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Allis Chalmers Tractor Video

D

DRussell

Well-known Member
Can someone explain how the traction booster worked on the Allis? Video is a D17 vs a Case. Not sure what model of Case. Both were pulling 4 plows. The Allis pull the plows deeper and over a longer distance on the same amount of fuel.

https://www.youtube.com/watch?v=8lD2RBdrXGI
 
the case is a model 800. looks like a gaser.

the 800 would be the case-o-matic torque converter versus clutch like the 700

I would guess this was probably 1958-59ish?

it looks like the D17 has a wider tire so more rubber on the road so to speak.
 
i wonder what advantage (if any) the semi mounted AC plow might have over the trailer type the Case was pulling

love these old 50's vintage movies.
 
Same as most any draft control. Whether it's pulling against a torsion bar, or spring, the heavier the pull, the hydraulic system is activated through linkage, to lift. With AC it started with the WD, and it really did work. Then with the WD45 you had a gauge so you didn't have to guess where to set the system. D17 was configured somewhat differently, but was the same system.
 
You must not have snooped around that channel. The historic AC company videos J&L list are abundant.... & great. There are several that cover the
Traction Boost system. I've included the best one in a link below. Basically, the TB is pulling down on the tractor, roughly in front of the rear
axle. This causes the implement to "suck the tires down in the dirt" as was explained to me by a retired AC dealer. The Fast Hitch works on the same
basic principle. I'm sure the collectors of other brands can fill in on how their favorite tractor does about the same. Am actually surprised the
Eagle Hitch doesn't do the same thing.

Mike
Pull That Load
 
(quoted from post at 13:14:19 09/09/20) Can someone explain how the traction booster worked on the Allis? Video is a D17 vs a Case. Not sure what model of Case. Both were pulling 4 plows. The Allis pull the plows deeper and over a longer distance on the same amount of fuel.

https://www.youtube.com/watch?v=8lD2RBdrXGI
Click to expand...

"Traction booster" or "draft control" does the same thing, when the plow encounters a "tough spot" they lift the plow/reduce plowing depth, and as a consequence there's a downward force on the rear tires to help "get the he77 out of there". (Countering the "suck" force of the plow to go ever deeper.)

Never made any sense to me, just a "workaround" that allows a tractor that's too small/too light/lacks HP to (sort of) do the job.

IMHO, the tough/wet spots in a field typically could use the deepest tillage/turning over of the soil and "Traction Booster" or "Draft Control" reduces the plowing depth just when it's most needed.

Constructive comments welcome!
 
Of course its in name only.Fiat is the only company now that I know of that actually has parts on them that are similar to the older ones.The lift pump on my Oliver 1365 4WD came off the shelf from a NH dealership its the same as on some tractors they sell today.
 
I grew up on AC tractors and agree 100% never cared for the traction booster thing as you say all its doing is raising the plow up.Need to get a bigger tractor or smaller plow.That is one thing about trailer plows they stay where they are set.
 
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