tractor for maximum traction

[RedNeckRacin]

I guess someone may have to educate me. But why would you want any wheel slip if you can avoid it?

Because of compaction is my guess.

 

[vtsnowedin]

Because of compaction is my guess.

If you have no wheel slip you have too much weight on and are wasting fuel.

 

[Sysop]

I forget where I read the same process of calculating wheel slip, but one of the big things they indicated was that zero wheel slip means 100% of the torque is also ate up by the drivetrain and could wear the drivetrain prematurely. Zero tire slip is when gears get sheared. A "properly ballasted" machine should still be able to have some wheel slip. Weighing a machine down to the point tires can not slip is not properly ballasted. If the machine can't break traction once under too much load it is going to break something else.

Something else that hasn't been mentioned for traction is dual rear wheels. In extremely muddy situations sometimes the extra floatation provided by more surface area is the key. As has been stated above, the conditions you are working in has everything to do with how you set your machine up. If you could provide more information on the types of field conditions you frequently see, our advise can be tailored more to your needs.

 

[flusher]

"A "properly ballasted" machine should still be able to have some wheel slip. Weighing a machine down to the point tires can not slip is not properly ballasted. If the machine can't break traction once under too much load it is going to break something else."

Right on. This is particularly important if you have a 4WD tractor and are doing FEL work on a concrete surface. Use 2WD. If you use 4WD you risk damaging the transfer case if the front wheels cannot slip when scooping up material in the bucket.

"Extremely muddy conditions": around here there are hundred of thousands of acres of rice field. Those tractors have rubber tracks installed for floatation and traction in the mud.

D & S Tires Inc.

 

[CobyRupert]

Dang, I was hoping they built the drive train and transmission of my tractor to be able to handle all the power the engine can produce. Granted, if you pop the clutch or get things hopping, or are in 4 wd and its fighting itself, that's a different story.
But I was thinking the engine stalls under load (with traction) before things break, but I guess not...

 

[vtsnowedin]

Well imagine if you have enough ballast on so you have no tire slip and are pulling a two bottom plow. You come to a hidden rock that is well attached to bedrock and one of the plow points catches under the lip of the rock. You have just broken something on the plow. (at least a shear pin if it has them) or yanked the tractor to a complete stop which isn't going to be good for a lot of things from the rear castings to the main crank bearings.
But if your tires are already slipping ten percent and you get that sudden extra resistance they will break free and spin while the draft control tries to raise the plow up enough to clear the rock.
There is another caution in my manual.
"To extend drive train life, avoid excessive soil compaction and rolling resistance, avoid adding too much ballast. Ballast should never exceed the weight required to provide traction for continuous full power loads in 3rd gear for 2-wd tractors. Remove ballast if tractor engine labors when pulling heavy loads in the first three gears.
When using mechanical front wheel drive, ballasting to one gear slower is appropriate. "

 

[bigdeano]

You can easily measure the drawbar pull of a tractor by using a hydraulic cylinder with a pressure gauge on the rod end connection. Don't forget to put some oil in it. A little math will give you the pull.

 

[RedNeckRacin]

Well imagine if you have enough ballast on so you have no tire slip and are pulling a two bottom plow. You come to a hidden rock that is well attached to bedrock and one of the plow points catches under the lip of the rock. You have just broken something on the plow. (at least a shear pin if it has them) or yanked the tractor to a complete stop which isn't going to be good for a lot of things from the rear castings to the main crank bearings.
But if your tires are already slipping ten percent and you get that sudden extra resistance they will break free and spin while the draft control tries to raise the plow up enough to clear the rock.
There is another caution in my manual.
"To extend drive train life, avoid excessive soil compaction and rolling resistance, avoid adding too much ballast. Ballast should never exceed the weight required to provide traction for continuous full power loads in 3rd gear for 2-wd tractors. Remove ballast if tractor engine labors when pulling heavy loads in the first three gears.
When using mechanical front wheel drive, ballasting to one gear slower is appropriate. "

I knew that came into play somewhere, although there are definitely other very important reasons as previously shared.

 

[vtsnowedin]

I knew that came into play somewhere, although there are definitely other very important reasons as previously shared.

Never said you were wrong just added on the money factor. A farmer has to pay attention to both.

 

[omran mubarak]

thanks you all
if any one have an idea for how can i measure the weigth in traction test please help me