larry8818 said:
Larry,
There are more to the ranges than speed. The Kubota low is lower than JD's low. Meaning it will have more power. Like when tilling. The mid Kubota is higher than the JD's low meaning it will have less power, more speed. Like when Mowing or back blading. As said here by many, The high range JD's can mostly be used for transport. This makes it almost useless. Kubota,s high range is slower that JD, however you CAN mow in high... It looks like Kubota actually got it right on this one.
Danilo,
Of course there is more to the ranges than just speed, it's call gearing and it affects everything with a motor. Since the Kubota low gear is lower than the Deere, it's way overkill to begin with. Like other 2520 owners on the forum have said, including Chris2520, in 4wd, with the rear dif lock on you can bury the loader in a pile and spin all 4 tires no problem. It is not that you run out of gear or power, you simply run out of traction, so why I would need a lower gear I do not know, and I guess John Deere himself does not either. Frankly if you need lower than the 2520's low gear John Deere makes it and it is called a 3120.
For the mid Kubota gear being higher than the 2520's low, it is indeed by a whopping .8 mph, so lets see cutting 2 acres I can probably save myself 3 minutes over the course of the 50 minutes to cut my yard...
For high range, you actually can mow like heck, any large hills maybe a problem, but as I said before I have all I can do to stay on my 2520 with 72"mmm in low range with the peddle to the floor going 4.5 mph. The high gear is actually very useful unless you live on a postage stamp

. I use mine all the time.
I still say you can keep that Kubota 3 range tranny. It is way too close between the low and mid ratios. I will take the K.I.S.S. 2 range on the 2520 any day.
I do wish the 2520 did have that mid gear in the 8-9 mph range. Now that would be useful.