THE GENERAL'S Fei Bao 1/7th F-15 Build,Test Results, and Video
#301
My Feedback: (25)
RE: Fei-Bao 1/7th F-15 Build
ORIGINAL: dos007
Lewis and other F-15 builders, I am just starting my Fei Bao F-15E, the kit is one of the earlier models that I bought from Wagner when he was in business. After much delay I am finally get this thing built. I just wanted to know if there are any issues I should be aware of before the maiden flight. I had heard of the UC issue so I got new main retracts and a nose strut from GJC.
I have read this thread and some others just trying to make the build a success. Recently on another thread, that was very old, someone stated a problem with the main wheels and brakes...is this something to be concerned with?
Thanks for any help you can offer.
Lewis and other F-15 builders, I am just starting my Fei Bao F-15E, the kit is one of the earlier models that I bought from Wagner when he was in business. After much delay I am finally get this thing built. I just wanted to know if there are any issues I should be aware of before the maiden flight. I had heard of the UC issue so I got new main retracts and a nose strut from GJC.
I have read this thread and some others just trying to make the build a success. Recently on another thread, that was very old, someone stated a problem with the main wheels and brakes...is this something to be concerned with?
Thanks for any help you can offer.
dos007,
I was there for the maiden of Lewis's F-15 and saw some of his subsequent flights. The initial problems that I remember that Lewis encountered were the retracts not wanting to rotate. I think he resolved to having a non rotating gear, and still flies it that way to this day. Second, was that he had a wheel bearing sieze up. The bearings in the earlier versions were simply not up to the task for the weight. Lastly, after several flights, I recall he had an H-stab pivot mechanism work loose. Seems the bolts were not loctited. These are the only problems that I recall, and I'm sure Lewis will eventually chime in and correct me if I missed something. I also believe that Lewis used 8711 servos on the H-stabs and 8611A on all other surfaces.
#303
Thread Starter
RE: Fei-Bao 1/7th F-15 Build
ORIGINAL: dos007
I am going with a single setup...AMT OLY. I hope lewis chimes in with some sugeestions. I wanted to maiden this plane at the MAB meet in two weeks.
Where did you get the electric rams?
I am going with a single setup...AMT OLY. I hope lewis chimes in with some sugeestions. I wanted to maiden this plane at the MAB meet in two weeks.
Where did you get the electric rams?
Lewis
#304
Thread Starter
RE: Fei-Bao 1/7th F-15 Build
ORIGINAL: dos007
What servos are you guys using for the rudders. I was going with 8411's but they don't fit, at least not with out a lot of cutting.
What servos are you guys using for the rudders. I was going with 8411's but they don't fit, at least not with out a lot of cutting.
I also use non rotating gear, J & R Hobby Supply wheels and brakes, and Robart 635 retracts. I now just go out and have fun! Before leaving Feibao productsI helped them with the new gear, and it appears to be working fine.
#306
My Feedback: (1)
RE: Fei-Bao 1/7th F-15 Build
Has anyone tried converting the rotating retracts to electric? Results? I have one and the retracts wont go up. Nose does but not the mains. I have already thrown away the wheels and brakes and I guess now the retracts will have to meet the same fate. Pretty much crap from a manufacturer that will not test and perfect expensive gear before selling to the public.
#309
My Feedback: (3)
RE: Fei-Bao 1/7th F-15 Build
Kevin,
I am currently studying possibility to send them over to http://www.e-retract.com/en/ for e conversion.
Regards,
I am currently studying possibility to send them over to http://www.e-retract.com/en/ for e conversion.
Regards,
#310
Join Date: Jun 2008
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RE: Fei-Bao 1/7th F-15 Build
I have this jet and I love it. GO OVER EACH SCREW FOR THE ELE MOUNTS, WING MOUNTS AND FIN MOUNTS. I GUARANTEE YOU THEY ARE LOOSE.
ALSO WITH THE GEAR. IF YOU HAVE A NEW ROTATION GEAR, IT DOES WORK FINE, HOWEVER YOU NEED TO GO AND TIGHTEN AND POSSIBLE BLUE LOCK TIGHT THE SET SCREWS THAT HOLD ON THE AXLES.
AND ANY OF THE WHITE SCREWS. IT WILL TAKE YOU ABOUT 6 FLIGHTS BEFORE YOUR WHEEL WILL FLY OFF DURING TAKE OFF. BEEN THERE DONE THAT.
IF YOU GO AND TAKE THE AXLES OFF AND DREMEL A FLAT SPOT WHERE THE SET SCREW TIGHTNS AND LOK TIGHT IT. YOU WILL NOE LOOSE YOUR WHEELS.
OTHER THAN THAT, THE JET IS SOLID.
LOVE THIS THING
MIKE
ALSO WITH THE GEAR. IF YOU HAVE A NEW ROTATION GEAR, IT DOES WORK FINE, HOWEVER YOU NEED TO GO AND TIGHTEN AND POSSIBLE BLUE LOCK TIGHT THE SET SCREWS THAT HOLD ON THE AXLES.
AND ANY OF THE WHITE SCREWS. IT WILL TAKE YOU ABOUT 6 FLIGHTS BEFORE YOUR WHEEL WILL FLY OFF DURING TAKE OFF. BEEN THERE DONE THAT.
IF YOU GO AND TAKE THE AXLES OFF AND DREMEL A FLAT SPOT WHERE THE SET SCREW TIGHTNS AND LOK TIGHT IT. YOU WILL NOE LOOSE YOUR WHEELS.
OTHER THAN THAT, THE JET IS SOLID.
LOVE THIS THING
MIKE
#312
Join Date: Dec 2004
Location: PlaistowWest Sussex, UNITED KINGDOM
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RE: Fei-Bao 1/7th F-15 Build
A lot of truth in what has been said in the later threads. I now have 6 flights on mine. I lost the nose wheel on the second flight. I have bolts with nuts now keeping the wheels on and have changed the wheel bearings to sintered bronze after the originals disintegrated. Although my undercarriage (twist and turn) works fine on the stand, it will not budge in flight and I am presently converting to hydraulic. I am flying with the CG at 240 mm behind the leading edge and I feel it would fly better if I move it slightly forward. My wing mounting bolts have needed tightening and the stabs were aligned at different heights and needed the formers removing, and remaking with the stabs mounted correctly.
On a positive it fly's and lands fine.
John
On a positive it fly's and lands fine.
John
#313
My Feedback: (24)
RE: Fei-Bao 1/7th F-15 Build
OK this is the build that just keeps on giving...but from what everyone says is that it flies great!
I have installed my elevators and after tightning the bolts I still have a little play in the surface. the pin is not quite the same width as the notch in the elevator rod. It is not much play but I am just wondering if you guys had this and did you leave it alone or is there a fix?
Also my pipe is too long so it looks like I will cut it down some and then cut the inlet ducting as well. The big old OLY takes a lot of room!
I have installed my elevators and after tightning the bolts I still have a little play in the surface. the pin is not quite the same width as the notch in the elevator rod. It is not much play but I am just wondering if you guys had this and did you leave it alone or is there a fix?
Also my pipe is too long so it looks like I will cut it down some and then cut the inlet ducting as well. The big old OLY takes a lot of room!
#315
My Feedback: (2)
RE: Fei-Bao 1/7th F-15 Build
ORIGINAL: dos007
OK this is the build that just keeps on giving...but from what everyone says is that it flies great!
I have installed my elevators and after tightning the bolts I still have a little play in the surface. the pin is not quite the same width as the notch in the elevator rod. It is not much play but I am just wondering if you guys had this and did you leave it alone or is there a fix?
Also my pipe is too long so it looks like I will cut it down some and then cut the inlet ducting as well. The big old OLY takes a lot of room!
OK this is the build that just keeps on giving...but from what everyone says is that it flies great!
I have installed my elevators and after tightning the bolts I still have a little play in the surface. the pin is not quite the same width as the notch in the elevator rod. It is not much play but I am just wondering if you guys had this and did you leave it alone or is there a fix?
Also my pipe is too long so it looks like I will cut it down some and then cut the inlet ducting as well. The big old OLY takes a lot of room!
Shaz
#317
RE: Fei-Bao 1/7th F-15 Build
#320
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RE: Fei-Bao 1/7th F-15 Build
Has anyone gone with down and lock yet?
My gear is acting up bad, I have a good amount of slop as well, in the clockwise and counter clockwise rotation of my mains.
i think its the top piece that has the ball on it, also holds the gear in the jet.
Any feed back ?
My gear is acting up bad, I have a good amount of slop as well, in the clockwise and counter clockwise rotation of my mains.
i think its the top piece that has the ball on it, also holds the gear in the jet.
Any feed back ?
#321
Thread Starter
RE: Fei-Bao 1/7th F-15 Build
ORIGINAL: michaelsarysz
Has anyone gone with down and lock yet?
My gear is acting up bad, I have a good amount of slop as well, in the clockwise and counter clockwise rotation of my mains.
i think its the top piece that has the ball on it, also holds the gear in the jet.
Any feed back ?
Has anyone gone with down and lock yet?
My gear is acting up bad, I have a good amount of slop as well, in the clockwise and counter clockwise rotation of my mains.
i think its the top piece that has the ball on it, also holds the gear in the jet.
Any feed back ?
Lewis
#322
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Hi Lewis
I'm considering a FB F-15E with twin P120SE. I'm curious about your problem with the rotating retracts. Do you apply mainwheel brakes when you initiate retraction to stop the gyroscopic effect of the mainwheels spinning at takeoff rpm? I found that using brakes on my Avonds F-15C cleared up the retraction issue I first experienced with that model. All worked on the ground correctly, but the struts always snagged the gear doors on retraction until I mixed brakes ON.
Regards
Paul
I'm considering a FB F-15E with twin P120SE. I'm curious about your problem with the rotating retracts. Do you apply mainwheel brakes when you initiate retraction to stop the gyroscopic effect of the mainwheels spinning at takeoff rpm? I found that using brakes on my Avonds F-15C cleared up the retraction issue I first experienced with that model. All worked on the ground correctly, but the struts always snagged the gear doors on retraction until I mixed brakes ON.
Regards
Paul
#323
Thread Starter
Hi Paul, Never tried that. Made the switch to Robart 635,s about mid season the first year. It's still flying great, and presently getting the Mammoth Pro upgrade.
Lewis
Lewis
Hi Lewis
I'm considering a FB F-15E with twin P120SE. I'm curious about your problem with the rotating retracts. Do you apply mainwheel brakes when you initiate retraction to stop the gyroscopic effect of the mainwheels spinning at takeoff rpm? I found that using brakes on my Avonds F-15C cleared up the retraction issue I first experienced with that model. All worked on the ground correctly, but the struts always snagged the gear doors on retraction until I mixed brakes ON.
Regards
Paul
I'm considering a FB F-15E with twin P120SE. I'm curious about your problem with the rotating retracts. Do you apply mainwheel brakes when you initiate retraction to stop the gyroscopic effect of the mainwheels spinning at takeoff rpm? I found that using brakes on my Avonds F-15C cleared up the retraction issue I first experienced with that model. All worked on the ground correctly, but the struts always snagged the gear doors on retraction until I mixed brakes ON.
Regards
Paul