Cab placement

DeltaSteve · Apr 22, 2021

We frequently hear that the 86 series IH ride like a bronc because of the cab/seat being ahead of the axle.I never thought so. YesterdayI looked at a newer 6000/7000 series Johndeere. the cab is in exactly the same place,ahead of the axle.I had never noticed.So,do they ride like a bucking bronc?

Tony in SD · Apr 22, 2021

Guess I never noticed the bucking. I was more conserved about getting in and out. It was almost easier to get into a pilots seat than an 86 series IH.

danofarming · Apr 22, 2021

Getting the 86 series In and Out of Gear was my problem. Worse shifting ever.

DeltaSteve · Apr 22, 2021

Yep,an 86 is hard to enter. Never even been in the cab of a JohnDeere. My 1456 with the 'delux' IH diamond cab is also hard o get in/out. As hard as the 86.

ss55 · Apr 22, 2021

Other tractors with the cab and seat ahead of the rear axle have a smooth ride. Could the short wheelbase and tall height be what make a rough ride?

Tony in SD · Apr 22, 2021

IH 06 series was worse IMHO

SDMike · Apr 22, 2021

DeltaSteve, yes they ride rough. We had a 7800, and tried everything to make it ride better. More weights, less air pressure, less weights, more air pressure. It didn't matter and it didn't last long on our farm. Replaced it with a 8100. Much better ride.

Mike

jon f mn · Apr 22, 2021

Cab in front of the rear wheels would make for a smoother ride. If the ride poor it could be a short wheel base as that will make for a rocking motion.

Bruce from Can. · Apr 22, 2021

On my 966, you climb in the door. Then go down the hall to the seat, which is behind the axel for maximum catapult action. My 966 is a tough old tractor and has served me well, but like many tractors built before the 1990s , there wasnt a great deal of thought put into operator comfort. Comfort, Comfort!! What do ya mean Comfort ??!! Ya got a cab dont ya?? Ok so its hotter than h@ll on any day the sunshines, and your hearing is permanently damaged from vibration noise, but you wear in a cab!! What more do you want??
My 930 Case Comfort King at least had the fuel tank behind the seat, and the seat moved forward of the front axle so you rode in the tractor and not behind the tractor, and its 10 years older than my IH 966.

Absent Minded Farmer · Apr 22, 2021

Don't those newfangled tractors have cab suspension like the semi tractors do? I'd think that would eliminate some of the bouncing & shaking.

Mike

Brown Swiss · Apr 22, 2021

All those old tractors rode rough, now they have air ride cabs and great seats and independent front suspension!

SVcummins · Apr 22, 2021

Mine dont

Dieseltech · Apr 22, 2021

Wheelbase has more to do with how tractors ride to me, a short wheel base with a HIGH mounted cab will ride worse than a long wheelbase LOW mount cab to axle will. For the best ride you want the seat down close to the rear axle, with the seat high, and narrow 30 inch row wheel spacing, you will not have a very smooth ride for and aft, or side to side.

P I Pete · Apr 22, 2021

My thoughts on seat placement should be right on top of rear axel, think riding a teeter totter, the further you get from the center you will get a longer ride.

Pete

Tx Jim · Apr 22, 2021

Many yrs back I utilized my fiends 986 operating a 3 pt 22 ft field cultivator for 1/2 a day. I disconnected the 986 & attached my JD 4255 to finish the fields. That was my ""one & only time"" to drive that 986 which was IMHO for me operator unfriendly. I didn't like the way it rode or any of the trans or hyd controls.

Brendon-KS · Apr 22, 2021

If the tires are all of equal size (such as with a 4WD tractor) the smoothest place for the cab would be right in the middle since the operator would only experience half of the up-and-down motion of each axle. The issue with 2WD tractors is that the small front tires are more affected by bumps and dips than the large rear tires. So, on these tractors the seat needs to be closer to the large tires. Front-wheel assist tractors will ride better than the same model with 2WD for this same reason - the larger front tires roll over dips that the smaller tires would drop into. Modern tractors have their cabs farther forward than older tractors due to the desire for more room around the operator. A cab setting right over the rear axle must very narrow at the seat level since there's only about 40 inches available if a 60 tire track width is to be accommodated. But, since the vast majority of cab tractors these days are equipped with front assist it allows the cab to be moved forward and widened without a ride penalty.

showcrop · Apr 22, 2021

(quoted from post at 08:58:08 04/22/21) My thoughts on seat placement should be right on top of rear axel, think riding a teeter totter, the further you get from the center you will get a longer ride.

Pete

Pete around here our teeter totters have just one pivot.

Geo-TH,In · Apr 22, 2021

My old 1950 Farmall C has a Cadillac ride compared to my Kubota with a cab.

Eric in IL · Apr 22, 2021

One of the most comfortable tractors I have driven was an Oliver G-1355 without a cab. It had a very long wheelbase. Loved that low r.p.m. Minnie motor.

SVcummins · Apr 22, 2021

We have a 7410 it isnt rough but it has 42 inch rubber on 115 hp tractor its kinda like riding a bowling ball

caterpillar guy · Apr 23, 2021

Cabs were sort of an after though on most tractors at that time. The best shifting IH was the models with the lever out the top like the letter series. I think IH was behind the eight ball on the confort and cab designs for a long time. And some of the cabs like the SGB and a few others were ahead of the game.

Cab placement

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