Okay, so it is tow on the stabilizer? It has to be so if the plane needs six servos...

there are two servo for the stabilisers (one each) located on the rear sides of the fuse, one for the rudder located inside the fuselage in the front, and one for each aileron. add the throttle servo, and that's six

Neo, I made a thread when building mine, with buiding pics.....

most of the answers about the questions you could have about this plane are here

http://www.rcuniverse.com/forum/tm.asp?m=724100

I received plenty of advises from rcu members

Salmonbug: verry much tanks!!!
There is a lot of info...

I have a question: will an os 46 fx be a good engine to the laser if I want it as a second airplane?

yes, it's a good choice.

my preference go to four stroke engines for 3D flying, but a 46fx will be just fine

IF you build it light. I'd say 5 lbs all-up-weight is about max. A mousse can muffler might help matters, too.

sorry for my bad english but i'm french
i have laser 3D with an irvine 53 and it's a good plane for 3D
and the torque roll is a really easy

@+
fabien

Will I be able to torque roll and hover?

And will standard s3003 servos be good for a start or should I take some that have higher torque?

Marcel

depending of your flying skills your laser 3D will torque roll and hover..........
let me explain you the secret of hovering: "buy for $ 500 fuel and train........."
s3003 should be ok for all flight controls except the rudder in my opinion

The Laser is a great flyer! I have flown my friend's Laser with an OS 46. it will do waterfalls, blenders, climbing inverted flat spins, rolling harriers, high alpha KE, harrriers, and torkrolls, this plane will do everything in the book. Easiest plane to hover and torkroll I have ever flown! Only thing is some have awful problems with their tails. Tenth flight, while he was flying straight and level at half throttle, his tail suddenly exploded, just shattered to pieces with no warning. Amazingly, he landed it with just ailerons and throttle! Nothing left of the tail and fuse badly damaged. All tail servos stripped. Some say poor quality wood. Others on RCU have had this problem before as stated in other forms.


3D-kid330


[8D]JR radios are the ONLY way to fly!

Yep. I have had it happen to me 2 times. I thought it was poor quality wood however when I rebuilt mine I used the highest quality wood i could get my hands on and changed the way it was built. I stick built it out of basswood strips and then sheeted with balsa. Two flights later the tail exploded again on the bottom of a loop (at 1/4 throttle). Now I am baffled. I have called and talked with the manufacturer and they played dumb about it. Even though its a great flying airplane (when it stays together) I dont think I will ever order another plane that has anything to do with them again b/c of their POOR customer service.

I have to concur, reinforce the tail.

mine didn't explode in flight (50 flightd on the plane) yet, but my stab suffered damages because a very small hit during transportation. It's definitly weak.

I agree that guys from laser models aren't very funy, the factory is very close to my home (belgium here) and I visited them to try to obtain a laser cut sheet "j" if my souvenir are correct to send replacement parts to a rcuniverse US friends.

they didn't gave it to me and said to order this damned stupid laser cut balsa sheet trough a hobby shop (I remember the sheet was containing 4 stupid ribs).
I was ready to pay for the sheet, but NO WAY to obtain it

I would like to add to my previous post that its a shame that they dont have better service and will listen to the customer. If they would fix this tail problem and offer the Laser3D in ARF form in the USA then it would sell very well. I have flown a lot of the 3D models and the Laser ranks up there with the best of them if you get one where the tail stays on (which I have one where it does). This is one of the lightest flying aircraft that I have ever laid my thumbs on.

Definitely a problem with their tails. Oh, to add to my previous post, he was flying around at idle when his counterbalence on the rudder ripped off taking most of the rudder with it.[X(]


3D-kid330



[8D]JR radios are the ONLY way to fly!

That soumds more like a reflection of your buildings skills...

Good Joke 3DFanatic

Especially since I have built over 20 balsa models from kits, built and sold (and are flying successfully) 23 SPAD3D's (my own version not one ripped off the net). And I have totaly scratch built 3 airplanes with no plans just a general idea of a few measurments. Did I mention that I picked up these skills from a guy who does some of the work from Cardens Team Flatout and is currently working on the new 40% from Lanier. I let him look at it and he came to the same conclusion that I did, something is bad wrong with the back end of these airplanes.

This happened to me and I built this thing right so it can happen to anyone.

!QUOT!This happened to me and I built this thing right so it can happen to anyone.!QUOT!





same thing happened to the first one I built , and I have built more planes than I can remember. IMHO
the problem is due to the size of the air balance on the elevators and how it sits on the ground
its possible while holding full up while taxing that the air balances catch the ground/grass and this is what weakens
them. and then while under load in the air -they snap off
the second one I built I added some triangle pieces to the balance structure and was very careful while taxing
and It has not done this again . the airframe has well over 200 flights on it all being of the hardcore 3d variety.


Frank

Good to hear yours turned out better the 2nd time around.

I have rebuilt mine again this time I didnt put such large air balances on it just to see if it made a difference. I dont know when I will get a chance to fly it b/c I'm busy scratch building another profile Yak (which flew better than the Laser3D IMO). All I have left to do is run another throttle linkage (b/c I changed engines during the time it was being rebuilt). I am gonna go with a Vmax .46. I have the saito .72 (which is the motor for it) but I put it on my other Laser3D

Here is a photo of my newly completed Laser.

It has a Saito .72 for power, and weighs 4 lb 13 oz dry.

I plan to break in the engine tomorrow morning, and may fly it this weekend.

The CG is at 170 mm.


Leonard

PS sorry the pic is bad.

170mm huh? Better then "Expert" huh?

I make no claims, especially to being better than "Expert", but without adding weight, that is where it came out.

I may well add a little nose-weight for thhe first flights, but I would like to remove it. One post earlier in this thread said the CG was 6 1/2 - 6 3/4 inches (160-171.5 mm), so I am in the neighborchood.

Leonard

I was just joking with you because the "Expert" "Zwaartepunt" (CG) is 165mm

CG range is a recommended 155 to 165 mm if I remember correctly.

I will check mine sunday. Usually I go just a shade farther back than expert b/c I like the tight waterfalls and super flat spins.