a TR3 to not 
> overheat in many situations (but maybe not New Hampshire). In Florida I've 
> had to add electric pushers to both TR3's and the TR4 (1962) with the 
> mechanical fan with four blades. There are six bladed fans around which 
> have a much better pitch and 2/3's more blades ;^) than the original ones. 
> When I redid "my" TR3 four years ago I opted to do away with the 
> mechanical fan and added a puller, it works great. On the "new" TR3 that I 
> just finished all was good with everything stock until the weather got 
> over ninety and there was stop and go traffic. The stock fan will never 
> move enough air through any radiator to provide adequate cooling in 
> "adverse conditions". Two weeks ago I added a pusher fan with relay and a 
> manual switch - an old once speed wiper switch - mounted just over my 
> right knee to the dash support. I turn it on when the temp has reached 185 
> and the needle just stays there. I do have the shroud in place and the fan 
> (11 inch I think) takes up all the exposed area of the radiator. I think 
> it works well. If it hadn't, I'd be pulling the cowling and probably 
> trying a six blade fan. A buddy, also in Central Florida,  replaced his 
> four blade with the yellow TR6 fan a few years ago and is REALLY happy 
> with that result. He had 3/16 " removed from the front and rear of the 
> extension, thereby gaining 3/8" of room and mounted the fan front facing 
> as on the TR6.  He says it sucks up leaves when they are on the 
> driveway...and I have a yellow fan --just in case. But so far in 96+ 
> degree muggy, high humidity Florida, I'm fine with what I've done.  Again, 
> I think that in certain parts of the world the stock would be adequate. 
> I've also noticed that the horizontal plate of the cowling blocks off the 
> portion of the radiator below the crank hole - another poor design and 
> wasted space, no matter what the material of the radiator is made 
> from...just my two cents worth.....(a lot of words for two cents ;^)  )
> Tom
> 60 TR3A
> 61 TR3A
> 62 TR4
> 73 Stag
> ----- Original Message ----- 
> From: <terryrs at comcast.net>
> To: "list Triumph" <triumphs at autox.team.net>
> Sent: Saturday, August 07, 2010 11:09 AM
> Subject: [TR] One last Radiator question
>
>
>>I think the upshot of the recent thoughts comparing aluminum to copper 
>>radiators is that it is about a wash.  There are more fins in the aluminum 
>>radiator to make up for the poorer surface heat exchange.  Then someone 
>>else made the point that it would take more power to push the air through 
>>the fins.
>>
>> Question:  if adopting an aluminum radiator, would the stock fan system 
>> be sufficient to suck the air through the radiator at idle, or would an 
>> electric fan conversion be pretty much necessary?  ...Am wondering if the 
>> move of Macks, Petes and the like to aluminum might be cojoined to a 
>> simultaneous move to electric fans as an enabler?
>>
>> Thoughts?
>>
>> Terry Smith, '59 TR3A  TS 58667
>> New Hampshire
>
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