Last update: 5/2 2009
New build in instruction
New let-go-of-the-handle video
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
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.
The concept of the system is simple but it is very difficult to build the wings with the right cams.
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
See the test flight and the "let go of the handle" test: