MFWD

[schmism]

is the name for an "all wheel drive" were the fronts are designed to spin faster than the rears due to smaller front tires.....

4wd being reserved for tractors that have the same size front and rears and spin at the same rate.

if my above understanding is correct....
so how does this work?

2004 CASE IH JX95 For Sale at TractorHouse.com

 

[N80]

Well, no. MFWD is usually the term given to tractors like ours (cuts, uts and smaller ags) that have mechanically driven front wheels. 4WD usually refers to very large full time 4wd Ag machines.

BUT! This is a matter of convention only. There is no 'dictionary' that gives universally accepted names for these systems.

As I've mentioned before, Kubota designates all of its tractors with a front drive train as 'four wheel drive' or 4WD. I also think that the fronts spin slightly 'faster' on my Kubota too...but I'm not sure.

 

[Farmwithjunk]

Well, no. MFWD is usually the term given to tractors like ours (cuts, uts and smaller ags) that have mechanically driven front wheels. 4WD usually refers to very large full time 4wd Ag machines.

BUT! This is a matter of convention only. There is no 'dictionary' that gives universally accepted names for these systems.

As I've mentioned before, Kubota designates all of its tractors with a front drive train as 'four wheel drive' or 4WD. I also think that the fronts spin slightly 'faster' on my Kubota too...but I'm not sure.

I've always tried to equate 4WD vs. MFWD to lake vs. pond. There's a difference, and we all THINK we know the difference, but where do you find a set of guidelines as to which is which?

As a generality, 4wd's operate in 4wd constantly. MFWD is a term generally accepted as applying to tractors that can be used in 2wd OR 4wd. There is no constant in the terminology throughout the tractor industry.

 

[RoyJackson]

Most of the tractors I've seen or seen pictures of that were 4WD or All Wheel Drive did have the same size tires fore and aft.
These are normally big (BIG!!) high power machines that require maximum traction..
On our little tractors, you'll see most of the slippage while turning (changing direction) since one tire will be traveling less then the other (on the front). They have to slip to minimize winding up the drive train.
If we just drove straight all the time, there wouldn't be any concerns.

 

[JC-jetro]

is the name for an "all wheel drive" were the fronts are designed to spin faster than the rears due to smaller front tires.....

4wd being reserved for tractors that have the same size front and rears and spin at the same rate.

if my above understanding is correct....
so how does this work?

2004 CASE IH JX95 For Sale at TractorHouse.com

It appears the rear wheel Dia is smaller than the front. Hubs certainly look different. I can't see how front and rear wheel can spin at the same rotation rate unless size difference is an optical illusion.

JC

 

[RoyJackson]

It appears the rear wheel Dia is smaller than the front. Hubs certainly look different. I can't see how front and rear wheel can spin at the same rotation rate unless size difference is an optical illusion.

JC

They're the same size...it's called perspective.

 

[Birdman253]

It appears the rear wheel Dia is smaller than the front. Hubs certainly look different. I can't see how front and rear wheel can spin at the same rotation rate unless size difference is an optical illusion.

JC

Optical illusion. They are same size.

 

[kwolfe]

I found this explanation. JackIL provides a very good descritpion.
http://www.tractorbynet.com/forums/buying-pricing-comparisons/16752-mfwd-vs-4wd.html

 

[JC-jetro]

it's called perspective.

I should know. I are an ingineeer .. you know.

 

[Robert_in_NY]

That JX is a mudder option (NH has the TB line that is the same as the JX). It is a standard JX with different gearing to accomodate the high clearance required in the vegetable fields. 4wd is just that, 4 wheels drive the tractor. MFWD and FWA are assist axles and not full time 4wd regardless of tire size.