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TR2/3/3A TR 3A Cooling Fan Conversion

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RonR

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What is the groups experience with the Moss fan conversion kit/hub for use with the plastic yellow fans?

If you installed this kit, which fan did you use?

Thanks,
Ron
 
Does Moss still offer this? Didn't see it in recent catalogs and thought they may have dropped it when the yellow fan became NLA (as a new item).

I have used the yellow fan on a TR4 by reversing it and adding a spacer. Then I got a tropical fan for the 4 and was going to move the yellow fan to the TR3A (looked like that set-up would work) but then I found a 2nd tropical fan and the plastic fan went on the shelf.
 
IMO -- you should be able to find a decent tropical fan for less than that adaptor and get much improved air at idle while retaining a stock (or original option) look.
 
Just my opinion, but that's an awful lot of money to add the plastic fan. I forget who on this forum recommended it, but there is a BMW plastic fan that is higher efficiency and a pretty easy bolt on option without interference issues - and much much less expensive too. Or source the tropical fan option as Geo says - they don't come up often but they can be had for less than the cost of that adaptor when they are available.
 
Geo,

Where might one find a tropical fan?
Would the reproduction of the Texas Cooler Fan now sold by Moss fit a TR3?
 
Mentioning it here is a good start (that's how I found both of mine) otherwise keep an eye on eBay.

If the cooling is more important than the look I can set you up with a plastic fan & spacer. I painted the fan black so it didn't look too obvious -- in fact I would have used it on my TR3A except I found I would have had to pull the nose and radiator to mount it -- I was able to replace the stock fan with the Tropical with the radiator in place.
 
Geo,

Yes, cooling is more important. If we make it to Breckenridge in August, we will be driving across hot humid Kansas.

Is the spacer from a TR4?
What car is the fan from?

Thanks.
Ron
 
The fan is from a TR6, the spacer I made from a plastic (acrylic?) cutting board about 3/8" thick. I then mounted the fan backwards using the spacer. You almost have to set it up for a specific car as I have seen some where the fan could be used right way 'round, others where it was reversed for clearance.
 
RonR
I was going to use the Moss plastic fan and it took me years to convince myself to buy one. I wanted to keep the car period. (Still using a generator too). When I went to our local Triumph guy to get a fan he suggested using a GT6 fan. It is metal like the 3's fan and has a larger pitch and 5 blades. Best thing I ever did! Never a problem with overheating and no one has ever noticed even being judged in a car show.
 

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Geo,

Wouldn't mounting a fan backwards push air from the enginge compartment through the radiator and out the grill? Or does a TR6 engine rotate the opposite way oas a TR3?

Jedi, I have found a GT6 fan on ebay but it is an 8-blade yellow plastic fan. Does anyone know if this is a simple bolt-on replacement to the origina, TR3 fan?

Thanks
Ron
 
I do not recall doing anything special other then bolting it to the TR3 fan extension. Now this was 15+ years ago.
 
RonR said:
Wouldn't mounting a fan backwards push air from the enginge compartment through the radiator and out the grill?
Click to expand...
Nope, no more than putting a nut on backwards makes it turn the other direction.
 
Since a fan blade is not in a flat plane, like a nut, but rather pitched (or angled) to direct air a single direction depending on the rotation of the fan, wouldn't reversing the fan be no different than changing the direction on a ceiling fan to direct air down from the ceiling instead of up towards the celiling?

Ron
 
No, because the reversed radiator fan will still be turning the same direction. The ceiling fan equivalent would be turning the blades upside down.

And the threads in a nut are not in a flat plane.
 
I finally got it. The fan blades aer symetrical along the centerline of their lineal axis, making the air flow the same as long as the rotational direction is the same.

Thanks.
Ron
 
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