okay ,that is one way , but can I just clip the corners off elvators , that would allow me get more throw , but would it adversley affect the flight characteristics? Has any1 else tried this?

I have read where some were thinking of removing the wing tips. Has anyone tried this?

The pull-pull setup pic is in post #114

But I suppose the easiest way is just to mount your rudder horn in the lowest position possible. I think in this way, there's no real need for pull-pull as the same max elevator throw can be achieved.

Well, my U Can Do is completed. I just need some help setting up my 9C radio. I do not want to use any Y's. Can someone tell me what channels to plug everything into? Thanks

Rcpilot44, what receiver are you using ?

Hitec 8 Channel..

I built my UCD in January and have spent half the summer flying it. Although I'm not an accomplished 3D pilot, the UCD has it's strengths and weaknesses. It's an awesome slow flying aircraft and one of the best hovering planes I've ever seen or used. It's very forgiving and can land like a trainer if you want it to. Some of the things it doesn't seem to do well at are Knife Edge and Harriers. When I try to KE the plane tucks to it's belly and rotates. I haven't had much luck mixing it out. And when I get the plane in a harrier it rocks back and forth pretty violently. Now as I stated above I'm certainly no expert, but I've done better harriers with other planes. I've got a rearward CG at 6.25".I need to keep practicing, but as of now those are my main flying concerns.

As for the structural integrity mine has been really good so far (cross my fingers).

Hi cool, what engine are you using and how many flights so far ? No mods on the firewall and LG at all ?

Assuming you have the US manual, please see twin elevator servos on page 49 of the 9C manual.

I agree 100% with your comments, Torque roll is great as are slow fly inverted spins, blender, waterfall. Elevator has bad wing rock, and the Harrier needs loads of right rudder...a scary amount. Likewise I have better Knife edge and Harrier planes. Its a great plane to fly, but I expect like most people I am in search for the perfect model. Actually I don't think it exists, so in the meantime I guess we just make the best of each model.
I also have my CofG at 6.25" and am running a Saito 100. Still a great plane

Max travel on elevator and ailerons. I mix 80% spoilerons, and it settles into elevators and harriers, with little to no rock. Saito 100 with CG at 6.125.

I've seen videos at DODVF of UCD doing great harriers and rolling harriers

I built my UCD back in October. ST 90 w/MCP, 7 lbs, 2 oz, CG at 6 3/8". During the past 9 months it's logged way over a hundred flights....and I flew it three more times today. Within the first 20 flights, the CA hinges broke on the rudder, elevator, and ailerons. Great Planes pinned hinges cured that problem completely. When the UCD was fairly new, the firewall and landing gear mounting area were knocked out after a flameout during a hover. Gorilla Glue fixed them stronger than new with no problems since.

I'm no expert 3D pilot either, but I agree with coomarlin and nosram. The UCD is a fun 3D and hovering plane, but it's got some quirks in knife edge and harrier flight.

Descending in an Elevator works well with spoilerons mixed in. And spoilerons help with outside waterfalls too. But spoilerons don't seem to help much in harrier flight. And I haven't found much use for flapperons hardly at all.

After flying my UCD for the past 9 months, I still like it. And for the price, it probably can't be beat in it's size class.

I have one and they are all very tail heavy. when I sday very I mean VERY heavy. It takes about 5 to 6 oz. to level them out. Move the battery all the way forward under the tank and move the engine out as far as possible. Add 2 oz. lead weight to the spinner and 2 more on the firewall and you wilo have it. It flys great but the vertical stabizer have fallen off on a number of them in flight.

Hi wink, what engine are you using ?

Hmmmmm......the recommended CG is 4 7/8". I started out at 5.5", and thought it was too nose heavy. So I moved the ST 90 as far back on the mount as it would go. That put the CG about 6.0" back, but it still felt too nose heavy. So I replaced the mount with a smaller and lighter 60 size GP mount, with the engine mounted back as far as it would go. That gave me a 6 3/8" CG, which I'm satisfied with.

In fact, I never installed the cowl or the wheel pants because they would have added unwanted nose weight.

Wouldn't the first time be the clue to glue it back really, really good?

Compared to some ARFs I've had , the vertical stab mounting design is fairly robust. However, mine was severely cocked to one side dry-fitted. I had to tape and clamp real hard to the opposite side while the epoxy set to correct it.

I do agree that it builds a little tail heavy though. I have the servos, engine, tank and gears installed so far, and the CG is wayyyyy back there, probably 7~8" behind LE. Still, I'm sure I can shift the CG up to at least 6" once the cowl+prop+spinner+battery are added. From what you guys are saying, 6" should fly just fine.

There was a post here about a simple way to install fly wires to the tail. Pretty easy to do and well worth it.....

Here you go http://www.rcuniverse.com/showthread...67#post1089596]

Has anyone tried Robart point hinges on their UCD ? What size did you use 1/8" or 3/16" ? How much spacing between hinges ? Will appreciate some pics of installed hinges. Thx...........

test

Do you guys take-off at full throttle or partial throttle with the Saito 100 ? What are some of your experiences ?

on grass half on asphalt full and up in 2m.

Hi adrian, I imagine that on grass you'll need more throttle due to the ground resistance ? Seems like it's the opposite

It doesn't take much. I fly off of grass and usually just use half throttle unless I want to get crazy and launch the plane like a rocket