390 shipped to my house should have it in 2 weeks..

$380.00 delivered to the door for the YS 110 from Singapore hobbies. Really nice that's for sure.

It was here in 2 weeks. From when he received my money...

The 60 U-Can-Do it might be a little big for my car. Except for being bigger than the 46, what would be some differences??

I got the room .
Now I am waiting on the plane to come in....
Got the engine need the plane..

Got to knife edge spin my UCD. I start with a hammerhead to the right. When it falls halfway, I give full down elevator and full throttle, and correct with a little right rudder and left aileron. It does pretty good knife edge spin. I will see if I program flaperon, can I tighten them up.

Guys, I need some advise here. Is it safe to run in a new saito 100 on the UCD ? I am concern about airframe or firewall damage from excessive vibration. Anyone done it before ? Thx......

Thats what I did. I didn't have any problems at all. If I had a test stand I would've broke it in that way, but since I don't I ran it in on the plane. Works great.

Saito 100 is okay. I have it in my UCD. Vibration is not bad at all. The vibration shakes the plane most at 1/4 to 1/3 throttle, after that the amplitude is not bad at all. I guess UCD's resonant frequency is about 2000 ~ 2500 (divide the 1/4 throttle rpm by 2 for 4-strokes).

The only thing that came loose was the landing gear and the former in front of the wing.This you really have to add triangular stocks.

Now, if you are thinking about a Saito 180, then it's a different story.

one of those rubber engine mount systems in to limit vibration?

I use a Sullivan Dynamount on mine and it works great.I had to re-drill the mount to use the existing blind nuts ,but no big deal.
I had the firewall come loose on mine so I think it will probably help with that concern.I am using a YS 91 in mine .

Just got my UCD. What hardware should I replace. I know everyone says to use 4-40 rods. Should I use the Dubro heavy duty control horn system or is that over kill? Are the control horns good enough? Also should I scrap the CA hinges and use the dubro plastic pin hinges? Thanks

Hi seanychen, I am not concerned about the level of vibration after the engine has been broken in. I am concerned about the high "knocking" level of vibration during the break in. The arf firewall is glued on with hot glue ain't it ?

I've only broke in 30 or 40 engines but I've never experienced any high knocking vibration when breaking a new engine.
It is not hot glue!!! There are so many industrial adhesives available that are way superior to "hot glue" that no manufacturer would ever want to use it. Your engine shouldn't cause any more severe vibration the first tank than the 100th and if there were enough additional vibration to break the engine loose then the firewall would never have lasted in the first place.
basmntdweller

Check out posts here and elsewhere, you'll find hot glue is use in many GP arfs. They can't afford the waiting time for other types of glues. UCD's landing gear uses hot glue and there has been posts here on that but I'm not sure about the firewall, unless somebody who has had his torn off can confirm if it is hot glue or something else. I've inspected a wreckage of a gp arf (avistar) and they use the same type of glue throughout the wings and fuse and yes the firewall too - hot glue! Good to know that you've broken in on the plane without problems. That's all I need to know..........

Has anyone tried this engine on the UCD? , if not , what would be your oppinion on the match , would it be enough?

Balance your prop.

I agree

No. Not for 3D. Would do alright if you just wanted it for a normal flyer, but don't expect to hover or do other cool 3D things with a .72 2-stroke.

If using a aluminum spinner, be sure to balance that too! I wrecked a plane using a Trueturn that was out of balance. Couldn't figure out why I was shaking apart CA hinges each flight.

Thanks Coolmarlin , but being cost conscious , what 2s (if any ) would give me full 3d capability

OS 91 FX using 15x4W prop.

I'm about to mount my Saito 100 in my UCD and noticed there is no built-in right thrust. Has anyone noticed if any right thrust is needed and how much?

It's not much, but here's a video of my UCD powered by a ST 90 with MCP, APC 15x4w.. (10 meg so allow enough time to load)

http://www.eldonmo.com/video/ucando1.htm