Halogen

I have recently purchased from Peakmodels the Extra 260. I can not complain, so this post is not a complaint at all. Quality is good and great value for money, but I am trying to fiqure out how the hell can two servos fit at tail in the space provided after removing the covering either for dual elevator or rudder/elevator setup ?

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I prefer to use two servos equal distance from the control horn so I can easily move both the servos towards the front a couple of inches where fuselage gets thick, but there is only covering !!!!! so that means surgery to my plane to fit them .

Is this possible that a plane was made with this fault ? or am I doing something wrong

anyone out there got pictures of their setup ?

opjose

Maybe you should be using lower profile servos with support blocks at the fuselage for each.

A small ply block where the screws go in would "lift" the servo a hair, and give you enough space to mount two mini or low profile servos.

Like this, but with the blocks on top, instead of under the screw as it shows in the picture.

Halogen

Yes thats what I thaught but it doesnt mention anything on manual that you need such servos. I think I will put one slightly lower thanthe other and see how it goes but I still think there is a mistake somewhere

theo63

halogen,hey i just recieved mine yesterday,i havent looked at it yet ,i will tonight,if so what servos are you going to get,what motor are you going to use ,i got the spe 40 but that might be a bit too much steve

nowinkk

I got a Extra 260 and faced the same problem too. Finally, I decided to use only one servo for the elevator. As for the rudder, I fixed it at the radio tray and used cables for pulling.

Halogen

I am going to use 2 x futaba s3010 servos on both elevators and a high torque Hitec for rudder using pull pull configuration, this can be tricky (pull pull) cause NOTHING is mentioned in manual and cables can come very close to elevator servos but you do have space for servo in middle of fuselage. So I will have to find a way of avoiding contact of cable with elevator servos.

I must point out that you need to do some reinforcement on rudder. I did not like it so reinforced it using 1/16 ply as shown in pictures.

I will be using a mvvs 26GT petrol with a tune pipe on it and a Xoar 18x6 prop.

I will keep you posted with any proplems i encounter

nowinkk

Do you mean 2 x futaba s3010 servos can sit back to back in the servo bays previded? and how much each s3010 cost? I am using only a futaba s3001 for the the elevator for normal flying at the moment.

Halogen

Nowink thats my main problem , infact thats why I started this post cause whatever you do, ie 2 servos for elevator or one for rudder and one for elevator , they dont fit back to back using the `cut-out` in the fuselage provided by the manufacturer, as illustrated in the pictures.

As regards to servos, I just happen to have s3010s and I dont think s3001s should be a problem for elevator halves, but do not use 3001s for aerolons ! You need a bit of more torque for these or at least metal gear servos.

Keep me posted on how you progress. I will be placing tank in middle and its a 10oz dubro tank.

Im doing mine slowly cause i have little time during the week cause of work so if you do any adjustments please let me know

cheers

nowinkk

Today is my 2nd day of flying my Extra 260 and everything turned out fine except that I lost one of the wheel pants which dropped in mid air due to vibration.

All my 5 servos are Futaba S3001, brand new. They serve the purpose as I dont fly 3D at the moment.

My first maiden last Sunday saw a totally loosen linkage on one of the ailerons and luckily the plane was landed safely. Most importantly, the advice from senior members to check for loosen parts immediately after the first maiden paid off. Had I not adhered to the advice and took off immediately after the refilling, the plane would have gone out of control and crashed. So, do check every bolts and nuts on your first landing as the vibration from the single cylinder gas engine can wreck havoc...

Halogen

You are very lucky ! I always use thread lock on all bolts expecially on a petrol engined plane but its always a must to check after first flight. When thread lock is not arround I use clear nail polish

By the way where did you put your two servos, the one for rudder and elevator ?

nowinkk

For elevator, I only use one servo which sits in the cut-out provided at the tail; as for rudder, I fix it at the receiver tray at the centre of the fuselage and use cables for pull-pull configuration.

Wow, nail polish also can be used for holding the threads, fantastic....I will give it a try, but is it cheaper?

Halogen

Finally got it done. This is my dual elevator setup.

Each servo is equi distant from elevator control horns, but the servos are not back to back cause if you do use the servo space provided each servo would be half way out, so I cant understand why there are two space for back-to-back. So I cut a servo slot so that one servo lies on top of the other.

In doing so you have to close up one of the original servo space provided and re-inforce otherwise the this end of the fuselage may snap ! I re-inforced it with peaces of carbon fibre stips.

Rudder is then pull pull. Note in pictures that I was lucky that cable just cleared out of elevator servo

nowinkk

They dont look symmetrical thought it is functional provided they are equally distanced and fitted at the similar angle, regardless of up or down. Well, as long as the two halves of the elevator move simultaneously at the same magnitude, why not? But, did you get two pcs of ball link for the elevator? In my case, I got only 1 pc.

isaacslaw

My Feedback: (4)

You, know, guys, I don't know if it would fit on this plane, but Central Hobbies (centralhobbies.com) has a dual elevator system (not the two pushrod system). It sits between a couple of ball bearings and allows one servo to work both elevators, but still lets each elevator half be adjusted separately. [link=http://www.centralhobbies.com/control_linkage/Bellcrnk.html]Elevator bell crank system[/link] You would have to mount the elevator servo inside where the rudder servo might go, but you could then mount the rudder servo in the tail, or just raise or lower one of the servos and have both inside -- good for those with lighter glow engines in the nose.

Halogen

I Got one linkage but i made one myself for the other half. They are both equal distance from control horn. They are hooked on separate channels on receiver so my futaba 9 controls the rest so that they are both 100% synchronised with each other.


The reason that I used 2 sevos and not one is that I do not like half an elevator conected to the other half by a peace of piano wire and the second most important reason is that one servo gives its power to one than to two halves, and hence I can afford to use not so powerful servos instead of one very expensive servo controlling two moving surfaces.


The elevator bell crank system is good system and would prefer this instead of connecting the two halves by piano wire

nowinkk

With the dual elevator servo set up, I wonder if you had removed the thick G.I. wire holding the elevator halves together so that they were free to move individually.

nowinkk

The elevator bell crank system looks good, but it's rather expensive.

daveopam

My Feedback: (9)

I have one of those systems. It came with this Acro40 ARF I won at a fly in. It works well and is easy to set up. It just wont let you use extreme throws like a two servo set up. If it were for a plane that was not going to 3D I would recommend it.

David

Halogen

Nice and neat setup as can be seen in the photo. Nice looking plane aswell. Nowink you have to remove the rod that holds the elevator halves together with a dual elevator setup otherwise you cause big big problems expecially during radio setup and you happen to reverse one of the servos !!!

panicman

Here is a pic. of my elevator bell crank system on my C.A. Extra 300l, sorry I don't have a better shot. I used a carbon fiber rod from the servo to the bell crank for a light and stiff setup.

Halogen

very very cool pilot there ! I wish I could find Buthead or Beavis pilot.

Belcrank setup is very neat .

nowinkk

I wonder if any of you guys flying this Peak Extra 260 model has done any additional bolting of the wings to the fuselage, or just leave the single existing stock plastic bolt to hold the each side of the wing? It seems to me the the original setup is not strong enough and the wings may give way any moment in speed flying.

RoysterDW

Did everyone using the dual elevators avoid the rudder cables?

Francis L M

Hi Guys

I already flown 2 Extra 260
and bouth models with the SPE26 and she flys like adream come true.

i have build it as per the kit .
and she has come out at 4Kilos raedy to fly,

at precent i am using a 17X8 for Running in.

Regarding the wing bots they do alright dont need to replace them.

the only thing i have changed on the model is i have not placed a pull pull
i have the servo directly on the tail,
1 for the elevator
1 for rudder

i hope this helps
i will post some pics

happy flying

nowinkk

Posting of your pics would be appreciated. Thanks.