FenderBean

actually not my f-16 only had 16mm

Hot Rod Todd

My Feedback: (1)

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.

Veritech

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.

Collinba

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.

Hot Rod Todd

My Feedback: (1)

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.

Hot Rod Todd

My Feedback: (1)

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.

Lil Hoss

My Feedback: (58)

Hey Guys,,,,
Is this thread still alive??
I just ordered FEJ F15.
Just wondering how the F15's are holding up

Thanks

Hoss

danisegal

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

rhklenke

My Feedback: (24)

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

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

rhklenke

My Feedback: (24)

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

danisegal

Yay you've made my night (I live in South Africa )

Thanks for the advise

Regards

Dani

danisegal

Hey all

Would it be ok to fly this jet using "y" leads on the control surfaces or do you recommend using a powerbox or match boxes, Trying to decide the best way to run using a 9 channel DSX9
Thank

Dani

Phantoman

My Feedback: (1)

Fender Bean & KC

I have an older (and I assume heavier) FEJ F-15 in the 9.5 scale.

You both list King Tech as turbines you fly. My question is would a KT K100G be strong enough to power my F-15 or should I go with a 140 size? I understand the K100G would be on the lighter side of power but for a first jet speed is not my main concern.

Any advise from you or anyone else would be greatly appreciated.

Lil Hoss

My Feedback: (58)

I'm hoping there still is guys out there to give advice...
I just received my new F-15 about a week ago and it is a think of beauty......
A few issues here and there but I am working them out.
I do have a couple questions if someone could help me with.
I fly off a nicely groomed grass field. I read all the post from page 1 and it was brought up a few times about spreading or shimming the main gear for a wider stance.
About how much shim or washers were put under the gear??
Another question..... I fly a JR 9503 and am VERY pleased with it. (No intentions of buying a bigger radio)
Will I get away with this radio on this model?? I would really like to have the canopy open thru the TX. The air brake doesn't really matter too much but if I can I would like to be able to use it.
On my other jets I like to have rudder and steering on seperate channels. If I need to save a channel and "Y" them,, Perhaps I will have too.
I never use matchbox's before because I had no need for them. Will matchboxes or a 9 channel tx allow me to do all the funtions?
Oh yea.....Forgot to mention. I really would like smoke too.
Thru all the post I never seen the location of a smoke tank. Any suggestions on that??
Thanks guys and I hope this building thread comes alive again.......

Hoss

KC36330

Sorry guys i've got very limited internet access these days so i've missed a lot of posts here on RCU....

Phantom, i fly my F-15 with a Titan SE, it flies with authority and i'm sure it would fly well on less thrust but i don't think i'd enjoy it very much with a 100 under the hood.

Hoss you'd be better served with a powerbox then the number of matchboxes you'd need (rudders/stabs/ailerons/flaps)

FenderBean

I would ho with the 140 the 100 would get it off the ground but like kc said would be more enjoyable with the 140

Lil Hoss

My Feedback: (58)

Yes KC,,,,
Besides Rudder, flaps, Ailerons and elevator will my 9503 be able to open the canopy, possible air brake and smoke????
I never used a matchbox before but this power box interest me. What does a "powerbox" do?

Thanks KC

Hoss

KC36330

1) Thrust
2) Ail
3) Elev
4) Rudd
5) Flaps
6) Retract
7) Break
8) Steer (speed break if you mix steering with rudders)
9) Smoke

No canopy

a powerbox is a power distribution system distributed by Duralite here in the states.

https://duraliteflightsystems.com/in...er-Box-systems

Phantoman

My Feedback: (1)

Fender & Kc

Thanks for feedback. I have KT-K140G on order thru Modellbau

Turbine got to US in about 5 days and has been hung up in customs for over a week per the EMS tracking !!!! Well not ready for it anyway.

dubd

Phantoman, I had a similar question to yours (P-80 vs P-120) when I had a YA F-15 and Shaun from yellow said both fly similar, but the vertical is better with the 120. With the P-80 and I'd assume this to be true with the 100, you will need more speed entering the vertical. A friend of mine has a Jet Legend F-15 with a 32lb thrust turbine and he flies it at 1/2 power. He is planning on putting his 32lb turbine in another plane and putting a 90n turbine in the F-15.

Edit - I just saw that you ordered a 140. You will like the combo.

Lil Hoss

My Feedback: (58)

Thanks again KC
Am I wrong mixing speed brake with full down flaps?
1/2 flaps on take off, full flaps w/ speed brake on landing.
And I always mix wheel brakes with gear. (down elevator for brake) I have a valve for that.
I'm thinking that should open a channel for canopy operation.
I hope I'm thinking this out right.

Thanks again KC

Hoss

KC36330

the situation will always arise where you do not want the speed break deployed with full flaps, it's just the nature of how things work.

Lil Hoss

My Feedback: (58)

Well it is finished........
Very happy with the finished model.
I had enough channels using a JR 9503. This includes opening canopy and dorsol brake on it's own channel.
I been flying Jetcats for years and was very happy. Thought I would try a New Kingtech 140-G this time.
My weight was around 26# dry.
Just waiting for the snow to get gone and it will be maidened

Hoss

FenderBean

Like that scheme let us know how your speed brake works, im wondering if mine will deploy during landing or if the mechanical advantage not be enough.