Hi Jan you are a friend, thanks for the fast reply.
In italy we buy the Navy Esc at 57,00 euro.
Good the joke on " 12 cell adventure for speed 600" this is like a film " The Speed 600 and 12 cell.... will remain one only!"
Our 600 8.4 can run max 16 volts, the next step maybe the speed 700.

I notice you about the next result....

Bye Rocco.