Skymaster 1:7.5 F-4 Phantom
#28
My Feedback: (1)
Skymaster was being very conservative with the recommendations. I would be a little afraid of 280 as it is very nose heavy. So many guys have moved the CG back that I would feel Skymaster may want to change their recommendations to say 310-330. I have heard of some back as far as 350 but I would start 310-320 for those that don't want to go to 340 to start but you will eventually move back from there. Although you may like a nose heavy plane and if that's your style OK
#35
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Join Date: Jun 2002
Location: Putnam Valley,
NY
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Jeff, can you give me the gain settings you are running for the Igyro? I had one in my Edwards F4 but I sold it and don't have the numbers. Im not a fan of the test fly asst.
Thanks Don
Thanks Don
#38
My Feedback: (53)
That will eventually change with the new DITEX Hacker servos once the Telemetry (JETI software update when???) for the servo is available. I have a bunch of those for my next build.
#41
My Feedback: (11)
Yes, that all sounds very reasonable.
The problem with skymaster’s CG and pipe is:
CG: At their CG recommendation, with full flaps, the airplane will lose elevator authority and it won’t be to pull up if the nose drops. Hence, your CG is better.
Pipe: SM’s pip has a bend in it. If it isn’t place so the bend is down, the F-4 will want to climb with power. Tam’s pipe is straight and people report no climbing with Tam’s pipe.
Go fly it! You will love it!!
#42
My Feedback: (1)
I love mine so much I ordered another. This one will be totally decked out lighting and full ordinance. I would put CG at 340 and never look back. Use Tam pipe with 5 degrees down angle or skymaster with bend going down.
My tanks feed saddles and then the front. Fuel for long flight with K210 7 plus minutes
Hope this helps
My tanks feed saddles and then the front. Fuel for long flight with K210 7 plus minutes
Hope this helps
#43
My Feedback: (28)
Thanks Kevin. I think i will stay at 320 for the first flt since my cg will move back as fuel is burned from the main tank first. At least i am in the ball park. I need to add 3# to the nose to get it to the 320 point. Was really surprised with that. I dont have a cockpit kit yet but it is still fwd weight but at least it will be useful weight. If anyone has a cockpit from a departed one please let me know. Also pylons and wing tanks.
#46
I love mine so much I ordered another. This one will be totally decked out lighting and full ordinance. I would put CG at 340 and never look back. Use Tam pipe with 5 degrees down angle or skymaster with bend going down.
My tanks feed saddles and then the front. Fuel for long flight with K210 7 plus minutes
Hope this helps
My tanks feed saddles and then the front. Fuel for long flight with K210 7 plus minutes
Hope this helps
#48
The guy that worked at Tams is now on his own . He is on facebook. He just did a pipe for the F4 7.75.
Hiep custompipe
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Shanehendo (03-01-2024)
#49
My Feedback: (1)
Well now that I bought Skymaster pipe I’m going to try it. Yes motor stock location and bend in pipe does 5 degrees. I will measure and may need to shim pipe and motor to match to get 5 degrees down angle total at exit. You can call me if you have any questions
kevin thoele 281-615-8455
kevin thoele 281-615-8455
#50
Well now that I bought Skymaster pipe I’m going to try it. Yes motor stock location and bend in pipe does 5 degrees. I will measure and may need to shim pipe and motor to match to get 5 degrees down angle total at exit. You can call me if you have any questions
kevin thoele 281-615-8455
kevin thoele 281-615-8455