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RE: Fly Eagle F-15 (1/9) Building Thread - 6/13/2010 7:37 PM   
G200flyer


 

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Status: offline 		Awesome picts Lavi, thanks for posting them. Your bird looks great!


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RE: Fly Eagle F-15 (1/9) Building Thread - 6/14/2010 12:34 AM   
lavi rider


 

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Status: offline 		I just wish it actualy was mine but....it ain't some other lucky fellow is the proud owner ......

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/29/2010 3:38 PM   
Gregdonaldson


 

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From: johannesburgjohannesburg, SOUTH AFRICA
Status: offline 		Just finishing off a F15 for a customer,just need to do a little yiding up of the emcotec and reciver wiring.
What is the best CG that you guys are flying with?the manual says 150-160 but that seems very nose heavy to me.

Regards Greg

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/29/2010 5:59 PM   
In the Haze



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Status: offline 		Nice Greg I like the mounts for the various fill valves and pressure guages.

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/29/2010 9:48 PM   
G200flyer


 

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From: Charles Town, WV, USA
Status: offline 		Hey Greg,

757driver posted this a while back:

"I must also strongly reccomend that you set the CG at 175 to 185mm. Now I must get on my soapbox for gear up vs gear down, fuel vs no fuel. Guys its really all about apples compared to apples. Your not going to fly the jet on the CG table. If we didn't have any idea of where the CG needed to be set I would agree that the check needs to be in a flight condition. I would stipulate full full and gear down as that is how the airplane will first see the air just after takeoff. However we know where it needs to be as does Yellow aircraft. Same bird same scale same aerodynamic qualities. Yellow CG's their airplanes with gear up and all fuel tanks empty. This is obviously not how it is going to fly but it establishes a benchmark and a standardized condition to set the CG. They uses 7.25" (184mm) from LE measured at the wing root. Put the wing on the jet and mark the leading edge location with a peice of masking tape. Measure aft from there. My airplane was almost unflyable at 165mm. It will be totally safe at 185 based on my flight test at 165. The airplane builds nose heavy which is safe but you will be lucky to rotate the airplane at 150 and get it off the ground at a speed less than mach 2."


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RE: Fly Eagle F-15 (1/9) Building Thread - 6/29/2010 10:31 PM   
Gregdonaldson


 

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Status: offline 		Thanks ITH,i needed to come up with something to keep everything out of the canopy. Once the pilot is in its a mission to get in there to switch anything on or pump the gear.

Thanks G200flyer,ill set it on 185.Didnt realise that it was the same scale as yello aircraft.

Regards Greg 

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RE: Fly Eagle F-15 (1/9) Building Thread - 7/18/2010 12:31 PM   
rastus21


 

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From: Alice Springs, AUSTRALIA
Status: offline 		Anybody on here done one of these with EDF? I was thinking of doing one with the new Ramtec EDF system. Reportably putting out 22lbs of thrust.
Can it be done?
Matt

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 12:30 PM   
extra 300


 

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From: BeirutBeirut, LEBANON
Status: offline 		Could anyone advise which F-15 1/9 scale would be better/more reliable between an FEJ and a Feibao??

Thanks advising differences/advantages.

Regards,

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 1:24 PM   
KC36330



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quote:

ORIGINAL: extra 300

Could anyone advise which F-15 1/9 scale would be better/more reliable between an FEJ and a Feibao??

Thanks advising differences/advantages.

Regards,



Take a look at Jet Legend.

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 1:38 PM   
Hot Rod Todd



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Status: offline 		I have an older FEJ, but the newer models have a stronger honeycomb construction that FEJ claims is lighter. The gear door pistons and landing gear are also improved over what was once provided. I would think the new FEJ model is a good value.

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 4:31 PM   
extra 300


 

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Status: offline 		KC36330, Hot rod Todd,

Thanks for your replies. Issue is that i have an opportunity to buy one of the 2 brands and would like some comparison as regards to weight, strenght, features and reliability.

Hope that someone could shed some light enabling facilitate choice....

Thanks, regards,

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 4:44 PM   
KC36330



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Status: offline 		if it's a new FEJ carbon/honeycomb design it's lighter and stronger, they seam to have worked out a lot of bugs but sometimes their quality control still takes a few days off here and there.

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RE: Fly Eagle F-15 (1/9) Building Thread - 11/3/2011 5:44 PM   
FenderBean



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From: midland city, AL, USA
Status: offline 		FEJ 1/7 scale F-15 shall be mine! oh yes it shall. Rocking a tribute scheme!! It will be more than meets the eye


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RE: Fly Eagle F-15 (1/9) Building Thread - 6/14/2012 2:51 AM   
Veritech



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Status: offline 		All,
I have a FEJ F-15 (1/9) and am looking for the control throws. The manual I got from their site doesn't seem to list it.

I am currently only getting about 10mm up and 10mm down on my ailerons. This seems like it is way to little movement to me.

Thanks,
Randy

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/14/2012 4:27 AM   
FenderBean



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Status: offline 		actually not my f-16 only had 16mm


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RE: Fly Eagle F-15 (1/9) Building Thread - 6/14/2012 1:27 PM   
Hot Rod Todd



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Status: offline 		I think I had a bit more than that for my max throw, but after flying the plane found that the ailerons are plenty responsive. I would have to measure, but I believe I ended up at about 12mm up and 12mm down. Had a successful flight from my home runway last week. Here's a couple photos.

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/15/2012 2:56 AM   
Veritech



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Status: offline 		Thanks Hot Rod!
If you could measure your throws for the ailerons and elevators when you get a chance that would be awesome. I am hoping to get her all finished by next weekend and do the maiden before Winimac on the 29th.



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RE: Fly Eagle F-15 (1/9) Building Thread - 6/16/2012 2:21 AM   
Collinba


 

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From: Toronto, ON, CANADA
Status: offline 		Hot Rod Todd. Any tips on flying the F15. I have the exact same plane, including colour scheme and intend to get it up for the first fight this month. Ground handling, landing speed, flaps? Would appreciate any insights on getting it up and down.

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/18/2012 1:45 PM   
Hot Rod Todd



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Status: offline 		I only have four flights on it, but was able to get two yesterday and start getting a feel for the best way to get it up and down smoothly. My early taxi tests indicated it was a bit squirlly on the ground. I had angled the gear out a bit to widen the track, but it still wanted to tip when steering. I slowed down the rate on the nose gear, and added a gyro to the nose gear servo. So far it has tracked straight on takeoff. It becomes important, because I crank up the turbine with the brakes on and let it go. I need to pick up plenty of speed to take off in less than 500 ft. Mine is quite heavy at a bit over 30 lbs dry. Another thing I did to help was I stiffened up the main gear. I found some fuel tubing the right size, and added it inside the struts to make them stiff enough that they would not compress with the weight of the plane when full of fuel. That also helped the ground handling because before making them stiffer it would want to roll a bit when steering compounding the poor ground handling.

Once airborne I drop the elevator rate down a bit for flight. I go back to high rate on landing. Ailerons are quite responsive, so I found I can leave them on the lower rate (I still need to measure those throws). With the Jet Central Cheetah (31 lbs thrust) it is very fast. I only use wide open throttle a couple times on each flight. I haven't measured the speed yet, but I'm sure it's in excess of 170 wide open.

For landing, it seems to slow quickly once the gear is up. I back of the throttle to burn off a bit more speed and add a bit of flap. It doesn't seem to need any more than half flap (about 30-40 degrees). I then feed some more throttle back in as it gets into a higher alpha attitude. It sinks fast, and you have to be quick to make sure you get a bit of flair right before touchdown. Once down the brakes are very effective and mine slows down in a straight line.

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RE: Fly Eagle F-15 (1/9) Building Thread - 6/20/2012 2:11 AM   
Hot Rod Todd



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From: Robins, IA, USA
Status: offline 		My throws were more than I thought. Here's what I'm using.

Ailerons: High 35mm, Low 22mm
Elevator: High 60mm (all I can get) Low 50mm
Rudder: 22mm
Flaps: 45-50 degrees on full

I have triple rates, so there is one in between. At high rate aileron is pretty hot, low rate is more normal.
I use high rate elevator to take off and land, low to fly.
Down elevator deflection is a bit less than up.

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RE: Fly Eagle F-15 (1/9) Building Thread - 10/5/2012 4:12 PM   
Lil Hoss



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From: Racine, WI, USA
Status: offline 		Hey Guys,,,,
Is this thread still alive??
I just ordered FEJ F15.
Just wondering how the F15's are holding up

Thanks

Hoss

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RE: Fly Eagle F-15 (1/9) Building Thread - 10/18/2012 4:29 PM   
danisegal


 

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From: , SOUTH AFRICA
Status: offline 		Hey Guys

Does anyone have the weight of the Advanced Kit as it comes from the factory, ie with the retracts, tank and all included or even a close estimate (not sure if the 4420g listed is inclusive or not

Also when a supplier states the weight of a turbine, does this include the pump, lipo etc

Im looking into buy this kit but am affraid my turbine wont have enough thrust, doing some heavy maths at a best and worst case senario

Thanks guys and thanks for a great thread

Regards

Dani

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RE: Fly Eagle F-15 (1/9) Building Thread - 10/18/2012 6:45 PM   
rhklenke



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Status: offline 		What is the thrust of your turbine? 27-30 lbs thrust is perfect for this airplane - you will be disappointed with much less than that...

Bob

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RE: Fly Eagle F-15 (1/9) Building Thread - 10/18/2012 7:20 PM   
danisegal


 

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Status: offline 		I guess I'm gonna be very upset

I have a Jetcat P80

That's Y I'm asking about the kits original weight. I really really like this kit. I'm told its a nice plane to fly as a jet noob, I've got access to a very very nice long tar runway. Will it fly on that turbine if I build it real light.

How will it do with a wren 160. I want to start on the p80 and then make it hot with the 160 when I got the money

Thanks so much for the reply

Dani

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RE: Fly Eagle F-15 (1/9) Building Thread - 10/18/2012 7:30 PM   
rhklenke



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quote:

ORIGINAL: danisegal

I guess I'm gonna be very upset

I have a Jetcat P80

That's Y I'm asking about the kits original weight. I really really like this kit. I'm told its a nice plane to fly as a jet noob, I've got access to a very very nice long tar runway. Will it fly on that turbine if I build it real light.

How will it do with a wren 160. I want to start on the p80 and then make it hot with the 160 when I got the money

Thanks so much for the reply

Dani


It definitely will fly with a P-80. Takeoffs will be a bit on the long side and the verticals won't be too good, but it will fly fine and will be a good jet to learn on. However, the plane really comes alive with a 120-class turbine. A 160-class turbine will fly it nicely too, but you'll have to be *very* careful to limit speed or you will pull it apart - especially the FEJ one...

Bob

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