I bought RCU's UCD46. I can't wait to get it in the air. I may go ahead and install my 46fx just because I do not want to buy another engine right now. I did not get the manual. Is anyone able to scan it, or atleast tell me where the CG is supposed to be? Thank you![X(]

CG can be 5 or 6 inches behind the leading edge, measured near the fuse. No instability at all when set at 6 inches back.

I'd be curious to see how it flys with an actual 46! I bet the 12.25 X 3.75 APC prop will be the best prop for that combo.

The U Can Do flys just fine with a 46 engine. I have an Evolution 46 with a 12.25 X 3.75 prop on mine. In the hands of an experienced pilot I will do what ever you tell it to do. Go for it , you can allways over power later.
jef

why use a 46 engine when you can get a .61 or .75 for the same price?

The best bet for the 46 UCANDO is the OS 70 4 Stroke. Hands down.

As in best bet, I mean well rounded. The Saito 91 is overpowered. Not that overpower is not good to have, for this plane you just don't need to have it. The UCANDO's are made to do very slow, graceful aerobatics, the 70 will hold hover and pull straight out. The 91 will do the same, but if you ever get the urge to ring it out full throttle level flight, you will flutter your wings and rip em off with the Saito 91.

Ok, I'll put my hand down.

.... down the left side of the prop on my Saito 91. Brrrrmmmm, there she goes again!

What a sweet engine! Very quiet too, with that new muffler design. Oh look, able to pull out of a hover at any time.

Oh, and I forgot about the item PigMan is about to mention!

Let's not forget that the Saito 91 is also lighter than the OS 70, at least according to Tower's and Horizon's web sites

OS 70 - 580 grams
Saito 91 - 520 grams

so the Saito is 2.1 ozs lighter than the OS 70 and has a butt load more power but yet the OS 70 is the best engine? Hmmmmm.......

Hey everyone just wanted to let everyone know that greatplanes sent me a new wing in replacement for the one that broke in midflight yet popped back into position so I could land to save the fuse although when I was unwrapping the wing from the packaging I noticed the wing tip was broken so i thought no big I ll just go in and fix it so I go in and it appears to be an easy fix but when I looked at the first rib I could see through the lightening holes the first rib in was cracked but none of the other ones were as far as I could see or feel when I squeezed the rest. My question to you guys is what should I do? should I fix or complain and try to get another wing.

Also later that night I went to a club meeting and I won another u can do 46 for 5 dollars in squaresmust of been my lucky day although I really havent looked the new one over yet to see if its all in one piece

Thanks
Steve

Steve

Congrats on winning the new UCD 46 ... some guys have all the luck,

As for the damged wing you got from Great Planes...

By all means, send it back. If it were me (I tend to be the loudest gear) I would DEMAND a whole new plane. Even though your fuse and tail are not damaged as far as you know, the UCD is very lightweight and fragile. There could be damage there you are not aware of. What ever you do, don't tell the GP support rep you won another one for $5.

Rick

I just ordered a ucando 46 and was wondering if anyone has used a os surpass 52 engine. By all the posts it sounds like it will be way underpowered, but I have one on hand and am in no hurry to buy a new engine. Will this plane fly ok with the os 52? I don't need it to rocket out of a hover, but the ability to hover would be nice.

Maybe I can increase the power of the os 52 (porting, head shims, higher nitro content)

Any help will be apprecieted as I am new to this forum.

BK

Spend the extra money and get the 70 Surpass. You may be able to barely hover on the 52, but you won't be able to do it low enough to fall out of the hover. With OS 70 4 Stroke you can hover as low as you want and pull straight out of it.

Since you are basically buying a hover machine, power it enough to pull straight out.

Have any of you deepened the hinge slots on your UCD 46?
I am only getting 3/8" of hinge material per slot or 3/4" total contact area.
Will they hold at that depth?
Seems kinda shallow to me.

Thanks for the Help,
Pat

Well for one thing do not use the hinges that come with the plane. Use some good plastic pinned hinges. I used the DuBro pinned hinges for 40 size planes. I used a thin metal nail file, the kind with the pointed end, to expand the hinge spacing. Those fabric hinges are a pain in the ass to use. Especially if you need to replace one at the field. The plastic ones are MUCH easier to work with.

If you are going to use the stock hinges, then just use your hobby knife and deepen the hole until you get them to fit, it's ok if you make your cuts a little deeper. Make sure you dry fit your control surfaces before you commit them with CA.

Anyone running a YS 63 try putting the tank back closer to the cg?
Looks like you can cut the floor of the canopy area and move the tank back.
Dirk

Dirk-
yeah, I put the tank right over the front half of the wing. with the engine set up of the ys pressure system I wanted to have two tubes easily accessible, so I ran them on the outside of the fuse in the tank compartment using "fourmost bulkhead fittings." They work great! The only problem I had was the compartment above the wing is pretty small to fit a good sized tank in there. So it was either cut up into the cockpit or find a tank that fit. I found some tanks that are flexible. You can heat them up with a blow dryer and mold them to fit.
I got a 10 oz. tank to fit perfectly. and I still have access to the pressure line on the engine.
Trevor

I bought my U can do in june and got it in July. I put it togther and it seemed fine until i got to the control rods. When i got to that point, the control rods seemed to flex and the surfaces could move about 1/2 an inch. So I my dad bought some carbon fiber rods and some heavy duty servo arms and the plane seems fine. I've been flying this plane for about a month and this plane fly's great. I put a O.S. 91 4-stroke on mine and it seems to pull up just fine. I'm running a 15X6 prop and it loads down the engine but gives perfect response. The plane fly's great and i would recamend it to any intermediate flyer.

Hey airplane boy do you fly out of pratt Wayne? cause thats must be pretty close to you

yea, my dad and fly there almost every weekwend.

what planes do you fly. Im there about every sunday I generally have a spad but this week ill have either my magic or my ucd 46 #1 to remaiden it if I can get all the electronics backin it by then(or in other words if im not lazy all week). maby ill see you there?!

Steve

Ps Whats your name maby ive heard of you

How do I put into words. WOW! YIPEE! Yowzers!

I just took my UCD46 out for the first time and it was great. It is my first 3D plane and I love it. There was a pretty brisk quartering crosswind blowing, but I was determined. I do not have alot of money so this is a budget outfit right now. I have 6 standard Airtronics servos on it, programmed in with my RD6000, and an OS 46FX with a 12x6 prop. I was waiting for a 12 1/4x 3 3/4 prop, but it is not here yet. I had to add a bunch of weight to the front, and it came in at 6.75 pounds. It flew absolutely awesome. This doesn't say much since it is my first, but it was exhilarating. It was very stable and like my instructor said !QUOT!It will just about kiss the ground it lands so smooth.!QUOT! I played around with it on high rates and felt like I had accomplished something. I could not get it to knife-edge well, but I am still new to this and think that I will get it down soon. Thanks for all the support you guys have given here. Does anyone have any ideas of how to reduce my weight in the tail?

runover 1,
You might try using a pull pull rudder system, putting the rudder servo in the throttle servo tray and moving the throttle servo forward. I did this and mounted the throttle servo on it's side. with the servo arm pointing down, with a shim to give the arm clearance. Mine balanced perfect with a Saito .72 with this set up. The OS 46 fx weighs about the same as the Saito .72 so this should work for you.

high in da sky,

My dad and i fly a Ultra Stick And a Dazzler. The dazzler is blue. We'll also have the U can Do. See ya at the field.

Hi I just got my plane together went out side to start it up to tune it and it kept gravity feeding the engine so it kept flooding. What gives sould I just side mount it or mount it up and down to stop this any Ideas. Or what if I mount the enigine on top of the beams insteadd of below?

Steve

Yup, that flooding problem can be a real pain. When the fuel tank pokes through the middle of the engine mount (like it does on the UCD), the tank will be above the carb on an inverted installation.

Given the overall configuration of the UCD the engine is best mounted inverted.

Go back and take a look at post #333 in this thread which will provide you with one solution.

high in da sky,

My dad and i had the same problem. First, we had to Turn the engine mount right side up on the plane instead of upside down which it was suppose to be mounted. After that, we put some 1/2 in. carbon blocks under the engine and kept the engine inverted. I'll try to post some pics later or tomorrow. We tried to raise the engine up as high as we could and it is still a quarter in. below the middle of the tank. When i post some pictures, it will give you a better discription. The engine has run fine since.