Hello John,
Thanks to Georg Vollnhals I found your emailadres, but becayse I didn't get an answer I try to reach you through the mailinglist.
I know/saw you made/make a wonderfull cockpit based on the 747 in FlightGear. A few months ago I started with making a new 747-400 for FlightGear. You could see some of the results I got so far in this topic on the FG-forum.
I already got the outside model done (need some more details on wings, doors and gear), the FDM of the existing 747 and a (basic) 3D cockpit. But there are some issues that I need to solve if I want to make a realistic plane.
As you should know the 744 got not only nosewheel steering, but also steers with the inner maingear. But these wheels are blocked during takeoff and landing. So you could only steer with the maingear during taxi. I made the gear steer with JSBSim, but now I need to do something to block the gear during TO and landing. Do you have any idea how to do that? And is there a special switch in the cockpit that blocks the gear or is it an automatic system?
I also have a problem with the fuel tanks. I know there are 8 (and optionally 9) fuel tanks. 3 in each wing, 1 in the tail and 1 or 2 in the body. But if I make 8 tanks in the FDM the tanks 4, 5, 6 and 7 don't work. Only 0, 1, 2 and 3 are being used. But if we want the fuel system as on the real plane we need more than 4 tanks. Because tanks are used to stabilize the plane etc. we need multiple tanks. Do you have the right number of tanks in your FDM?
There are some more problems, but they're not that important as the ones I described above.
I don't know how far you changed the 747 that's available on the FG download site. But I can imagine that you have improved the FDM to make it suitable for your cockpit. Maybey you got some things in your FDM that I could use... You might also have some extra drawings, photo's or other info that I could use. Please send me if possible, I need a lot more than I got. Especially information and measurements of cockpit instruments.
Please let me know if you could help me. I would be really thankfull! The new model might look better in your cockpit to?
Thanks in advance and happy flying!
Gijs de Rooy

btw: sorry if my english isn't correct all time ;)

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