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post #1 of 12 Old 08-31-2019, 11:58 AM Thread Starter
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Rated engine hp at different rpm's

I have been running my little Kubota B7100 for almost tens years now and great little tractor! However I am now a land owner with 56 acres and 28 of those are being restored to native Oak savanna.
I will be required to maintaince mow several times a year starting in the spring of 2020 and will be needing a more capable machine for running a brush cutter.
I have narrowed my new tractor purchase down to these two machines.

Kubota L2501.
Kioti CK2610

Both hydrostatic drives. Both engines have for all practical purposes the same displacement , rated at just a tick under 25hp and both are 3 cyl diesel.

My question is this;
The Kubota achieves the rated HP at 2200 rpm's while the Kioti is rated at 2600 rpms. I believe that the 400 rpm difference is also there when you compare the rpm to achieve 540 pto rpm. Something like 1800 rpm for the Kubota and 2200 rpm for the Kioti. It has not been easy to compare torque figures for these two engines.
What real world consequences can I expect from the Kioti running at this faster rpm? More wear quicker on the engine? More fuel consumption? Possibly a louder operating tractor?

Any thoughts on the rpm issue or these two tractor choices are more than welcome!

Last edited by ken erickson; 08-31-2019 at 12:33 PM.
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post #2 of 12 Old 08-31-2019, 05:36 PM
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Re: Rated engine hp at different rpm's

My gut feeling is it won't make much difference with either one.

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post #3 of 12 Old 09-17-2019, 07:32 AM
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Re: Rated engine hp at different rpm's

I agree with c5rulz; 400 rpm won't be noticeable. Both engines have the same bore/stroke, and same displacement, but the two manufacturers may just have different methods of rating the power, and setting up the engine.

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post #4 of 12 Old 09-17-2019, 08:21 AM
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Re: Rated engine hp at different rpm's

I would favour Kubota over all challengers; IMHO.

Girls with large lawns like a guy with a really big deck!
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post #5 of 12 Old 09-17-2019, 08:44 AM
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Re: Rated engine hp at different rpm's

Quote:
Originally Posted by ken erickson View Post
I have been running my little Kubota B7100 for almost tens years now and great little tractor! However I am now a land owner with 56 acres and 28 of those are being restored to native Oak savanna.
I will be required to maintaince mow several times a year starting in the spring of 2020 and will be needing a more capable machine for running a brush cutter.
Nice idea to restore the native oak savanna, but I guess the question is why do you need to maintenance mow? According to the Savanna Oak Foundation, based in Madison WI, periodic fire burns are the essential way to maintain the underbrush and the oak tree canopy.

https://oaksavannas.org/
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post #6 of 12 Old 09-17-2019, 02:32 PM
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Re: Rated engine hp at different rpm's

Quote:
Originally Posted by Hydronerd View Post
I would favour Kubota over all challengers; IMHO.
Care to qualify that statement?

'09 JD 2520, CX200 loader and 62D deck
LP RTR0550 rototiller
?? 60" box blade
Simplicity 10" plow adapted to 3-pt hitch
3-point PTO DR wood chipper

'02 JD GT235, 48C deck

'84 JD 318, 50" deck

'86 JD 214, 46" deck

'86 JD 212, 38" deck

'08 X748SE, gone but not forgotten
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post #7 of 12 Old 09-17-2019, 02:47 PM
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Re: Rated engine hp at different rpm's

Quote:
Originally Posted by KHodges View Post
Care to qualify that statement?
IMHO means In My Humble Opinion. So what is there to clarify? It is his opinion. He may or may not have reasons, valid or otherwise, for his opinion.

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post #8 of 12 Old 09-18-2019, 08:28 AM
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Re: Rated engine hp at different rpm's

Kubota has the most efficient and reliable engine. Even though I have a JD 430 and a JD F935, both with Yanmar engines, that never let me down and fuel was greatly reduced over the previous gas mowers, I would have preferred Kubotas. In the 1500lb diesel class pullers, Kubota dominates like the Club Cadet clutch and rear axle.

Just not as sure about Daedong engines.

The OP already has a Kubota, and likes it; why stray.

Girls with large lawns like a guy with a really big deck!
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post #9 of 12 Old 09-18-2019, 09:03 AM
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Re: Rated engine hp at different rpm's

Quote:
Originally Posted by Nouveau Redneck View Post
IMHO means In My Humble Opinion. So what is there to clarify? It is his opinion. He may or may not have reasons, valid or otherwise, for his opinion.
As I have little experience with Kubota tractors, I just wondered what he liked about them to make the comment. No need to take up for him or spin your wheels in the mud; his answer below is exactly what I was looking for.

Quote:
Originally Posted by Hydronerd View Post
Kubota has the most efficient and reliable engine. Even though I have a JD 430 and a JD F935, both with Yanmar engines, that never let me down and fuel was greatly reduced over the previous gas mowers, I would have preferred Kubotas. In the 1500lb diesel class pullers, Kubota dominates like the Club Cadet clutch and rear axle.

Just not as sure about Daedong engines.

The OP already has a Kubota, and likes it; why stray.

'09 JD 2520, CX200 loader and 62D deck
LP RTR0550 rototiller
?? 60" box blade
Simplicity 10" plow adapted to 3-pt hitch
3-point PTO DR wood chipper

'02 JD GT235, 48C deck

'84 JD 318, 50" deck

'86 JD 214, 46" deck

'86 JD 212, 38" deck

'08 X748SE, gone but not forgotten
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post #10 of 12 Old 09-20-2019, 09:04 AM Thread Starter
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Re: Rated engine hp at different rpm's

Thanks for thoughtful responses!
It was a very tough choice for me but yesterday pulled the trigger on the Kubota L2501. It would have been nice to mix some of the best features of both machines into one .
The tractor should be ready to go the first week of Oct. HST, loader with 66 inch bucket , quick detach front loader mount, R4 tires and Landpride dealer installed third function. I will be using a rock and root grapple.
I will need a week here at my house to set up hand controls much like I did on my B7100.

I must give credit to the Kioti dealer in my area, great people!

The reason for maintenance mowing is my site is not suitable for prescribed burns. The idea behind mowing is after the native seeds are planted, this fall, and then germinate next spring the weeds will bolt first. The mower is set high and basically cuts the tops of the weeds off before they can mature and go to seed. This gives the lower and slower growing natives a chance to get established and with continued mowings for the first two years will start to crowd out the weeds.
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post #11 of 12 Old 09-20-2019, 09:10 AM
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Re: Rated engine hp at different rpm's

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post #12 of 12 Old 09-20-2019, 02:53 PM Thread Starter
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Re: Rated engine hp at different rpm's

Its been a blast for me to see some of the equipment being used on this project.
Thats my little B7100 with a 4 foot King Kutter brush cutter. Really is amazing what its capable of doing. The habitat contractor has some VERY nice machines including this Massey Ferguson and Landpride no- till seeder that is able to plant native forbs and grasses. Thats also his tracked skid steer with a Fecon forestry mowing head. That thing is a beast!
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