Call for Competition 2018

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The machine

The competition task is to devise a machine combination that can perform certain functions of a self-propelled combine harvester (thresher-harvester). The machine combination has to consist of 3 units: the central unit that performs most of the functions (hereinafter referred to as “combine”), an “adapter” (combine head) that carries the product into the main unit, and a trailer that serves for carrying the adapter and is towed by the combine.

There is no specification for the dimensions, weights, raw materials, labelling or decora- tion etc. of the machines – the competitors’ duty is to create their construction in compli- ance with the requirements set out in this Call for Competition and the final tests.


Specification of the combine:

  • It sorts the two kinds of product coming from the adapter (wooden cubes and tennis balls) into separate tanks (there is no requirement for the shape etc. of the tanks). This function cannot be manual, i.e. it must not be operated by hand or a hand-held device.
  • The material flow has to take place in a closed duct. The application of easy-to-open covers, transparent sidewalls etc. is permitted, but it is not allowed for the operator to touch the products by hand during operation.
  • It has a removable container for the products, thet can be emptied by hand.
  • It needs manpower for relocation. The operator providing manpower must not get in contact with the ground during the motion of the machine. It is not allowed to use any energy storage component that has been loaded by the start of the individual tests. There is no similar stipulation for the other functions. Other energy sources or energy storage components may be installed for them.
  • It is equipped with a fixing brake that is capable of keeping it in place together with the operator and the towed trailer (with the adapter on it) on a slope of 20%.
  • There is an M16 threaded hole with a length of at least 10 mm, parallel with the direction of travel, at a height between 200 and 400 mm on the front and back of the combine, suitable for fixing an eyebolt.
  • It is suitable for driving the adapter.
  • It facilitates the fastening of the adapter.
  • It is capable of taking off the adapter directly from the trailer and to put it back there after the harvest.
  • It is capable of towing the trailer behind it.
  • It has a roll cage that protects the driver in the case of overturning.
  • It has a safety belt attached at 3 points at least (and it must be fastened during each competition event).

Specification of the adapter:

  • It transfers the product from the paved ground into the combine.
  • The operator must not touch any part of the adapter by hand or with any hand-held device during operation. It may only be operated through the controls that form an integral part of the combine.
  • It must be designed so that it can be fixed to the combine and/or the trailer.

Specification of the trailer:

  • It is suitable for the safe transport of the adapter.
  • It facilitates the fastening of the adapter.
  • It can be towed by attaching it to the trailer coupling of the combine.
  • It has two axles.
  • It has either two-axle steering or four-wheel steering.

Course of the competition

 Teams of maximum 5 persons can apply for the competition. Students that are registered participants at the full-time training of any institute of higher education at the time for application are allowed to take part in the competition, independent of their course of studies. There is no restriction in respect of nationality, place of residence or institution. Students from different institutions may also form a team.

The competition consists of three rounds: the first round is the designing phase, the second one is the implementation of the machine and the third one is the final.

Designing phase

The teams applying for the competition prepare documentation that clearly describes the functioning and the construction of the planned machine combination. The documentation must give detailed technical answer – item by item – to each point of requirement imposed on the combine, the adapter and/or the trailer. There is no other requirement on the form and/or content of the documentation.

The engineers of the company CLAAS Hungária Kft will assess the applications uploaded to the website until the set deadline. Each team may submit one competitive design. There is no possibility for preliminary assessment of the design.

Team Presentation: 

The Team Presentation would be used for looking up sponsors and partners if the team proceeds to the implementation phase. This will be important to succesfully build the combine. The team presentation is obligatory part of the application process (it does not count in the evaluation, however, it must be sent in with the design). Formal requirements for the team presentetion: maximum 3 A4 pages or 10 PowerPoint / slides. 

The teams the design of which are selected by the Company as most viable (maximum 10 teams) will be invited to the next round, the implementation. These teams will receive a uniform financial support of EUR 240 (HUF 75,000) per team for the implementation of the design, independent of its complexity.  There is no stipulation for the rest of the necessary cost.

Implementation phase

The teams selected for the final have to build the planned machine until the day of the final. The working principle described in the design documentation submitted previously must not be changed during the implementation phase, i.e. the answers to the requirements must not change in respect of the specification given in the competitive design.

Function test:

In the function test phase we expect the real-life tests of the solution principles used in the design that was sent in by the team. Two weeks before the final, the  team should send in a video (maximum 10 minutes) that verifies the solution principles and contains functions tests.


The final

The final will take place on the site of CLAAS Hungária Kft in Törökszentmiklós, where – in addition to the teams and event organisers – media representatives, spectators and fans may also be present on the basis of preliminary registration. The Company preserves the right to limit the number of fans/spectators per team.

The delivery of the machines to the site is to be organised individually by each team.

Course of the final

At the start of the final, we present the tasks and the time order, and instruct the teams about safety matters. Then the start order of the teams is determined by lot.

The competition events follow each other in sequence, i.e. each team must carry out the same tests in the same order.

It is prohibited to effectuate any modification in the components of the machines during the final. Occasional repairs may be performed during the tests Mobility and Harvest if the actual operator of the machine is capable of doing such repairs. Parts must not be replaced on such occasions. However, the team members may replace the defective parts for identical parts between the different tests. Naturally, adjustments not involving part replacement (e.g. setting of the tyre pressure, gear etc.) may be performed.

During any repair in the course of a competition event, the machine must be in standstill, i.e. it must not move or be operated! In addition, the clock is not stopped for the time of repair.

The person of the operator may be changed between the competition events.

The team members may communicate with the machine operator during the competition events, but they must not intervene in any other way (by entering the field, repairing the machine, remote controlling etc.), i. e. all functions of the machine must be operated by the operator.

The three tests in the order of execution are as follows: mobility test, harvest and fatigue test. All tests are to be carried out on paved ground (concrete, asphalt or paving stone). We do not disclose the exact place in advance.

For each competition event, the total times used by the teams for the given test, with the addition of any penalty time, are arranged according to length, and the team with the shortest time receives a score of 10, the team with the second shortest time receives 9, and so on down to 1. The scores achieved in a given test are multiplied by the weighting factor as described for each test. If there is a tie at the end of the final, the score received for the harvest test will decide the final order of teams.

Mobility test

This test must be carried out in transport position (i.e. the trailer is coupled to the rear of the combine and the adapter is placed on the trailer). The weighting factor of this test is 2x. The operator has to wear a safety helmet during this test!

At the start of the execution of the test, we check the functionality and good working order of the fixing brake. At first we measure the total aggregate weight of the machine com- bination together with the operator. Then the operator fixes the brake, and the machine combination is pulled forward by a tractor (using the M16 hole with an eyebolt). By means of a load cell installed between the tractor and the machine combination, we determine whether the pulling force reaches 20% of the total weight before the vehicle can be moved.

Then we check the towing capacity of the combine. We attach a fix point in place of the trailer, then we determine if the combine driven by the operator can reach a tractive force of at least 10% of the total weight.

If the vehicle is unable to pass this test, the actual running time of the mobility test is multiplied by 2. This result does not have any other effect on scoring.

The second part of the test is played for time. The vehicle must zigzag between traffic cones – by-passing them from left and right in turn – that are placed on a slalom course at a given distance from each other. The figure below shows the arrangement of the course or its mirror-image.

Turning at the end of the course, the vehicle must be accelerated and then braked to a stop. The time is measured between passing over the start line at the start and the com- plete stop of the vehicle at the end of the test.

Plus 20 seconds are added for each traffic cone that has been hit, touched or missed by the vehicle.

The standard time available for this test is 3 minutes. If the competitor does not complete this course within this time, their time result will be 3 minutes.


The weighting factor of this test is 3x. Harvest is to be performed in the harvesting setup of the machine combination (i.e. the adapter is mounted on the combine and the trailer is put aside).

At the beginning of the execution of the test, the combine must take up the adapter from the trailer. The order of steps are as follows:

  • In the initial setup, the trailer is at a standstill behind the combine and detached from it.
  • The combine approaches the trailer from the proper direction.
  • The operator releases the fastening of the adapter to the trailer (he/she may even go there and do that manually). No physical connection (by wire, rod etc.) is allowed to be between the combine and the adapter at this stage.
  • Sitting in the combine, the operator makes the combine carry out the lifting of the adapter by means of the controls forming an integral part of the combine.
  • The combine moves off from the trailer.
  • The operator fastens the header to the combine.
  • The operator couples the drive train(s) as necessary. This operation must be completed in 10 minutes.

At the end of the harvest, the adapter must be put back on the trailer. The conditions and the starting and closing positions are the same. If either the take-up or the putting back is not completed in 10 minutes, the actual time of the harvest test will be multiplied by 1.3. This result does not have any other effect on scoring.

The product is represented by 100 tennis balls and 100 wooden cubes with an edge length conforming to the diameter of the tennis balls. The tennis balls are mixed of used and new balls of different makes. The wooden cubes have the dimensional accuracy and surface quality that may be expected after saw cutting.

The product is placed on a rectangular field of a given size – at least 6x6 m. The edges of the field are marked by painted lines or other marking that does stand off from the paved surface. A safety border is placed around this field in a distance of 1 m from the edge line: the spectators may view the events from outside of it and it prevents the balls from rolling away.

On the field, each ball/wooden cube is placed in an intersection point of a square grid with a pitch of 300 mm (no object is placed on the edge points). The exact arrangement is not disclosed in advance, but the products will be arranged in the same manner for each team. Any product that may get seriously damaged (burst, broken etc.) during the test will be replaced for a new one.

There will also be other obstacle(s) (that should be by-passed) on the field. We do not disclose their exact type and number in advance. They will be in a distance of at least 2 m from the edge line and from each other.

The following figures only serve as examples, but do not represent the actual arrange- ment in the final.

The task is to load the products into the combine and sort them into two separate tanks. Both of the two tanks must be marked with a circle or a square, respectively, indicating the intended place of collection for the balls and the cubes. If any of the tanks remains empty at the end of this event, the team is given 0 score for this test. The standard time provided for this operation is 15 minutes. 30 extra seconds are added for each object that remains out- side of the tanks, and 10 extra seconds are added for each object that has been sorted into the wrong tank. If a product gets outside of the edge line of the field, no attempt is allowed to take it up again. The combine itself may overpass the edge line but must not touch the safety border. Emptying is not allowed during running.

The operator must not touch the products on the field. Plus 10 minutes are added to the time for each occasion when he/she touches a product. If the duct is blocked, it may be freed manually outside the field, but the products taken out there must not be put into the tanks.

Any necessary repair may only be carried out outside the field, and the machine has to leave the field for the entire time of repair. The operator/driver must indicate the necessity of such repair by lifting his/her hand.

The clock is not stopped for the time of repair.

The time is measured from the overpassing of the marked edge section of the field at the start until the field is left at the same place and the machine is brought to a complete stand-still. If the standard time of 15 minutes expires, the team must not attempt to take up any more products and the machine must leave the field.

After the harvest, the tanks are emptied and the products are counted.

Fatigue test

The weighting factor of this test is 1x. This task is to be carried out in transport position. The operator must wear a safety helmet during this event!

The final task is a fatigue test. Passing over various obstacles, the machine has to keep its ability to move and must not lose any of its components. The following figure shows the nature of the obstacles, but their arrangement and number is not disclosed in advance. This test must be completed in 5 minutes. If the machine breaks down (i.e. if becomes unable to move or loses any of its components) or the time expires, the result will be 5 minutes and 1 extra minute will be added for each unfulfilled obstacle combination.

The left and right wheels of the vehicles must pass over the left and right obstacles, respectively. In the case of three-track vehicles, the middle wheel of the vehicle must pass over at least one of the obstacles. If the vehicle passes an obstacle in any other manner, this obstacle is to be regarded as unfulfilled.

No repair allowed during the execution of this test.