I post this by request of a member who has some problems to post pics
I also post a copy of the mail he sended me explaining his concerns

Hello
I was wondering about something that I should know the answer to, but for some reason I just guessed at it and never thought about it and that is, When you put the UCAN's wings together, The control service on the wing you know the part that goes up and down and controls the plane (Alot of people dont know that so I wasnt trying to be a smart ass) but anyway I took some photos of my wings to put on the Forum but I cant figure out what I did wrong to put them on, I went to the Upload files, and then I put in my photos, but it waiting about 5 secounds a then gave me a white screen telling me that this page could not be loaded, I'm using the right format pictures and all,, But anyway my question is this I cant figure out how to find the center for both of the wings, like if I look at it from the side and I match both wings up perfectly level, that steal doesnt tell me if I'm a little high or low, or if the plane is going up or down, I want to know where I can set it at where the plane flys perfectly stright but like I said I cant tell, If yoiu dont mind Iv taking some photos of a way to use my level on both sides to see what would be the best to make it fly straight,, I hope I'm making since to you, So if you dont mind could you email me back and give me an adress so I could email you these photos to look at, or tell me how to put photos on, I'm wondering if the photo server is done..

Thanks

OK Wes. I'll admit I've watched Winnie the Pooh if you admit you used a New Kids on the block song as background music to a funfly routine. [sm=tongue.gif]
Just kidding.

Yeah I expect I'll bring the Sukhoi. Although I think I hate it. Still working on that damn cowl.

Randy, the best you can do is to line up the ailerons with the rib on the edge of the wings as a guide. Keeping the line from front of wing to TE of aileron. As a personal preference you can then adjust them up or down mechanically to find what works best. On this plane proper setup is neutral control surfaces, not needing positive or negative set up. If you activate flaperons on your radio it is easier to find out if your model needs positive or negative aileron attitude. Joe

Just an update on my broken Saito. I got home from work today and there was a UPS note on my door. It was my Saito. However since I wasn't home he will redeliver tomorrow. I sent that engine out last friday at 1:00pm. Can't believe 6 days later it arrives at my doorstep. Anyway, being the nosey type I am I figure I'll call Horizon and talk to a tech. I was dying to figure out what was wrong with the Saito. To my surprise he tells me that they had to replace the connecting rod. Definately a surprise to me. From what I've heard a broken connecting rod is almost always caused by a lean running engine. Anyway, to make a long story short, I am very surprised this happened because I definately do not run my engine lean. I run it ~300rpms below max which ends up being around 9650rpms. The engine has a nice smoke trail and it spits out it's fair share of oil out of the exhaust. He told me to treat the engine as new and I'll have to break it in again.

He also told me that the connecting rod is not normally something they repair for free under warranty but because the tech was impressed by the condition of the engine he fixed it for free. Yes he really said that.

I am using a cline regulator which had worked wonderfully. But I'm wondering if it could possibly cause a lean condition. I would expect not, but just a thought. Like I said, there is plenty of smoke from the engine so I'm pretty positive it wasn't lean.

I'll fire it up this weekend and see how it runs.

PS. While I had him on the line I asked him about castor. He said that Saito recommends using 20% oil. Either all Synthetic or an oil with a castor percentage of up to 20%.

Coo, good to hear it worked out so well, especially the free fix. I too, with a good smoke trail had it seemingly rich enough, but at that setting it just wouldn't give what I wanted. It ran great, but I always questioned the settings with the Cline regulator. Just didn't seem to get the results from the high end as when it was in the stock setup without the reg. Also, no matter what the setting, the oil residue expelled was always black, like I was cooking it. Well I finally broke down and mixed my elevator to slave off the rudder to stop the dive to the wheels when rudder is applied. It works, with my linkage ratio setup, which is about .75 to 1 it required 45% mix. If I can get back out today I can play some more to find the best percentage. I really didn't mind correcting with the sticks in the air, but was always apprehensive of useing rudder on landing, as it would abruptly force the nose in. Crosswinds are prevelant at the field this season for some reason. Good luck with breaking it in, should give old faithfull some new life. Joe

Hello guys , heres a happy U Can Do , can you see the smile ... Well this has a Supertiger .91 on a 15x4w on a 10 year old eng. runs great.

.....thought about doing something like that myself actually ......but i would probabally have knackered te cowl up or such like ...some teeth down the sides ...?..

I'm running an OS .91FX, upsidedown, on 30% heli fuel, and a 15X4 W APC prop. I removed the baffle in the muffler. Before you tell me I'm crazy, I live in Denver, and the air pressure is lower here, whereas the inside muffler pressure is about the same. Fliers often reduce muffler pressure somehow to compensate for this. There is another fellow here at the same field with the same plane. Both of us experienced balky idle, with stalls at unpredictable moments. He rotated his cylinder to the side, installed a Pitts style muffler,and his problems went away. I'm thinking of doing the same, although I don't want to. Any thoughts or experiences?

I would say to slightly more open the low speed needle valve

Hi guys,

Flew mine today and yesterday after changing the prop from 16x4w to 15x6 on the YS91FZ. On the whole much better hovers at just under half throttle! Still getting used to it CG is at 5 3/4" and throws are maxed about 60-70 degress on the tail surfaces.

I just need to get some stick time in but after the 5 flights i've had a do like it!

Andy

Where we can buy the Cline regulator ?
Perry pump is it better than cline regulator ?
I would like to use one of this with my saito 91 .

Cline & Associates (937) 426-4167 Good luck, Joe

Finally got out today and feel that I have the rudder/elevator mix nailed down. Knife edge was actually enjoyable for the first time. Even with all the area removed from the rudder its amazing how little input is required. On low rate rudder with full stick the plane will stand up. Now to try my hand at some high alpha KE. The new YS 110 has greatly increased my interest in the UCD. Incredible power. Most manuvers now only require a blip on the throttle. With a blast from the larger prop it can now flip over on its own axis. Big difference in the way it handles. Later, Joe

Joe,

I agree. The YS 1.10 really opens up the performance envelope for this airframe. Yes, other engines will fly the plane quite well. But for true 3D performance you need power without adding excessive wing loading by using too large of a powerplant. The YS gives you the power without a ton of weight. When I had the O.S. .91 w/ pump, I could hover (up high) but I had to "fly out". With the YS I regularly hover down on the deck, and can rocket out with ease!

Contempo, you got that right. Its a whole different plane with this engine. Now, in the second season of flying the UCD, it went from 'been there, done that' to wow! I'm liking it. Thanks again for the use of your logo, check it out. The color match is perfect. Joe

What do you think to use a perry pump on a saito 100 ?
Is it better than the cline regulator ? (i don't like to put 2 to 12 lbs pressure in fuel thank).
Or buy a ys110 ?

Joe
NICE LOGO
Did by yourself or buy somewhere?

You don't need a pump or a regulator with a saito 100. I thrash mine very very hard and it has never quit. Save your money.




Neo

Hi beaulac.....These supercharged and super.. YS's pressureise the fuel tank to around 9 psi i'm affraid.

HI guys. I have a Ucan with a Saito 91 in the nose. It is my first try at flying 3D. I am still working on the hovering which it does pretty good. The problem I'm having is with doing the Harrier. With the recommened 3D throws, It becomes almost uncontrolable. The wing rock is terrible. What am I doing wrong.I have been flying for 10 years but this is the first time I have tried this type of flying. HELP

cline reg helps the saito alot! plus when you use it you can move the fuel tank towards the cg to help flight performance!
with the cline i notice evenier fuel mixture threw out the throttle range and havnt stalled it since, the only problem with the cline that i noticed is that it wont richen up to the point of the engine sputtering! so its alittle tricky to make sure you have the right fuel mixture. but works great!

i like it!

I have to agree with srxripper, the Saito 100 is perfect for this bird as is. Greatly improved with the Cline regulator + the ability to mount the tank on the CG. Yet the ultimate combo is with the YS 110. At the cost of 6 extra oz. you can realize about 75% more power over the Saito. I have flown the UCD since they first hit the shelves and have had it set up with all three power options. The one improvement to the Saito was the Cline, the ultimate combo is, by far, the YS 110. Joe

Joe,

How much better is the YS110 over the YS91FZ? I have the 91 in my UCD but might be tempted to change?

Andy

Andy, I don't think that I'm qualified to answer that as this is my first YS engine. I would pose that question in the 'YS Club' thread, this forum. I'ts probably on page two. There are some with really great info and could supply you with a little more details. I believe the 110 has about 8% more power than the 91, but don't quote me on that, I could be wrong. Compared to the Saito 100, which I originally set up the UCD with, it walks all over it. Good luck, Joe

Ok Joe, thanks for the reply anyhow! [sm=thumbup.gif]