4320 vs 4720

[Laird006]

These two tractors use the same frames, seem to have the same weights and overall size.

any benefits to them other than 48hp vs 66hp.

also prices we're looking at is 30k for the 4320 with 400x loader and 33k for the 4720 with the 400x loader.


what are your guys thoughts?

 

[kennyd]

These two tractors use the same frames, seem to have the same weights and overall size.

any benefits to them other than 48hp vs 66hp.

also prices we're looking at is 30k for the 4320 with 400x loader and 33k for the 4720 with the 400x loader.


what are your guys thoughts?

Welcome to TBN

If you list what you need this tractor to do for you we can help better. But, bigger is always better:laughing:

 

[Laird006]

the jobs for this tractor are going to be bush hogging. 6 ft roto tiller. 7 ft box blade. FEL work.

from my experience, 48 hp should be plenty for what we want to do.

how about the prices? good?

 

[jenkinsph]

Laird,
Welcome TBN first of all.

Most of us would expect 15 to 18% off list for a new 4000 series tractor. Go to Deere.com and use the build and price section to get a good idea what the msrp is with the options you want.

 

[Nitro-Fish]

In March I was quoted $27,000.00 for a 4120 w/400x R4's and extra remotes, I know this is a little smaller (hp that is), but it gives you another 4000 series reference.

 

[Laird006]

list price on the 4320 is 34665, price we're getting is 30k.

list price on the 4720 is 38596, price we're getting is 33k.

 

[radman1]

the jobs for this tractor are going to be bush hogging. 6 ft roto tiller. 7 ft box blade. FEL work.

from my experience, 48 hp should be plenty for what we want to do.

how about the prices? good?

For those tasks, the 4320 should be fine. The 7' box blade may task the capabilities of the 4320. Not so much because of hp, but because of the weight of the tractor and traction. If the roto tilling is in hard ground, then the extra pto hp would be nice but not critical. I used to use a 6' tiller on my prior 3720 (44hp) and even that tractor once slipped the pto clutch.

I now have a 4520 and like others have said, it has more hp for its size than needed for many tasks. If doing higher speed tasks like pulling trailer down the road, then the hp difference is most apparent.

 

[Nuru]

bigger is better when you have the room - 4720

 

[vsumoski]

I've been studying the 3x20 and 4x20 tractors for several months now.
Besides greater horsepower, both the 4520 and 4720 offer the option of an economy PTO (ePTO) which will save fuel by allowing a lower engine RPM while yielding the same PTO (540) rpm.
Also, besides greater horsepower, the only other difference I've been able to discern between the 4520 and 4720 is that the 4720 boasts a higher hydraulic flow. Hope this helps.
Vince

 

[AKfish]

I believe the hydraulic flow/pressure is identical for all the 4000 series tractors. 17.1gpm @ 2500psi. 5.1gpm for steering and 12gpm for implements.

Of course, the engine is the same as well on all models @ 2.44L.

That's what leads most folk's to the question of "how can I modify my 4120 to get 4720 hp"?

AKfish

 

[vsumoski]

Please forgive me for nit-picking AK, but the hydraulic flow was an important metric for me; and Nebraska Tractor Tests pointed out that neither tractor met the 12 GPM specification.

4520
Pump delivery rate at minimum pressure and rated engine speed: 11.3 GPM
Pump delivery rate at maximum hydraulic power: 10.8 GPM
http://tractortestlab.unl.edu/Deere/4520ehydro2.pdf

4720
Pump delivery rate at minimum pressure and rated engine speed: 11.6 GPM
Pump delivery rate at maximum hydraulic power: 11.6 GPM
http://tractortestlab.unl.edu/Deere/4720ehydro2.pdf

 

[AKfish]

Well... that's an interesting bit of information at the very least. However, I'm not totally convinced that you, I or anyone else might be able to distinguish real world performance differences between 11.6gpm and 12gpm.

I'm not attempting to be sarcastic or a smart@ss... I just don't thnk anyone would know unless they utilized the same testing procedures that the folk's in Nebraska did.

That said; I wonder how those differences would play out if you would test 100 different 4520's and 4720's. What would the average deviation from the mean be and what would the mean hydraulic flow be for all the tested machines?

Would it be 1gpm....? Would you or I know any difference?

AKfish

 

[Cidertom]

Did some checking: Yes they are the same pump. So AK is correct, variations would exist across all the the 4x20 line.

One item for thought about the tractors. We have seen the HP discussions. In large scale manufacturing it is not uncommon to have several different models with common theme. While they appear identical, the "lower" models may be constructed with lighter strenght/ weight components, or those that could not pass (by lot testing) the higher power levels. I wonder if any of that is at work with Deere? Common spare parts cannot be used to deny this as it makes sense to stock the parts with the highest rating to reduce required inventory.

And for the record, I think with the 45/4720 HP they could have put a 16-20 gpm pump on it.

 

[vsumoski]

I agree with both of you one hundred percent,
As I said to the OP, "...besides greater horsepower, the only other difference I've been able to discern between the 4520 and 4720 is that the 4720 boasts a higher hydraulic flow."
A skid steer mounted Harley rake requires 13 GPM. One GPM might not matter but what about two? 8k is too much for me to take the gamble.

Harley Rake, Skid Steer, Skidsteer, Power Box Rake M.6H 72" Hydraulic Angle

 

[eepete]

Where do you see the different flow ratings for the 4520 vs. 4720? When I look on line at the web page specifications, they are listed as the same ?

In fact, online the 4120 has the same flow rate

Pete

 

[DoubleTET]

These two tractors use the same frames, seem to have the same weights and overall size.

any benefits to them other than 48hp vs 66hp.

also prices we're looking at is 30k for the 4320 with 400x loader and 33k for the 4720 with the 400x loader.


what are your guys thoughts?

I would consider upgrading to a 400CX loader if you are going to do any amount of loader work.

 

[AKfish]

Where do you see the different flow ratings for the 4520 vs. 4720? When I look on line at the web page specifications, they are listed as the same ?

In fact, online the 4120 has the same flow rate

Pete

He's referring to the Nebraska test results.

Noticed that a number of the tractor listing's on Used Tractors at TractorHouse.com: John Deere Tractors, used farm tractors and farm equipment, Case IH, New Holland, Agco, Caterpillar. have the Nebraska data listed on the bottom of the page. Click it and you can review the test results for that particular tractor.

AKfish

 

[eepete]

Tnx, AKfish. Found the test. What can one say but YMMV

Sorry for reading something (vsumoski), not having it click, then asking

A 7% difference in flow for the 4520 vs 4720. That would be hard for me to tell the difference. It would be interesting to know the variance from unit to unit. But I would suspect that information is closely guarded manufacturing yield related and not likely to see the light of day.
What would be more interesting is to know if flow is a tested measurement on the assembly line, and if so what is the minimum flow to pass a tractor? Again I would suspect it's not tested- each component is either tested or the parts are within some tolerance and that's good enough.

A buddy of mine says "We live in a 3% world" (referring to what sorts of accuracy people can detect). A BIG generalization, I think it varies from 1% (temperature) to 20% (light, volume, horsepower?). But it's good food for thought.

Pete

 

[vsumoski]

Oh, I'm sorry Pete - didn't see your question.

So the $64,000 question remains:
Is 6hp and 7% flow all you get for $3.6K?
Are there ANY other differences?

I think that the 3520 - 3720 upgrade provides 7hp and deluxe seat option for $220 less; what am I missing?

Vince

 

[eepete]

FWIW, I got the 4520 and paid $600 for the better seat. I didn't see the value in the extra cost of the 4720, about $2K. It's probably totally subjective and silly, but I liked the idea of the 4520 running the engine at 10% less than what it could do, kinda like a safety margin. Seat was worth it, power/flow was not.

vsumoski, I should have read and though about what you posted. It's all good, and I learned something!

Pete