RE: FLy Eagle Jet Models
 

Thats scary to hear as I have them on my Elevators, havn't flown them on the 16 but i have them on my Extremejets F15 Elevators and they are rock solid.
Maby there was some slop in the link or the pivot points weren't optimum.
I am sure such a fine servo will be more than man enough for the job. Remember they didn't have 20+KG servo's only a couple of years ago and F-16's were still flying well.

RE: FLy Eagle Jet Models
 

I use a single 5955 on my 35% planes rudder and its enough even for hardcore 3d

Something went very wrong with that f16 if it burnt a 5955

My FEJ 1/8 f-16 elevators were NOT tight at all in the brass sleeve, especially the R/H one it was VERY loose, I applied a couple layers of CA glue to the shaft and sanded it, now both are tight.

I still havent flown it I'm waiting on the last parts, flutter is never a good thing...

RE: FLy Eagle Jet Models
 

My FEJM F-16 has the original elev linkage and CF stab rods. We found the original pivot arms did not capture the CF rods very well. I almost lost the jet on the first flight. My friend Wayne Lane machined up some new beefy end caps with a set screw in the middle so it will bite into the CF rod and hold the assembly nice and tight. The servos are 8611`s and even though there is still some play in the linkage there has been no issues in the 6 flights in have on the jet. No rudd problems at all either.
V..

RE: FLy Eagle Jet Models
 

Just to answer your point, there is nothing wrong with the 16 as with any servo it just gave up at the wrong time the acft was still flyable and landed ok.

If you had just spent $$$$$ on a jet and a servo failed would you still trust that type??? I have repleced them with JRs and no more issues.

regards
Todd

RE: FLy Eagle Jet Models
 

Hi all bit of help again please got the new springs for the main legs and took the oleos apart last night fairly simple but found hardly any oil in them at all maybe at best a tea spoon full. is that all it needs i am guessing yes as if they were full you would not get any compression. so i guess this is just for a bit of lubrication am i right ?

RE: FLy Eagle Jet Models
 

Suttonr,

If you are talking about the F-15, that is correct, I replaced the springs and did not add any oil. There were enough oil to give the lubrication that is needed and the new springs had adequate strength to provid the compression force. For F-16, the springs were not replaced, but added a bit more oil to get the right compression based on the model weight, mine is a bit heavy due to the RAM750 weight.

Hope that helps,

Regards,
Mike

RE: FLy Eagle Jet Models
 

Mike this is in the f16 they have sent new springs and i have put them back with just again a little oil in them they seem to be working fine and now when compressed down they lift the plane back up to just over 3/4 spring back easily so this should be fine for landings they are not too hard so hopefully it will not jump.

Rob.

RE: FLy Eagle Jet Models
 

If I burnt a 5955 of course I would still trust that type of servo... its a well proven servo, instead of replacing it with an other brand of silimar servo with a less capable gear train I'd investigate what could have caused the failure... very out of balance elevator could have done that. Did you check the batteries after the flight ? If the servo shorted/ broke it was most likely draining a hell of a lot of current and should have been noticeable when you charged the batteries.

Anyways as you said in the end its all electronics and it can fail, 5955s 8711s 8611s ive seen them all fail for one reason or the other

RE: FLy Eagle Jet Models
 

Mate I understand where you are coming from, I have heard alot of stories about hitec servoes and the trust is just not there anymore.

Maybe I just got a bad batch!

Anyway the 16 is all set for flying and hopefully no more dramas.

Goodluck to those that are about to maiden theres.

regards
Todd

RE: FLy Eagle Jet Models
 

Hi Rob,

I did not realize that they had changed the F16 springs. I checked my bird and it is flat on its mains. I will have to ask for new springs.

Regards,
Mike

RE: FLy Eagle Jet Models
 

Mike
Yes just give them a mail and they will send you out the new ones i have only changed the mains as the nose leg is fine. The old ones used to just sink down to full compression when i taxied it. Now they are great worth changing them.

Rob.

RE: FLy Eagle Jet Models
 

Are you guys having any tire problems or broken gear door hinges? I'm just now building my jet but I did hear of one gentleman that had problems. Could have been pilot error.

RE: FLy Eagle Jet Models
 

Hi Guys,
I am putting a Wren WM54 Mk3 in the F16, rear mounted, is anyone flying with this combination, as I realize it is close to the bottom limits of thrust required, if so how is it handling?
I am also looking at the CofG with the engine in the back and all the batteries as far upfront as possible, but still seems very tail heavy, are you adding extra weight up front to achieve the correct CG, full UAT and gear down.
My dry weight with full UAT is 9.2 Kg or 20.5 lbs.
As always any feedback much appreciated.

Rgds
Lee

RE: FLy Eagle Jet Models
 

Sorry for all the questions but I'm new to RC turbines. I was looking at Festo's last night and ran across 4mm and 6mm auto-shutoff couplers. What exactly do these couplers do and how are they used with our applications?

RE: FLy Eagle Jet Models
 

John,
I have my Rafale back together and ready to go with the supersport for extra take off thrust. I know that 130mm is the CG and 15mm seemed ok for the ailerons. Can you tell me what your final set up was for the Canards and elevator,
Regards
Paul

RE: FLy Eagle Jet Models
 

Lee,

My center mount FE F16 also came out tail heavy. I had to add approx 350 grams to get it to balance. So I just decided to run an extra ECU 3000 ma pack. So my ECU now has 6000 ma. May as well add useful weight rather than dead weight:D

Mav [8D]

RE: FLy Eagle Jet Models
 

Just had my FE f16 ADVANCED (Israel scheme) delivered two days ago, WOW well impressed to say the least only three issues, one broken cossmember under cockpit no big deal, canopy was damaged so will need another and the rear tailplane left side the green is a different shade to the rest of the plane, see if they can send me some paint, with new canopy.

So quick question to you guys, the three fuel tanks that are preinstalled, is it possible to remove them, their not glued in but seem impossible to get out, retracts and gear doors all preinstalled at factory.

lozza

RE: FLy Eagle Jet Models
 

I had maiden flight of my F-16 last Saturday. It is powered by JetCat P-80 and weighs about 9.5Kg dry. I have 2x Lipo 2200mha for receiver, 3200mha for ecu and emotec power box and a 500ml third fuel tank between canopy and engine hatch. Fuel tank setup is main tanks parallel and will get empted first and the third tank (500ml) empted the last before the UAT. I am using the third tank as a second hopper to avoid bubbles getting into the UAT. Normally I will land with this tank full. I set the CG to 145mm UAT full.

The flight was good, re trimming, it need a lot of elevator uptrim to keep levelled flight with undercarriage down. During the flight it felt nose heavy.

After 4 minutes flight there was the first landing attempt with takeoff flaps on about 7mm down. First landing attempt was too fast and had to overshoot and go around.

Second landing attempt was with landing flaps down 15mm. It slowed down a little but too fast landing. It landed OK with a few jumps on the ground and had to use breaks to stop it. It took about 150meters of runway for stand still.
In about 6 minutes flight that includes the overshoot at full power and turn around the fuel remaining was third tank 500ml full, main tanks around 500ml.

I believe that can do much better with a little throttle management, but also I am suspecting that it is still nose heavy.
I setup the CG to 145mm with only the UAT full. Since I am landing with the third tank full, I think this is adding up forward CG. I have to check if I can setup the CG to 140mm with UAT and the third tank full.

Regards
Vince

RE: FLy Eagle Jet Models
 

Be carefull with flap deployment.
Flaps in this type of aircraft tend to lift the tail giving the impresion of a nose heavy configuration.
You have to program a little "Up" elevator with flaps down.
I'll maiden mine, F-16 advanced version on this week.

Regards,
Juan.

RE: FLy Eagle Jet Models
 

Lozza I have the F16 still in the box and I had the same reservations with the fuel tanks but with a little tug they do come out no problem.

RE: FLy Eagle Jet Models
 

Cheers chap will give it a go

lozza

RE: FLy Eagle Jet Models
 

Lozza,

Just a word of caution,I am not sure if FEJ has changed the stopper material, but on mine and a few othere, the stopper disintegrated and fuel got all over the place. If it is a light color red, you may want to change that with the DUBRO version. You may want to test it by putiing it under compression in the tank and have it exposed to fuel.

Regards,
Mike

RE: FLy Eagle Jet Models
 

I replaced the stopper in my rafale and have also got replacements for my F16. I also had a friends make me some ali collars which I glued in the tanks with hysol after opening out the holes a bit this gives the bungs a wider purchase when you tighten up.

RE: FLy Eagle Jet Models
 

Thats why i wanted to get the tanks out, to pressure and fuel test the tanks and change the stoppers if needed, tested the door rams today, very slight leak from one of them, still not sure if to change them for something shell we say a bit better, will 1 inch rams do the job all round or do i need 3/4 inch for front door, also as i have the advanced is the tail fixed in by bolting or glueing really don't want to glue as want o have access to servo for future problems if needed.

Regards

lozza

P.S reading through here i see theirs some chap on here by the name of Bill who's doing a manual for the advanced F16 once done will this be on Flyeagles web site

RE: FLy Eagle Jet Models
 

Vince, My 16s c of g is at 140mm and balanced so as to get the nose to drop slightly, trimming was minimal to elevators and flaps are not used the flying when trimmed was beautiful and rock solid, do your c of g only with the uat tank full. Try that. also check your tyre pressures I presume you have the same ones as I have, and this may help with stopping.Try when on finals to have the throttle above idle and when you have the model lined up bring the throttle right back flair the model and land, remember these aircraft are sleek and cut through the air so speed should not be and issue.

someone asked if the tanks come out, yes they do with some gentle persuasion and new swear words they came out, the effort paid off as I had leaks so please check yours.

regards to all
Todd