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Harry Ferguson Tractors Discussion Forum
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Reverse fan

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Dave Tointon

06-19-2006 03:34:18




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Gentlemen,
My TE20 Fregi is a working tractor. Its the only one I have and is called upon to perform all manner of jobs on a small property in northern Australia. The warm air blowing on the operator from the fan may be rather pleasant on an English field on a crisp autumn day however at my place where the temperature is often 35-40 degrees and 90% humidity its just bl..dy hot. If I turn the fan around so it blows rather than sucks through the radiator will it significantly reduce the efficiency of the cooling system. I very much appreciate the advice available on this site.
Regards
Dave

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woodache

06-19-2006 08:14:10




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 Most Forlklift fans blow Re: Reverse fan in reply to Dave Tointon, 06-19-2006 03:34:18  
Now if you find an old massey forklift it will blow.
I suspect that if go to a forklift junk yard you can find one that will fit as many of forklift also have contenential engines in them. If blowing try to find one that has more blades as blowing doesent cool as well. And you will be pushing hot air from the engine through the raditor. Also harder to keep the chaff and dust out especialy the the low slung utility tractors. Any oil that drips from the engine will agravate the problem as all of it goes on to the raditor. I know because I run forklifts in dirty dusty conditions and have to wash radaitors on a daily basis.

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Dell (WA)

06-19-2006 08:01:54




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 03:34:18  
Dave..... ....yer Fergie's original design competition, the "Ford 9N with Ferguson System", came with "6-blade pusher" fan for tropical operator comfort. Which could readily be exchanged for a "4-blade sucker" fan for cold weather comfort. There's a reason most radiator fans are "suckers", the fan shroud makes them more efficent..... ...Dell



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John (UK)

06-19-2006 06:02:36




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 03:34:18  
You can reverse the fan but it wont blow through the radiator, it will reduce the air flow though. I suspect that it would reduce it too much for the conditions you are working in. If it is so uncomfortable perhaps you could fit a couple of deflectors, one either side to send the air flow away from the operator.



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Dave Tointon

06-19-2006 05:14:06




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 03:34:18  
You'd have to cut blades off and weld them on the other way, not a big job. Just concerned that there wouldn't be much cooling airflow over engine
Dave



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Jerry/MT

06-19-2006 11:58:01




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 05:14:06  
Respectfully, I would never recommend cutting a fan blade and welding it back on for any reason. If welding was a good way to attach fan blades, you'd see a lot more made that way. They are attached the way they are to preclude a failure from fatigue. In my opinion, your recommendation could prove to be a safety problem with one or more blades coming off and causing a serious hazzard. The best solution is to buy a "reverse flow" fan. With the shroud design that's on the tractor, it will not be as effective as a "sucker fan" but it will at least be safe.

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Jim in OH

06-19-2006 12:15:20




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 Re: Reverse fan in reply to Jerry/MT, 06-19-2006 11:58:01  
Good point on the welding... tractor pullers are often required to have fan side shields even with stock fans for as little as 10% over stock rpm... Jim



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Jim in OH

06-19-2006 05:39:51




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 05:14:06  
YOu could cut them off, rotate them end to end and weld them back on at the uncut end, that would work, but just cutting them off and turning them over won't do it either.. no different then turning the whole fan over... I think that you would be better off finding an application with opposite rotation, take that fan and adapt it to your application... That would also save your fan for later... As for cooling, I don't think that there is enough cooling of the block by air to make any difference. What I do see as a problem is the heat from the manifold to the gas tank. On very hot days and working hard, it can already boil the gas, and removing air flow can only make this worse... Jim

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Jim in OH

06-19-2006 04:57:58




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 Re: Reverse fan in reply to Dave Tointon, 06-19-2006 03:34:18  
Turning the fan around will not reverse the direction of air flow (It is the same concept as turning a right hand nut over to make it a left hand nut). However, your idea is not new. There were aftermarket tractor fans made that reversed the flow although I have never seen one for a Ferguson. There were some for Fords and I am sure that you could take fans of opposite rotation and adapt them.. Jim

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