Steve, on the cowl thing, I maidened this one with the cowl off. I never had it off with the other UCDs I've had. Pain in the butt when making adjustments. Heres the Q. Do you feel that the ramp under the fuse makes it pitch up on the nose. I couldn't figure it out at first, but that is the conclusion I came up with. When flying level it pitched up like it was way tail heavy and when inverted it responded like it was severely nose heavy. Seemed to me that the ramp acted like an airfoil.

Also the cowl on this one is heavier than past ones. 3.2 oz. so, Andy you better compensate for that or you will be re-balancing when you put it on later. Joe

Are you gents saying I should start off on the stock cg of 4 and whatever it is?!

After all I read in here I thought 5 1/2 - 6" was best! But I take your point and I will fly it as per the instructions. I do fly my Hype 3d with the CG waaaaayyyy back so I'm sure after the maiden I'll move the CG back a bit. Good point about the cowl tho, the YS is broken in but tightening bolts and adjusting is nigh on impossible with it on. Cheers!

Andy

Andy, did you maiden the Hype with the CG way back? Not knowing who we talk to here and their skill levels, well you know. Since you've been there all ready, then you have a good idea on what to expect. The UCD is sweet, but like any other 3D model it could get real ugly real fast. Good luck, Joe

Andy I do not know how the plane you flew landed. All I can say how this one lands when it's tail heavy. You need to feed lots of down to keep it level when throttling back .When flying it moved back makes hovering almost effortlessly . It was a Little hairy for my landings skills. So I moved my batteries from the middle fuse where I had a hatch cut in to behind the fuel tank. As I get better I am sure It will make it's way back.

Gents...
I've been over on the other UCD thread a bit, but was steered this way for a little info regarding the possibility, effectivenes, or practabillity of mixing throttle/rudder to help with the right eng thrust or fin offset issiues.[:-]... never delt with this before, so at some point in the future any info you have may be of great help...thanks ....i know some data may be back in the thread somewhere but this is getting to be a big,long thread....may be quicker this way regards ,Dave.

autoguns, cumn thru, lord lucan... anyone.. can anyone harrier this thing. If so.. how did you do it. I am having problems. spoilerons mixed with elevator.. spoileronson dial/switch.. other?

did you get it to run right.....JW

Yeah.. I think it is. I get a pretty low speed idle now and pretty dang smooth. I think I am trying to set the idle to low for the cement runway and apc 16x6 (to keep it from moving) and it goes out. I am thinking about getting one of these too:
http://www2.towerhobbies.com/cgi-bin...&I=LXDZ82&P=ML
To keep it from going out at low idle.

The 16x4w just has too high of rpm for the ys 1.10 it seems. Thinking about buying the apc 17x4w or a zinger 17x5.

Great glad to here that ....If you want to put a powered glow igniter look up lord lucan on the arf forum he has one that is way cool...it looks just like a spark plug cap.....JW

Steve, cumn thru

When I first flew the Hype the CG was slightly further back than recommended (about 5mm) and I took it back gradually. Now I need to feed in down ele to get it to land, and I appreciate you can't tell what skill level people on here have.

So I agree with you guys 100%, I will start with the CG as per the instructions. Each plane has its little foibles and I'd hate to crash my new UCD just cos I though that I'm good enough straight to go to a 6" CG! How embarrasing would that be?! I just got a CG CG machine so should be no mistakes!

I'll be starting off with an APC 15x6, but I've also ordered a 16x4w for the YS91FZ. Looking forward to it..........

I find the dial a little intimidating. If your looking to land in a harrier I want it off on touch down and with a blip of the throttle at the end to keep it from slaming dosn't leave much response time to fumble with a dial. My trainer swithch is spring loaded, so thats cool. 3D rates on elv. with about 1/2" up ail. mixed in and your good to go.

I got two Zinger 16/5 still in bag if needed. Joe

The UCD is noted for not being able to harrier well, if at all for most of it's owners. I have read about a few guys trying things like cutting off the wing tips and increasing the rudder area, seems to help a bit but doesn't really cure the problem from what I understand. I just accept that this plane will not do that maneuver and stick with the one's it does do well.

I've never been able to harrier mine very well at all. Of course I'm no 3D expert, but from my experience it tends to rock quite a bit. I use spoilers also.

I trimmed the wing down a little yesterday. I took the last 3-4 inches of the end of the wing to see how it would fly/ well actullay taking the tapered part off was faster than repairing the damage I did to them when loading them in the truck the other day. But anyway, I had heard that some guys had done this before and that it seemed to knife edge better. Well, it does!! In fact it does alot of things better.I was able to harrier the first time without fighting the wings rocking all over the place. Landings are still slow motion...no bad tendancies to note. Has anybody else done this?

Brett_ty, any pictures you could show us?

Got ol' #4 out tonight for its second run since the maiden last week. The weather was almost bareable, a little gusty for this kite. This time was with the cowl on and the nose high attitude is gone with just a whisper of down elv. when inverted. I never thought it would effect it to that extreme, but it has got to be the ramp undeneath. Also I got a good taste of the 16/4 prop and determined that it is just too much prop for the Saito 100. Still not getting the Rs. 8700 static and spool up is slow. Its a lot of prop and a ridiculously steep approach is needed or you have to fly it in with throttle. At idle its like stepping on the brakes. My 15/4 arrived today and will get it balanced for the next session. After a few uplines it seems to need a little down thrust but will continue to check. Its good to be back with the UCD. Joe

thanks 4 the update

No, thank you. I have been following the excellent report that you have been providing on the WildHare and I must say, you have not left anything out. The pictures are great and the attention to detail is all I could hope for. I knew you were the man when I saw some of your other projects. Thanks again. Joe

OK, had a great session yesterday with the new 15/4. Slows down a bit more than the 15/6 but no where near the way the 16/4 did. Good pullout, quicker spool up with higher RPMs. No tach, so no data yet. I left the right thrust at 3 degrees until I saw how it responded to the 15/4 and turns out that it needs more right thrust. So at this point do I add more thrust angle or mix it out with rudder to throttle? Pro's/con's? THanks, Joe

CREST #2 has had a couple of test flights this week.

The new rudder design is working quite well. My first UCD would do nice inverted flat spins but it was sometimes difficult to initiate the spin. With the new rudder it is effortless. Very flat, with good rotational speed (very graceful). I think upright flat spins may be possible (I haven't attempted it yet). Knife edge performance is greatly improved. The plane still wants to pull toward the gear, but not nearly as bad as #1. With the application of of some "up" elevator I was able to do a knife edge pass with no ailron input! Without elevator , it does a great knife edge circle! Power of the YS 1.10 is awesome! I really enjoyed flying #1 w/ OS .91 but #2 w/ the YS is much, much better. With the 1.10 vertical is awesome. You have unbelievable pull out authority. It's like flying a huge foamie airplane!

Joe have you tried a 14''-8 Wide blade like a Grupner or a Master air screw K series? on your Saito 100 you may like it as well .

Steve, after all the air miles on the 15/6 and its lacklustre results on hovering, I wanted a little more bite. I went too far with the 16/4 at first, not enough engine, but it was available and didn't have to order it. The 15/4 seems good. Slows down nice, but not too much like the 16/4. Lots of get up and go with this one. I'll be putting some time on this one, I like it so far. You never got back to me on how you felt the plane handled without the cowl on. Joe

Joe I'm surprised you didn't have any luck with the 15x6. Mine hovers easily with both APC and Zinger Pro props. PLenty of power to pull out. I have a 16x4w but haven't tried it. I've heard a lot of negative stuff about the spoolup time.

I am sorry Joe On the cowl. The senses at are Field is Leave it off. I never had it on from the start. With getting used to a new four stroke I wanted to be sure with playing with it I was getting all I could get performance wise. My Friend give me a new 15-6 APC last week I may have to give it a try. I wish I sealed the monokoat in front of landing gear to fuse. I had a rough cross wind almost stack it up on the flight line fence last week. Upon landing sideways to avoid hitting it I pulled the landing gear off. I noticed it was a Little fuel soaked. Re glued it and covered the slot up to the motor mount.

Coo, I ran the 15/6 since late 2002 and just found that it was at the top of the throttle rang in a hover. With the 15/4 it is now just below 3/4 throttle leaving that last quarter for pull put.

Steve, on the maiden of this one I thought that I would leave it off untill I got the thrust issue dialed in and any carb adjustments. What I found was that It had a very nose high attitude and when inverted it was if it was severly nose heavy. It stopped with the cowl on. I felt that the ramp under the front of the fuse responded as an air foil pushing on the nose from below. Joe