Has any body assembled the Hanger 9 Edge 540? In typical Hanger 9 fashion it appears the Edge 540 will come out nose heavy if assembled according to the instructions. Has anyone put three servo's in the last tail section? That seems to be the only way to balance it with out a lot of lead. I was thinking of putting two elevator servo's, one on each side with short 4-40 rods and one in the bottom of the fuse with short cable to the rudder and tail wheel steering arm. (I'm not fond of using a tail wheel bracket that glue's to a split in the rudder post. I prefer to have a bolt on style under the fuse) I'm planning on using either a Super Tigre 3000 (1.8 CU.) or a Webra Bully, (2.1 CU. on alcohol), only 3 1/2-4 oz. difference in weight.

Also, it came with two wing spars, one attached to the wing package and one attached to the accessory package. Which one do I use?

Just read down a little or click
http://www.rcuniverse.com/showthread...threadid=25547
Great thread has been going on the 540..

Good thread but it is on Rocco's/Kevin's smaller Aeroworks version. They be local boys whom I have great respect for. I have the larger Hanger 9 Edge designed for a 1.80 4 stroker and need some one who has played with one to help me out here.

Thanks for the reference tho Ed....

Hi A10FLYR!

>>need some one who has played with one to help me out here.<<

Well... I've completely built four and partitially built two others... and have a couple of hundred flights on this particular model... so I might qualify.

It's actually alot easier to have them come out tail heavy than nose heavy. Putting two elevator servos in the tail usually means a battery pack up by the firewall.

I've flown the plane with the CG from 4" to 6". I'd recommend starting at 4" even though the manual says 4.5". I think most people will end up liking it best between 4 and 4.5 inches. 5" is probably as far back as anyone could possibly want it for 3D. Having said that I did fly mine for 100 flights at 6" back... but it was really too unstable. Ironically, I moved it up to 4.5" and stuffed it on the next flight.

Hey Joe,
Thanks for the comeback. On mine I hung it by the former infront of the spar, about 4¼" back, and did a layout. It balanced with three servo's on the stab so I was considering putting all three servo's in the rear but first wanted to hear what others were doing with theirs. What engine were you using? What size prop was it spinning? Any help on the spar situation?

Thanks,

My H9 edge, has a RCS140 gas engine on it. Servos mounted as per plans, except that I added another elevator servo. Flight battery is in front of the fromer directly below the front of the turtle deck. ignition battery is up front behind the firewall.
weight is 12-1/2 lbs. apc (w) prop17 x 8 -, 8300 rpm.

Balance point 4-1/2"

<My H9 edge, has a RCS140 gas engine on it. Servos mounted as per plans, except that I added another elevator servo. Flight battery is in front of the fromer directly below the front of the turtle deck. ignition battery is up front behind the firewall.
weight is 12-1/2 lbs. apc (w) prop17 x 8 -, 8300 rpm.>


I just don't believe it!!! ;>))

I just did a retest on mine. I tied a string to the former in front of the spar, (no fingers this time!). clamped the engine, (Super Tigre 3000), to the firewall which is ½" further back then they call for, with prop but no propnut or spinner. I then put three servo's on the stab...still didn't balance. I then put the battery, 1100 mil, on the stab and it was just a little nose down! Weight is about 10 ½ # without wheel pants, reciever, throttle or aileron servo's, glue, spinner, extensions.

And here is the balance!!...5¼"

Hi A10FLYR!

>>What engine were you using? What size prop was it spinning? Any help on the spar situation?<<

I've used Saito 1.80s and Moki 2.10s. From 16-8 to 20-10 props. Use the joiner that comes attached to the wing... not the one in the box.

Thank you Joe! any thoughts on the servo placement?

Hi A10FLYR!

Definitely put two elevator servos in the tail... like you're already planning.

I wouldn't put the rudder servo in the tail unless I needed to for CG... which in this case you don't. The main reason would be all the glow goo it would get all over it. I'd put it in the stock location.

A10FLYR:
Just what is it that you don't believe about what I posted.

A10FLYR:
Just what is it that you don't believe about what I posted.

Hey there....don't take offense now!;>) I'm not dissagreeing with you!! I"m just amazed you can get balanced with all that stuff up in front when mine is so nose heavy. With radio stuff put where H9 wants me to put it, it just doesn't make sense that yours balances without a lot of lead in the tail!!! Look at my pictures above with servo's and battery on the stab. Could mine be THAT much lighter in the tail?? I think I'm balancing it at the right place according to other people.

Whoops!! I just re-read the manual and it says; CG is from 4½" to 5¼" and I see that all of you are balancing at 4½" while I'm balancing at 5¼". I'm going to relocate the string at 4½" and see what it does.

And I always thought we were supposed to balance at the aft CG location for funflying!!

No offense, just busting.
Yes, 4-1/2 seems to be pretty nice, lay it on it's back and it just stays there.
I don't know how much your engine weighs, but this little gasser is very light. I added nothing to balance it.
I have the throttle servo just about where it calls for it, I just had to move it over a bit because I pulled the tank as far back as I could.
Along with the ignition battery, is the ignition(light) module both up front behind the firewall.

Now do you believe me????

No offense, just busting.

I don't know how much your engine weighs, but this little gasser is very light. I added nothing to balance it.

Now do you believe me????

Yup, I sure do...the light little gasser is why you had no problem with balance. The Tigre 3000 is a heavy engine in my opinion. I did a rebalance at 4¼" and decided that I will put two servo's in the tail for elevator. I was concerned about the goo getting into the rudder servo if I mounted it under the fuse so I will mount it in the recommended location. (Thanks Joe)
I will use a Webra Bully for power and still have to mount the throttle servo back with the rudder servo and put the battery pack somewhere behind the cockpit to get it to balance.
Reason for using the Bully is that with the 3000 I was only able to get unlimited vertical, slow climb!, using a 16-6/10 on a 9 pound stick. With 10½ pound bird I'll need the extra horsepower to hang on the prop. Don't know which size prop I'll need to use yet. I'll keep you informed!
Thanks Guys,

Hi Dean!

Kool! Let us know the all up weight before you put any fuel in her. And, some pictures of your setup when done would be cool, too. :-)

Here's what the elevator servo setup looks like so far. I have more detailed pic's if anybody needs 'em

I've had a few private e-mails asking me for more pic's of the servo install so here goes. Those pieces of wood are 1/8th" ply.

And another.

Hi Dean!

Looks great... light, clean and simple!

What servos did you use?

Great pics with the text layer!

Thanks!

[QUOTE]
Hi Dean!

<Looks great... light, clean and simple!

What servos did you use?>


Thanks Joe,

Well the servo's are a little overkill...135 oz. 9402's! They just happened to be laying around doing nothing so's I put's 'em to work. I think 148's would have been OK.

I too have mounted two servos in the tail. I have found that it works alot better this way. I run the saito 180 up front with a little nose weight to balance. I would like to know if anybody has had there edge pitch up when going to land. I have calculated the cg position on the wings and it is about 3/4-1" in front of what the manual states. Let me know what you guys think.

Pitch up on landing:

I happen to be reworking mine right now. At first I was happy with 4-1/12", because of the way it flew and I just figured the landing problem was my own fault, but I have flown it enough and tried various other gimmicks (more expo, reflex etc. etc.) to realise it is not just me.
I would have tried the new balance point this morning but as I was cleaning the plane I discovered, there were three aileron hinges broken. The hinges are the ones supplied with the kit and have not been abused nor did I ever have any flutter to cause this.
If you used the supplied hinges, PLEASE check them. If the hinge gaps had not been sealed, that aileron would have pulled off, don't ask me why I didn't notice anything before hand. I did however think I made kind of a sloppy turn to final, this could have been when they let go.

Thanks for the info on the hinges. I use 3M clear patching tape to seal the hinges (this tape is kind of thick an really strong, it is also see through) So it really acts as a cont. hinge. Has anybody else had this pitching problem. Let us know so that maybe we can find a diff. solution to it. I did calc. the cg using the standard cg formula and the 25-30% range. The range given in the manual is close to 33-40%
Happy flying.

I had a H9 Edge with a Fox 2.4 Gasser on the nose. I installed three servos in the tail. Two on the sides for elevator, and one on the bottom for rudder. I used pull pull on the rudder. Worked great. I used Hitec 645mg all the way around. Great servo. This was a great plane. I lost it after I ran it out of gas. Everything else survived so I got another one in a box. Will build the same. I will have her ready in the spring. Here it is with smoke on. Enjoy.