Comparing Tractor Power

[Thorny]

When choosing a tractor we often make a decision based on rated power. Implements are suggested based on PTO HP rating. But being the kind of motor head that I am, I wonder why Kubota doesn't list the rated torque of their engines. At least not their CUT's. JD does, Kioti does.

While signing the paperwork for my new L2501 (and hoping it had the power I'm going to need) I ran into the local are Kubota rep, and asked him why they don't, to which he had no good answer.

Yesterday my tractor showed up and in the owners manual I finally see the rated torque for the 25 horse motor in my tractor. I was surprised to see 70 ft/lb. Comparing that to a JD 3032E, a 32 horse tractor, which only has 64 ft/lb. Or a 3038e which has 77 ft/lb.

Kubota is missing a huge selling opportunity here when their 25hp tractor has more work potential than a JD 32hp machine.

Can anyone share the torque rating for the Kubota L3301 and L3901 from their owners manuals? Thanks!

 

[BCrouse]

3301 - 75ftlbs
3901 - 85.4ftlbs

 

[1970cs]

Also the 3032/38E typically are not equipped with a quick detach loader. And the loader valve is not the same as what Kubota has on the "economy" line of tractors. The deere you cannot blend functions such as curl bucket and lift at the same time. It's either one function or the other.

Pat

 

[MadMax31]

The L2501 is over 100 cubes. Its very similar to the previous L3200.

32e/38e have quick tach buckets, but the loader is more or less permanent on machine.

38e has a turbo.

Kioti CS2610 is very similar to L2501, large de-tuned engine.

 

[zin01]

The L2501 has a 24.8 hp motor but we can round that up to 25 hp @ 2200 RPM and that comes out to 59.7 foot pounds of torque. I'm not trying to bash you or anything I'm just saying somewhere the numbers don't line up.


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[cerlawson]

Ya gotta remember just where that HP comes as RPM changes. I don't think that HP number means much, depending on gearing. I have an old Blue tractor rated at only 18 HP.
That tractor will do anything my 30 HP can do, since it is geared to use the engine at it's more powerful HP rating.for most work I do.

 

[Thorny]

The L2501 has a 24.8 hp motor but we can round that up to 25 hp @ 2200 RPM and that comes out to 59.7 foot pounds of torque. I'm not trying to bash you or anything I'm just saying somewhere the numbers don't line up.


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I'm not sure why Kubota would lie in their owners manual.

The equation you used to calculate needed RPM as a variable. But unless you've seen a dyno graph for this motor, its hard to know where in the RPM spectrum, max torque falls. If max torque is achieved at 1860 rpm then the equation tells us that the owners manual is correct.

Not trying to argue, just trying to look at this objectively based on the info I have.

 

[zin01]

I'm not sure why Kubota would lie in their owners manual.



The equation you used to calculate needed RPM as a variable. But unless you've seen a dyno graph for this motor, its hard to know where in the RPM spectrum, max torque falls. If max torque is achieved at 1860 rpm then the equation tells us that the owners manual is correct.



Not trying to argue, just trying to look at this objectively based on the info I have.

Yeah that makes sense. Like I said I earlier, I'm not trying to argue. Now I wonder how much torque the 2650 that I'm looking at makes.


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