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Farmall & IHC Tractors Discussion Forum
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50 series

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hardscrabble

09-20-2005 20:02:39




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I realize these machines don't qualify as antique yet, but I thought IH had a great idea when they introduced the 5088/5288/5488 tractors with the reversed cooling fan. I was disappointed when Case gobbled up IH, and immediately dumped the reverse fan design(along with IH's hydrostatic tractors). Any thoughts on why?? Were there any faults with either of these concepts that you were aware of? Or was Case just "jealous" of IH's better ideas?

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Jon Bottum

09-21-2005 15:08:25




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 Re: 50 series in reply to hardscrabble, 09-20-2005 20:02:39  
Back in 1970, I had a Case 350 [round nose] that had a fully enclosed engine with the reverse fan. This tractor actually ran hotter with the side panels off.



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K.B.-826

09-20-2005 21:13:42




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 Re: 50 series in reply to hardscrabble, 09-20-2005 20:02:39  
In theory, the reverse flow cooling system was a great idea. In the real world, it works no better and has no real advantage over a normal system that is well sealed from debris being pulled in from around the grill screen. I'm sure the reverse flow system cost more to build, too. We have a 786 and a 3088, which are the same exact tractor aside from the reverse flow cooling system on the 3088. Believe it or not, the 786 runs at the middle of the first green bar on the guage under a good load, while the 3088 runs at the top of the first green bar under the same load. The 786 has 5000 more hours on it than the 3088, too! As for the hydros on the big tractors, they finally figured out that noone wants a 100+ horsepower tractor that they can't do tillage work with. A hydro transmisson is very unefficient for this type of work due to slippage. A 18-speed full powershift has almost every advantage of a hydro, while being much tougher, efficient, and slightly cheaper to produce and service. Look at the production numbers for the 3488 Hydro, only about 400 were sold. Don't think that Case didn't use any of IH's good ideas, the basic design of the Magnum transmission/rear end is the same as the 5088 series.

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David Saville

09-20-2005 21:37:38




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 Re: 50 series in reply to K.B.-826, 09-20-2005 21:13:42  
Until last week I would have agree with you that there was no advantage to forward air flow, then I had to clean the rad on my 3488. Just a few minutes to remove the grill and fan and you can pressure wash the rad against the normal air flow. They even have drain holes in the air box for the water to flow away. Anyone who has even tried to clean a rad without removing it will appreciate what I am talking about.

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chadd

09-21-2005 05:13:45




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 Re: 50 series in reply to David Saville, 09-20-2005 21:37:38  
I can't imagine how nice that must be. We have an early build 806 without the swing out cooler. When you blow air out the front, some of the crud from the cooler gets stuck in the radiator. Then when you blow air through the back of the radiator, a portion of the crud from the radiator gets stuck in the oil cooler. You just keep going back and forth for an hour until you either give up or get it decent looking. Now I see how good of an idea the reverse airflow cooling really is on the 50 series. Also, one of the deciding reasons for IH using the reverse flow cooling was not that it made the engine run cooler, but that it allowed them to use a smaller air conditioning unit that sucked less horsepower. Since the hot air blew out the front instead of into the front of the cab, it kept the cab a lot cooler, preventing the air conditioning from getting overloaded.

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