Hello everybody

Thanks to all for your comments. They make more easy to build this aircraft.
I'm in middle of the process, because i was waiting to receive the Century Jet landing system for it.
What i found out, it is that the motion of the retract gear it is too fast and it doesn't look real.
My idea was modify the speed of each retract, so they will open or close at diferent speed and a different time, looking more real.
I would like to know if someone has implemented this in his Hellcat or another model, using some kind of Control Valve in each gear.
If you can give links or webs where order or explain how to do it will be appreciate.

Also sorry for my english, i'm from Spain.

Salute.