Wondering what you guys have found for a CG on the H9 Edge 540. I have mine at 4 1/2" at fuse (recommended 4 1/2 -5 1/4) and seems to have some stall or wing fall out characteristics. For example, I can be doing a simple stall turn, while completing the turn and falling back down, the wings will wobble out of control. This is only the 3rd flight on it, but wondering if I should move the CG even further forward.

I fly mine with the cg at 4 1/2 and I think it flis fine. to me it is still a little on the nose heavy side and I will start moving it back a little at a time. I haven't weighed mine but I know its pretty light for its size. I am guessing about 12.5 pounds. You might try 4 inches, we all like things a little different. But I have heard of guys flying in the most reaward part of the cg. Did you balance your upside down? I did as I think you are supposed to. Happy flying

Check your wing incidence. A friend of mine's was way out of whack.

I'm the guy that is refered to by blade971.

The wing incidence of the ARF I got is +2 degrees. It flew at 5" CG like it was VERY tail heavy (unflyable) before I found the problem. If you raise the rear wing saddle up 3/8" it will bring you to zero incidence. I flew it at 4 1/2" CG before I found the problem and it was still "unflyable". This plane should be zero wing and zero stab incidence. I am now flying at 4 3/8CG (with the problem fixed) and it is an awesome plane. A bit heavy (with Brisson 3.2) but flaperons make landings OK. The power to weight is awesome and my only flying limitation is me. Just goes to show that ARF's aren't always THE answer.

How do you guys keep that plane together with these big engines???

Mine's gone now as the fuse broke in two during it's 14th or 15th flight with a MVVS 2.15 on it. It weighed 14.5 pounds. Flew very heavy but ok I guess. Never got to the point of doing any violent maneuvers with it, but during the slow pass straight and level I heard a big CRACK/SNAP and the front of the fuse from the leading edge of the wing forward left the plane like a sparrow missile for the ground. The plane suddenly under powered and very tail heavy, slowly darted into the ground tail feathers first and destroyed itself. The wing is unscathed though.

I'm going to order a new fuse and tail group and rebuild it, even thought I know I'll have to fix all the problems with the ARF. My incidence was out by two degrees also. Nothing fit, and most everything was warped. I'm an idiot for rebuilding it, but I've got two wings to use up!

I'm going to put a Saito 150 in this time.

Cheers!

Hi Dale,

That Genesis Cap looks great. I have the H9 Edge w/Saito 1.80 and it is a great combination. Mine weighed in at 11½ lbs. 1 servo driving a tiller to a bellcrank for a pull-pull setup for the elevator. To the other guys, my incidence was off by 2°, I think negative if memmory serves me, and the wing saddles were not level either.

BTW Dale, Slimline now has mufflers for the MVVS 1.6 gasser.

Thanks Scott! How's the 1/3 540 coming?

I hope the 150 will be enough for the arf. Don't want to put an more money in it, and I have the engine already.

I'll take a look at the Slimline mufflers. I did get one from BCM custom made for me. It looks nice. Cost big bucks though!

I'm done with the Genesis. Well... painting the wheel pants and running in the engine a bit, but that's all that's left. I'll send some pics if you want to see them.

Cheers!

Hi Dale,

I would love to see the pictures,

I hope to finish the 33% H9 Cap this weekend, it has been a slow go. I have been covered up with work and helping friends with their projects. I decided to change from the Nimh batteries to the Li batteries, saved me 3/4 of a lb. I have really been taking my time installing all of the fiber optic stuff. Hopefully it will all pay off.

Let me know how your new CAP flies.

The 150 is plenty for your edge, unless you want to hover right off the ground, then you may want a little more punch if you get into trouble.

Have a nice weekend.

I'm curious if the incidence problem that is being seen with the H9 Edge 540 is with the older version or with the more recently shipping version.

I'm very interested in getting one of these planes, and I really like the size and looks of the H9 version. However with several choices of 540 manufactures I'm not crazy about purchasing a plane that is known to have this type of problem.

Thanks,
Keith

Thanks for everyones suggestions. I have check in incidence and mine is -1 degree. I will fix and try fly again.

Keith - Mine is a newer kit just purchased in December. To the best of my knowledge, it has the new wing mods. Mine is powered with a Saito 180 and weighs in at 11.5 lbs. I do like this power option.

This may sound a bit ridiculous to you guys but what is this incidence that your speaking about and how do i go about checking and changing it.

I also purchased a H9 EDGE 540 and was going with the ZDZ 40 to power it being that I'm a nut for 3d aerobatics, but I'm not to knowledgeable about building these arfs and finding out what to do as far as strengthening them.

You have to take great care when fitting the tail section and joining the main wing of this plane together for it to come out right. I had to do a little sanding to get it right but the plane came out as straight as an arrow. My incidence is a perfect 0 degrees on the horizonal stabilizer and main wing and the main wing's leading edge is perfectly straight. Take your time and do your homework on this one. The results are worth it. On the CG issue I am presently flying this plane at 4" and the plane handles great. It does not matter if the cg was checked upside down or right side up on a midwing.