kubota vs. kioti

[GManBart]

The "foot" in foot-pounds is not movement. The "foot" is the length of the moment arm that the torque is acting on. A torque of 1 foot-pound is 1 pound of force produced on a moment arm of 1 foot.
Work is force times distance moved. Power is the rate that you are performing work. The RPM does in


fact give you the distance component of the horsepower calculation in the form of angular motion. I wish some people would quit trying to pretend to be engineers, it is rather annoying to those of us that do hold engineering degrees, and spent many hours studying the fundamentals of physics.

You misread what I wrote. I never said the RPM doesn't give you the distance component of horsepower. I said the RPM doesn't provide the distance (arm) to the force (torque).

I can't speak for anybody else, but I would never pretend to be an engineer. I've actually kissed women before :thumbsup:

 

[nc redneck]

Wow. I own JD, Kubota and Kioti. I think Kioti is by far the best when comparing price to abilities.

 

[SPYDERLK]

The "foot" in foot-pounds is not movement. The "foot" is the length of the moment arm that the torque is acting on. A torque of 1 foot-pound is 1 pound of force produced on a moment arm of 1 foot.
Work is force times distance moved. Power is the rate that you are performing work. The RPM does in


fact give you the distance component of the horsepower calculation in the form of angular motion. I wish some people would quit trying to pretend to be engineers, it is rather annoying to those of us that do hold engineering degrees, and spent many hours studying the fundamentals of physics.

:drink:

 

[LD1]

Correct. I said torque at the engine is irrelevant. We are talking tractor engines here and comparing them. I have no idea what the torque is at the engine? And I bet 99%+ of the members here don't either. It isn't a commonly published spec. I would also be willing to bet that 99%+ DO know what their HP is though. So if engine torque was important as you claim, why doesn't anyone else care?

 

[arlen4720]

Correct. I said torque at the engine is irrelevant. We are talking tractor engines here and comparing them. I have no idea what the torque is at the engine? And I bet 99%+ of the members here don't either. It isn't a commonly published spec. I would also be willing to bet that 99%+ DO know what their HP is though. So if engine torque was important as you claim, why doesn't anyone else care?

I'm more concerned with the shape of the torque curve, not the peak torque.

 

[arlen4720]

Wrong again. We're talking about a car/truck/tractor engine and "torque" is the force (the ONLY force) in the horsepower equation. In the U.S. we talk about foot pounds or pound/feet of torque, multiply that by RPM, divide it by 5252 and we get horsepower. The RPM doesn't provide the distance factor to the force, the "feet" part of lb/ft does.

Since we're talking about engines, and not horses, if you don't have rpm or torque, you can't have horsepower. You can measure torque. You can measure rpm. You can't measure horsepower, because it's a derived from the two actual factors in play.

Your horse analogy is beyond poor. Go look up how Watts calculated what "1hp" is. In fact, he started with ponies as I recall.

Ft-lbs is not a measurement of force. lbs are. Or Newtons. Ft-lbs (or Netwon Meters)are a measurement of torque, it is not the same as simple force.
If you run all your calculations with SI units, and attach the units, and carry them through all your calculations it will all make sense.

 

[TomSeller]

I have not read all the back and forth, but I like to think of an electric motor with a locked rotor (stalled) as outputting torque but no HP since it is doing no work (no RPMs). Once rotating it is doing work and is outputting HP along with torque.

I don't explain with a piston engine because at "locked crank" they die and output no torque or HP.

 

[arlen4720]

I have not read all the back and forth, but I like to think of an electric motor with a locked rotor (stalled) as outputting torque but no HP since it is doing no work (no RPMs). Once rotating it is doing work and is outputting HP along with torque.

I don't explain with a piston engine because at "locked crank" they die and output no torque or HP.

yes, in fact an electric motor puts out maximum torque at locked rotor...until it burns up. You have to remember that the power plant is doing plenty of work when the motor is stalled though. And while no rotary work is being done, plenty of power is being dissipated in heat. You can look at it like a mechanical clutch slipping between the power plant and the motor. If you like mechanical analogies.

 

[TomSeller]

yes, in fact an electric motor puts out maximum torque at locked rotor...until it burns up. You have to remember that the power plant is doing plenty of work when the motor is stalled though. And while no rotary work is being done, plenty of power is being dissipated in heat. You can look at it like a mechanical clutch slipping between the power plant and the motor. If you like mechanical analogies.

I can generate heat and use energy while outputting no work with my legs and arms. Two different things.

 

[farm88]

I've had the opportunity to own both a kubota L3200, and a kioti ck35 recently. I've got to say that the Kioti is much more a better machine to me than the same priced kubota. There is just no comparison. The Kioti is like a tank compared to the kubota a toy. The Kioti brings so much more tractor to the table. The Kubota has a defective 3pt. lift, the Kioti works right.
I can only share first impressions, but very impressed with the ck35.

You should have looked at a Mahindra. You would have had a tractor your naybors would be gelous of then.