Last update: 5/2 2009 New build in instruction New let-go-of-the-handle video	Ettore Mancini	Ettore Mancini from Italy has designed a very nice shut-off system. It can easily be retrofit into you existing models or build into new models. The best part is that he is going to make a small production for sale ! Contact Ettore Mancini for more information. Update: AA F2D SHUT OFF 2010
Ettore Mancini: This mechanism works with the concept of levers and arms rotation, in practice, the strength of the spring is reduced by 1/5 and then at 400 g tractive mixture of the tube is closed with a force of 2000 g. The total weight of the shut off is 25 g and not change the behavior of the model because it is mounted on the center of gravity. To mount the shut off it is enough to make two 3 mm holes on the central rib. The concept of the system is simple but it is very difficult to build the wings with the right cams. That is why I designed them and I made the laser cut so that the components work well. To block the open system with one hole with a 2 mm pin steel threads, though careful to #5 photos you can see it near the tube of the fuel. Before launching the model simply pull the pin and the system begins operation. I will make a production of 50 pieces for sale at around € 20.00 each. 15.00 € for more than 10 pieces Instructions on how to build the shut-off into a model (pdf) and New build in instruction (pdf).                   See the test flight and the "let go of the handle" test:

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Shut-off start - F2D.dk