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Tractor Talk Discussion Forum

Duals on Tractor; Traction Benefits!!

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Linx

06-30-2004 04:44:58




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Apart from reduction in compaction, How much inrease in Traction can one expect by going to dual drive tires in tractor?




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leland

07-01-2004 21:46:22




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
REMEMBER WHEN YOU PUT DUALS ON TH GET MORE REAR BITE DON'T FORGET ABOUT THE FRONT END. BACAUSE WHEN YOU INCREASE TRACTION YOU HAVE TO WORRY ABOUT HOLDING FRONT END DOWN. KNOW THIS FOR A FACT WE WERE BALING HAY ONE DAY AND HAD ABOUT 300 BALES OF HAY ON TRAILER THE TRTACTOR WOULD DO NOTHING BUT SPIN . SO INSTEAD OF LIGHTING THE LAOD HE WENT BACK TO HOUSE PUT DUALS ON BUT FORGOT TO WEIGHT FRONT END DOWN TO PROVE A POINT THAT HIS ,TRACTOR COULD PULL THE LOADHE LIVED ABOUT LONG ENOUGH TO SEE THE STERRING WHEEL CRUSH HIS CHEST. DUALS THERE ARE BENEFITS BUT ALSO DANGER

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Ron

06-30-2004 17:36:55




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
Aside from the reduced compaction, you save a lot of fuel by them reducing the amout of wheel slippage..



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Jonathan

06-30-2004 09:59:46




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
Reduction is soil comapction and better ride quality over rough ground are 2 benefits, but exactly how much extra traction you will gain depends on the type of surface, type of tread, loaded tires, etc... Like somebody else said, on a hard surface, duals may hurt the performance by distributing the tractors weight over a greater ground surface, which results in the tires not biting into the hard surface and slips instead. Duals are the best thing to have in the mud and soft surfaces, you want the weight distributed more so the tractor doesn't just sink into the mud (floatation), and with extra ground surface contact, your able to benefit from alot of extra traction. If all you want to do is pull hard on a hard surface, then skinny tires are your best bet, but for in the mud, you want the wide rice and kane tread tires, and yes, wider is better. Rice and Kane tires are the best thing since sliced bread in soft conditons, but they also ride very hard going down the road, cut up your hay fields if you use them for haying, and if you live anywhere where theres ice and snow in the winter, you either have to leave it parked or put tire chains on them because they are hard rubber, and they are totally worthless.
Hope this helps

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Hugh MacKay

06-30-2004 08:47:28




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
Linx: Couple of factors at play here. On a hard road or black top the single may even pull more. In field conditions, more rubber on the ground give big benefits. Consider the average row crop tractor in the 1960 with standard tires being used at that time, tractors had a pull force equal to 3 time their own weight. If you look at these 8 wheelers with 300 hp they are getting very close to 6 times their own weight. Duals will very greatly increase your drawbar pull. They will also beat the crap out of your brakes and front end, so it never ends you must go 4x4.

There is another benefit. In 1975 I bought a new Farmall 1066 on single tires. This tractor destroyed those tires in the first 1,000 hours of operation. Not tread wear but rather breaking of tires. They had bulges so bad you couldn't travel on road in high gear. I had run these tires at 18 lbs., trying to stop tire roll. On singles turning with cultivator would roll tires almost flat. IH dealer brought in tire company as they felt this shouldn't have happened. I was given a new set of replacement tires free of charge. I said," Well guys since you are being so good about it, I will solve the problem and buy the second set and will go duals." With duals always on the second tires when just over 9,000 hours.

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Dean Barker

06-30-2004 15:31:45




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 Re: Re: Duals on Tractor; Traction Benefits!! in reply to Hugh MacKay, 06-30-2004 08:47:28  
You're saying that a 40,000 lb 8 wheeler will have drawbar pull of 240,000 lb. I thought it would be closer to 25,000 lb drawbar pull out in the field. Maybe I don't understand what you mean.



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Hugh MacKay

06-30-2004 16:32:49




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 Re: Re: Re: Duals on Tractor; Traction Benefits!! in reply to Dean Barker, 06-30-2004 15:31:45  
Dean: I rather doubt to many of those 8 wheelers are too much over 20,000 lbs. Sure I imagion you can load them to that weight. Around here they add no weights, as they are buying them for low ground presure pulling.



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Joe Evans

06-30-2004 08:04:55




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
Obviously you will gain traction which makes more drawbar HP available. Also, there is the added of reducing rolling resistance when going over previously tilled ground as you would when disking.



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rustyfarmall

06-30-2004 05:50:14




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 Re: Duals on Tractor; Traction Benefits!! in reply to Linx, 06-30-2004 04:44:58  
I can give you an example. At one time I owned an 856 Farmall, which is roughly a 100 horsepower tractor, at the time, chisel plows were a very popular method of tilling the soil. The size of plow a tractor could handle was considerd to be one foot of plow for each 10 horsepower of tractor, so with a 100 horsepower tractor, I should have been pulling a 10 foot plow, by adding a set of dual rear tires, I could easily pull a 13 foot chisel plow. I tried pulling this plow one time without the duals, it just didn't work, I kept spinning out.

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