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 04-12-2004, 17:24 Post: 82871
kully560



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 kubota why so light in weight

can anybody answer this question why kubota are so light weight for there hp,kioti dk55 4685lbs,tn65 5140lbs ,john deere 5220 4730lbs kubota m4900 3968lbs all are 4x4 rops and 45 to 47 pto I guess maybe somebody might know thanks






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 04-12-2004, 17:39 Post: 82873
muletrain



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 kubota why so light in weight

They are light. Consider adding wheel weights to your purchase if you will be doing any loader work. I run around with a round bale on my behind until I get some beet juice in my tires, or add EZ weights.Else My L5030 stands on its nose.






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 04-12-2004, 18:56 Post: 82881
ncrunch32



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 kubota why so light in weight

I agree with your observation. It was a factor for me in choosing JD over Kubota. It had more weight and looked like a much more substantial chunk of metal to me for equal HP.






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 04-12-2004, 21:01 Post: 82898
beagle

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 kubota why so light in weight

I'm not sure on the L-series, but I know on the B-series Kubota uses cast aluminum for some of the housings that others use cast iron for. It makes a substantial difference in the overall weight of the machine.






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 04-12-2004, 21:09 Post: 82900
Peters

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 kubota why so light in weight

Kobota uses more aluminum for the castings than other manufactures. They tend not to use the standard 3 main castings to carry the load of the tractor using a steel sub frame between the front and rear of the tractor.
There are pros and cons to this as most modern backhoes use these frames to reduce the load on the main castings. Naturally it is more difficult to repair a clutch for example.
Do to the reduced mass the wheels and rims etc are reduced further contributing to the lower mass.
I suspect that the engines are on a weight diet also but can not find any weight factors for the engines to compare.






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 04-13-2004, 20:50 Post: 83050
beagle

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 kubota why so light in weight

The lighter weight does give these tractors and excellent power to weight ratio, and has distinct advantages for mowing and tip-toeing around on the lawn. As far as cast alluminum vs. cast iron, I have never heard of a problem with Kubota's aluminum housings.

As mentioned earlier, add wheel weights when traction is an issue. Shed the weight when not needed.






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 04-13-2004, 21:10 Post: 83054
Chief



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 kubota why so light in weight

All of the hp in the world will do you no good if you don't have the weight to get the traction. Kubota makes a great tractor but I prefer the heavier castings and weight of the other tractors.






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 04-14-2004, 05:52 Post: 83071
Art White



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 kubota why so light in weight

JD was the first to use the newer design of full frame and the component chassis and all of the major tractor lines are currently using it. On the larger farm tractors for tillage work a weight to horsepower ratio of 130 lbs per horsepower has been the most optimum. Tractors used on lawns are better to be around 70 to 90 lbs per horsepower for maximum performance. Some companies are using older chassis castings that have been retired from use in the newer designed tractors.






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 04-14-2004, 06:04 Post: 83075
beagle

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 kubota why so light in weight

Art, any experience with problems from Kubota's aluminum castings, other than misuse? Be interested in knowing whether it has ever been an issue.






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 04-14-2004, 06:58 Post: 83078
BigBob



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 kubota why so light in weight

One of the deciding factors for me was the weight issue. My yard is very wet all year long it seems, and the lighter Kubota 7500 (1397 lbs) for more HP made sense to me.






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