John Deere High Speed Tractor

[mark8340]

Do anyone out there know anything about John Deere's attempt to create a high speed tractor like JCB have done?

[Laapa]

Hmmm, front and rear axle suspension on the 8020-series. Does that count?

Do a little teetering with the engine-computer to get the little extra speed...

[eppie]

Hey, we once had a Zetor 2011 two cylinder at home. My brother did a paint job on it, for a guy who knew my father.

The rev regulator was somehow gone. My both brothers wanted to clock it, one riding the 2011 and the other chasing it by automobile to clock the speed. It ran about 70 Km/h ... ;D Blow the horn when you pass the Fendts...

The contractor has two of his Ursuses for sale, and now is converted to the ORIGINAL: He has purchased two ZTS 16245. He ordered the tranny with which he can reach 45km/h on the smallest tire size.
With 20.8x38 under them, they almost run 60km/h.
(it depends on a set of gearwheels in the front of the tranny. you can replace them, and make your favorite combination with the wheels)

So, why do those dirt contractors here in Holland all want a Vario?? For the speed?? the modified 16245 runs almost 60, without engine rpm adjustments.
Besides, the 16245 sells here for 45,000 Euro, and a Fendt 145,000 so the difference in acceleration wont pay back that 100,000 Euro. The fuel use will be equal when the ZTS runs faster.
If the Vario uses less fuel on transport jobs, why arent trucks having them??
CORRECT, a vario is too expensive for transport purposes...

[AgMachinery]

Yes, John Deere seems to be working on a highspeed tractor under the code names of Pony and Pegasus. It already runs in the fields of England and Australia. According to the latest rumours the tractor will be introduced to the public in England during the Smithfield show in november this year.

[eppie]

Pegasus, or Pegaso, is (was) also a Spanish truck brand.

[European A]

Yeah!
You are right Renze. Pegaso was a Spanish brand that developed succesful trucks and vans. One of the latest truck Series by this brand shared the same cab used by the 95 Series of Daf trucks in the latest 80´s. The brand was bought by an important italian manufacturer of brands... I bet you know the company...the same one that purchased Magirus and Ford (European) trucks...the same that belongs to an important Italian Corporation that owns CNH... Yeah, they built Iveco trucks in thge old Pegaso plant

[HPP]

I know this is a JD topic but have to give Renze a comment :
Yes Renze, why do they all want Fendt Vario? Ask them!
It´not expensive at all with the Vario doing transport work and that´s because the efficiency is outstanding.
Did you know that when the total power loss in the Vario is mesured the result is as follows:
Total loss 18,9%. The Vario 8,0% and the rear end (differential and planetary gears in rear axle) 10,9%.
The power losses in the rear end wouldn´t differ much between different tractors I guess.
In the conventional gearbox the power losses grow bigger the higher the speed and I do believe that in most cases the losses are bigger in the conventionals than in the Vario at say 50 km/h.
Sorry, just couldn´t keep my fingers from this. Now let´s go back to the JD topic again. Seems like a lot of the manufacturers are having thoughts in this direction.
Mercedes, JCB, Fendt with the "Evo" and now JD. Now, is it really that interesting? I´m not so sure. Have a hard time seeing that this type of tractor could generate volume sales figures. Take the US! Isn´t it still so that tractors are seldom used on the roads. If so, then there wouldn´t be that many sold over there, would there?
Well, I guess (hope) they know what they´re doing.

[eppie]

Hey HPP, you didn't answered my most important question: Why do trucks dont have them??

It's just that the most CVT and varios can reach 50kmh while conventional trannys not yet. But they are coming, JD, Landini all offer 50kmh. By the way, Vario with bells and whistles that arent necessary, will cause extra costs because most of these tractors are just used for transport, no farm duty.

I guess the vario driver pays that extra money for the advertisements and commercials that are necesary to persuade him to go vario.
With the (some) dirt contractors, they had succesful marketing.

By they way, special for Woodbeef: I know a dirt contractor near my town who has Steyr 9145 running in front of the Veenhuis 12 m3 dumpers. Lately, i drove behind them and they went over 60 km/h !!

[Laapa]

Ehh... Renze...
CVT trannies can reach 50km/h and conventional ones cant? That has nothing to do with being a CVT has it? I non-CVT trannies are in alomst every vehicle out there that does more than 50 km/h. Cars, trucks etc.
(OK so that's propably not what you really meant)

In a way I'd say Valtras Eco-Power tractors (6750 and 8350) are in reality high-speed tractors.
(these are tractors buildt to run at low (1800rpm) RPMs to save fuel, enviroment etc.)
If there is any Eco-Power operator around here that does not run it at the usual engine speed (>+2000rpm) to get a higher roadspeed I'd be very suprised. You can get them with suspended front axle and I suppose they are a very nice ride.

What are the max. roadspeeds in your countries? Its 40 km/h in Sweden.

As far as Varios and contractors, there will always be those who need to lower taxes do writeoffs on an expensive tractor.

[eppie]

Hey Laapa,

I meant that the Fendt 926 vario was the first conventional tractor to reach 50km/h. Then the other varios Steyr CVT and Fendt 700. Then the others followed with conventional trannies.

The max. roadspeed was 16 km/h here, and is 25 since 1994 or so. But you wont get a ticket for overspeeding. (my grandfather once got a ticket for overspeeding: he went faster than 30 km/h on his BICYCLE !! but that was in the thirties.)

All the new sold tractors must meet the CE legislations to be allowed to be sold. And they wont get the CE sticker if they can go faster than 50. The agricultural version of the Unimog (with 3ph) doesn't need a drivers license, and therefor they are not allowed to go over 50kph. The civil versions can go 80 but are not allowed to take the same load, and they need a drivers license.

[Hendrik]

Hello Renze,

the Fendt 926 was not the first convetional Tractor with 50k transmission, it was the Fendt Favorit 500 Series (Favorit 509 - 515). JDs are avaliable with 50k tranny (AutoQuad) in 6010 series since end of 1997 and in 7710 + 7810 since 2001 here in Germany. The JD AutoPowr (40 or 50k) is availiable in Germany since mid 2001 in 6010 series tractors (only 6410 and 6610 - 6910) and since 2002 in 7710 + 7810.

hope you understand my bad english

greetings from Germany