3 axle Fendt TRISIX Vario

[Robert_in_NY]

Robert, the one you showed would allmost be an insect, as its an RC model

Here is a pic of the 1967 model 8x8 813 in the European Truck Trial competition: 90% of the competition is Tatra 813
YouTube - Truck Trial Balve 2007 3

Darn it, I linked the wrong clip.

Did you look at how he built that truck. He made all the axles so that they are all operational and lifelike. I am always amazed at what these RC guys can do.

YouTube - Tatra T813 Kolos 1:10 wheel test ...

This one is really amazing when you think of the scale they are building in

YouTube - Test of T813 backbone tube Part 1 www.rc-trial.pl

 

[mjncad]

The Tatra drivetrain concept is definitely interesting. If I recall correctly, Tatra is a Czech and/or Slovakian company and I wonder if being behind the Iron Curtain for decades hindered the acceptance of this drivetrain design or if there are other technical issues related to the design.

 

[Renze]

There are more interesting facts about the Tatra company:

Did you know that:

-Tatra is supposedly the only manufacturer in the world to build AIR COOLED engines complying to the Euro 4 emission standards ??

- Tatra builds their engines with roller bearings on the crankshaft ?? (This makes them less sensitive to variations in the viscosity of the engine oil, depending on temperature differences in Sahara or Siberia)

-tatra introduced the first streamlined car body in 1937 ? YouTube - Tatra 87 - from Ecorra

-that this car had an aluminium overhead cam V8 ?? YouTube - Tatra 87 - from Ecorra /engine/

-The law court about the Volkswagen Beetle violating about 20 Tatra design patents, was finally settled in 1961 when VW payd 3 million Reichsmark to Tatra ?

Ferdinand Porsche was ordered to design a peoples car, by Adolf ******. Porsche was a friend of Hans Ledwinka, chief designer at Tatra. They shared a lot of their ideas as friends. When Porsche was put under pressure by ****** to design that peoples car (volkswagen) in a short time, he allmost copied the blueprints of his friends design, the Tatra prototype TV 570, violating allmost 20 patents. The law court problem was solved when ****** aquired Czechia in 1939 in pursuit of the technologically advanced heavy industry of the Moravian region, as well as natural resources.
When Czechia was taken over, all patents were confisquated.

 

[Renze]

I wonder if being behind the Iron Curtain for decades hindered the acceptance of this drivetrain design or if there are other technical issues related to the design.

In the days of leaf springs, the issue was uneven tire wear, because it rode on the outer tires when the truck was empty: With self levelling air suspension, this problem is solved.

 

[Grrrr]

Interesting concept behind the TRISIX but I can't see it getting anywhere.

It is difficult enough getting round roads in 180 HP tractors here. Both wheels are up in the hedges. That thing would be impossible. When we take the combine out in the summer we virtually have to shut the roads and each year the road gets a little larger from the wheels. The forage harvester is the same, last year we had to take out 6 gate posts just to get the harvester in to the fields. I know we live in a area with very narrow roads but it is similar for much of Europe.

The few places that do run QuadTracks in the UK have excellent fun moving them around, there was a guy on another forum I am on who ripped a track clean off one when it caught on the side of a road.

And in countries that you could use it in, why not just go with a conventional tracked tractor / high horsepower tractor?

 

[radman1]

Grrrr

Tracked tractors are not real common where I live. Quite expensive and in corn fields the tracks tend to get entangled with the stalks during tillage. The stalks cause excessive wear on the pulleys and tracks and literally can destroy them. They tend to get caught/bound in the mechanism. It is hard to imagine a dead, light weight corn stalk causing damage. When there are millions of them, they take their toll on the undercarriage. They can get so tightly wedged, that they can litterally stop the tractor.

 

[Grrrr]

Grrrr

Tracked tractors are not real common where I live. Quite expensive and in corn fields the tracks tend to get entangled with the stalks during tillage. The stalks cause excessive wear on the pulleys and tracks and literally can destroy them. They tend to get caught/bound in the mechanism. It is hard to imagine a dead, light weight corn stalk causing damage. When there are millions of them, they take their toll on the undercarriage. They can get so tightly wedged, that they can litterally stop the tractor.

I am sure they do. I know how tough those corn stalks are.

I was more meaning that the just the big articulated tractors used at the moment are probably better for big fields and smaller conventional tractors for small countries