I have used the shut-off system in 5 World Cup competitions this year.
Here is some experiences from these events.

• Bitterfeld, Germany:
  • First competition with the new shut-off system.
  • Before the competition it took a long time to adjust all 10 systems to react at the same line tension.
  • In one flight I pulled a little too hard at the handle and killed the engine just seconds before the start.
  • I found out, the hard way, that a damaged model generates less line tension than normal.
  • Photos and results
  
  
• Karlskoga, Sweden:
  • A very strong wind but no problems with the line tension
  • Could even make small loops into the wind
  • Photos and results
  
  
• Aalborg, Denmark:
  
  • No problems with the shut-off but I lost to Trifonow and Monique in the first two rounds.
  • After the competition I made a "let-go-off-the-handle" demonstration for the Swedish officials and others.
  • Photos, photos and more photos. - Results
  
  
• Sebnitz, Germany:
  • Mechanics are now familiar with the system and flying with the shut-off is no problem.
  • A Czech pilot is also flying with shut-off. Same principle but a simpler construction. More info
  • Photos and results
  
  
• Dreilander Pokal. Karlskoga, Aalborg and Sebnitz
  • Three World Cup competitions in three countries - three weekends in a row !
  • A very fascinating experience - and a tough game !
  • Results
  
  
• Dronten, Holland
  • In a flight my mechanic managed to damage the shut-off resulting in an engine stop and some time lost on restoring the fuel supply and restarting.
  • I lost that fight in the air but this problem could have been fatal.
  • Results and photos
  
  
• Khimki, Russia
  • 92 pilots !
  • I did not bring models to Moscow but got new models directly from Ukraine.
    No time to rebuild the new models so this was the first competition this year without the shut-off system!
  • 2. round: A chaotic match ended with a collision where my model got cut off the lines!
  • Reflight: Almost a repetition of the first flight and again my model was cut of the lines!!!
  • First competition without the shut-off and I got 2 flyaways - unbelivebel!
  • Results