Re: interchangeable parts Steyr,Zetor and ursus

Posted by Renze on August 11, 2002 at 09:12:58 from (213.75.176.223):

In Reply to: interchangeable parts Steyr,Zetor and ursus posted by part on August 09, 2002 at 13:08:08:

For as far as i know, there are no parts interchangeable.

BUT:

Since the last 10 years, practically all the Steyr cast-iron is produced in the Zetor foundry. www.slevzet.cz

AND:

The zetor engines of the 1946 model 25 A, Super35 and super50, UR2 Crystal series and UR3 Forterra series are (probably) based on a pre-war design from Hans Ledwinka, the genius chief engineer at Tatra. After WW2, Hans Ledwinka moved to Steyr, where he used the patented swinging half-axle design with independent suspension, on the light all-terrain vehicles, the Pinzgauer and Haflinger.

It is most likely that the co-operation between MWM and Steyr resulted in engines based on Tatra development, brought by Hans Ledwinka to Austria, and then to Germany. These engines have many design similarities, and the same bore X stroke.
The cylinder head bolts are also located on the same place.

JUST ONE MORE THING:

In the age of which 'part' is speaking of, Steyr was trying hard to reach the technology level of Zetor. They succeeded in 1974, when the new 8000/8100 series was introduced.

In the same year, Zetor introduced the 12045 Crystal, with the same technical advances, such as 16/8 transmission with 2 stage powershift, 540/1000 rpm PTO, hydraulic PTO engagement, MFWD, safety cabins with flat floor design. The 12045 was based on the 8045, from 1968. And that was earlier than Steyr.The 8011 Crystal was also the first in the world to meet the N85 noise level requirements.

Since 1972, Zetor also offered the 1000/540 PTO, 20/4 speed transmission with pneumatic multipower, MFWD, flat cabin floor design on the small UR1 models 4712 to 6748.

So, Steyr was getting technically more advanced than Zetor in the early eighties. (Communism showed its first signs that it was getting on its end)

Ursus has nothing to do with the development of the Crystal, they were just producing Zetor designs. In fact, they have never developed anything by themself, the first tractors they produced were Lanz hotbulb license, produced till 1959. The Ursus 355 and 360 are copies of the Zetor 4511. The current small series are MF 200 series license.

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