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-   -   U-Can-Do 3d 46? (https://www.rcuniverse.com/forum/3d-flying-82/817264-u-can-do-3d-46-a.html)

high in da sky 09-26-2003 06:35 PM

RE: U-Can-Do 3d 46?
 
aiplane boy I thought you said you fly at Pratt Wayne woods?? ow well what ever.

I too love doing low full throttle passes but this one time I decided to do a few inverted and the tail touched and I got spooked and pulled up(oops!!) well fixed that sucker up and flew it the next week only to crash again due to a loss of reciever crystal. after that I got into 3d and kinda forgot how to fly super fast and have had much more fun flying 3d. if you are interested in any older 3d planes to keep you hoverin till you fix the ucd give me a pm im sure I got something that will suit your tastes

Ducted Fan Dan 09-29-2003 10:30 AM

RE: U-Can-Do 3d 46?
 
I noticed a little while ago that dylwad put his own scheme on his UCANDO. Has anyone else done this? If so, let's get some pics up! I really liked the see through monokote giving a great look at the skeleton. I'm in the process of recovering mine so I'll post some pics when I'm done.

rcs36 09-29-2003 11:38 PM

RE: U-Can-Do 3d 46?
 
Hey all,
Try routing the fuel line out of the center hole in the firewall, up over the engine mount, then down to the carb. As long as the fuel line is higher than the center of the tank, it will not gravity feed. Refuel valve location is moot.
Worked for me!
Richard

Ducted Fan Dan 09-30-2003 02:28 PM

RE: U-Can-Do 3d 46?
 
I'm looking to trade my UCANDO .46 for a Goldberg Extreme 330 or a Morris the Knife, any takers?

STLPilot 09-30-2003 02:33 PM

RE: U-Can-Do 3d 46?
 

I'm looking to trade my UCANDO .46 for a Goldberg Extreme 330 or a Morris the Knife, any takers?
Too nimble for ya huh? Me too ... these UCANDO's are basically 3D trainers. I'm looking to trade mine too. I would prefer a Sledge ...

Ducted Fan Dan 09-30-2003 02:42 PM

RE: U-Can-Do 3d 46?
 
I really need something I can beat up more! and that is a little lighter.

STLPilot 09-30-2003 03:02 PM

RE: U-Can-Do 3d 46?
 
Lighter then a UCANDO? Inch for inch it doesn't get any lighter.

Ducted Fan Dan 09-30-2003 03:05 PM

RE: U-Can-Do 3d 46?
 
That's true, the wing loading is hard to beat, but I believe that a profile has more durability. If you crash a UCANDO on the deck, you will for sure be putting the gear in again, and hopefully it won't break in half.

STLPilot 09-30-2003 03:07 PM

RE: U-Can-Do 3d 46?
 
I've crashed 5 UCANDO's this year. Only 1 was not fixable.

joebob 10-03-2003 06:21 AM

RE: U-Can-Do 3d 46?
 
I just got my kit last night and was looking through it all and found that the wheels are way too big to fit in the wheel pants. What size wheels are you guys getting in the kits? These look to be at least 3" wheels. If I hold them up to the pants and line up the axle holes, they stick up above the top of the pant by at least 1/8".

Ducted Fan Dan 10-03-2003 07:50 AM

RE: U-Can-Do 3d 46?
 
YIKES! Sounds like they sent you the wrong wheels, are they rubber or foam?

STLPilot 10-03-2003 07:56 AM

RE: U-Can-Do 3d 46?
 
Advice for anyone ... even the wheel guy. Re-enforce the landing gear!!!!! Especially if you are using wheel pants and grass. They will pop off!

I also fiberglassed the backplate that holds the wing dowel on also.

You NEED to do this! I am on #3 46 UCANDO and I lost my landing gear on everyone.

Ducted Fan Dan 10-03-2003 09:00 AM

RE: U-Can-Do 3d 46?
 
there was a post a while back about using nylon bolts for the landing gear. That way, it would shear the bolts off and not rip out the block holding the gear in, then just keep a stock of ny-bolts and replace as neccessary. Pretty good idea.

joebob 10-03-2003 02:30 PM

RE: U-Can-Do 3d 46?
 
Just e-mailed GP about it and they're going to get me a new set of wheels. The e-mail they sent back said the wheels should be 1"???? That seems TOO small. I was figuring around 2"- 2 1/4" or so.

Anyone here flying one of these with a YS .63? I'm trying to decide onm an engine. I want something a tad mre powerful than the OS mentioned in the manual, but I don't know if I want to go all the way up to the Saito 91. Just seems too big. I'd be worried about vibration. I know the weight wouldn't be a problem, but how does the 91 fit in the cowl? Does anyone have pics of their installation?

Heads_Up 10-03-2003 02:57 PM

RE: U-Can-Do 3d 46?
 
One inch wheels????

The 46 UCD should come with 2 1/4 inch foam wheels.

Better email GP back and correct their mistake.

Rick

Ducted Fan Dan 10-03-2003 03:31 PM

RE: U-Can-Do 3d 46?
 
Saito .72, hovers at 3/4 with more than enough power to pull out.

Bad Tooth 10-03-2003 03:50 PM

RE: U-Can-Do 3d 46?
 
running the ys .63 in mine and I love it! although I haven't had any time lately to fly because of school, but when I do it has all sorts of power.

STLPilot 10-03-2003 04:14 PM

RE: U-Can-Do 3d 46?
 

ORIGINAL: dynodan

there was a post a while back about using nylon bolts for the landing gear. That way, it would shear the bolts off and not rip out the block holding the gear in, then just keep a stock of ny-bolts and replace as neccessary. Pretty good idea.
I am going to have to disagree with you for 2 reasons for this method. One; they should not break off as easy as they do. Since this plane is used for practicing Harrier landings, nylon bolts will not do the job and you need to be able to come down hard on them sometimes while practicing. Two; if you are going to use nylon bolts, be well prepared to keep plenty of monokote on hand. If the landing gear comes off, especially as easy as it would with nylon bolts, you are going to tear your wings on the bottom and damage your elevator almost every time, as I speak from experience. The landing gear will fold right under the very fragile wings. The damage will be more so if you have wheel pants on.

Lets just say now that I have fiberglassed & epoxy'd the landing gear and the wall that holds the single wing bolt, it will be the last thing to break on this plane. It needs to be done. If anyone wants to see a pic of how I did it let me know.

xender 10-03-2003 04:31 PM

RE: U-Can-Do 3d 46?
 

Hi guy's,

I just bought a saito 72 to my UCD 46 and I am not sure which fuel to use,this is

my first 4 stroke engine.

according to the manual I need 10% to 15% nitro & 20% oil.

can I use less percentage of oil saying 12% oil (most of it

synthetic) and 15% nitro?!

which fuel is more recommended: wildcat 10% nitro & 18% oil OR
byron 15% nitro & 16% oil(synthetic & Castor)

STLPilot 10-03-2003 04:35 PM

RE: U-Can-Do 3d 46?
 
Most people that I know who fly with Saitos including myself use 20/20. All synthetic or castor/synthetic mix. Don't go less on oil. Stay above 15%!!!

If you find an all synthetic 16%-18% oil you can add 1-2 ounces of castor to get to 20%. Either way you should keep a 1/2 gallon bottle of castor oil on hand. It's good to have.

15-20% Nitro is good for any Saito. I don't think I would run 10%. I also know several people that run 30% heli ... but I think that is just a waste of money for this plane. It doesn't take that much power. Maybe if you were flying a prop jet or something that you wanted to kick the RPM as high as possible.

Heads_Up 10-05-2003 10:43 AM

RE: U-Can-Do 3d 46?
 
Maiden flight was almost a disaster...

Maiden flew my UCD 46 yesterday. Plane balanced out perfectly to 5.25 inches off leading edge. With the OS 50 SX, rollout and liftoff were easily achieved at just above half throttle. Pulled to 20 degree up line and banked shallow left at about 50 feet. Noticed the plane needed a touch of down trim. At about 100 feet after applying 4 clicks down trim, the plane shot straight up in the air. I chopped the throttle to a low idle and it was instantly apparent what was wrong. The entire horizontal stab was cocked over about 30 – 45 degrees to the right.

I floated the plane in and greased an emergency landing on our asphalt runway. We began inspecting the damage and found the stab was still in one solid piece. Elevators were still attached and both pushrods were fine. However, the entire balsa support below the stab in the fuse was crushed..

I have not cut away any covering for an inspection until I hear from Great Planes.

Has anyone else had the horizontal stab support in the fuse do this? This was its maiden flight. Heaven forbid I had been in the middle of a snap roll, flat spin, harrier, waterfall … whatever.

Any comments are welcome.

Rick

Capt_Kc 10-05-2003 01:55 PM

RE: U-Can-Do 3d 46?
 
1 Attachment(s)

The landing gear will fold right under the very fragile wings


Thats funny. I'm the guy that put nylon bolts in the landing gear. My plane may look like crap, but I'm still flying with an intact wing and stab. I do not use the wheel pants though. Ever since I placed the nylong bolts in, I have ripped my landing gear out about 3 times now and haven't damaged anything (except the firewall the other day). I placed a saito 91 on front the other day. On the second flight after the maiden one, the motor died at take off. Was about 10 feet off the ground going into strong head wind. The plane just acutally stopped in mid air after the motor died. It came down and I almost had the plane pulled out but it hit kinda hard on the gear. The gear went out perfectly, but the big saito heads drug the ground and pulled the firewall out. Since then, I have remounted the motor right side up and flew all day yesterday...... without no problems!

STLPilot 10-05-2003 02:05 PM

RE: U-Can-Do 3d 46?
 

ORIGINAL: Capt_Kc
It came down and I almost had the plane pulled out but it hit kinda hard on the gear. The gear went out perfectly, but the big saito heads drug the ground and pulled the firewall out. Since then, I have remounted the motor right side up and flew all day yesterday...... without no problems!
Well ... Try the nylon bolts with wheel pants and see what happens. Then get back to me. I still believe in re-enforcing the situation rather then taking the easy way out.

Heads_Up 10-05-2003 05:32 PM

RE: U-Can-Do 3d 46?
 
Well...

Great Planes wants to replace my UCD 46 due to its vert stab failure. Thing that worries me is if I am flying the replacement plane and something fails on it. Oh well ....


Let me know what you guys think.

Rick

STLPilot 10-05-2003 07:11 PM

RE: U-Can-Do 3d 46?
 
Well there have been plenty of wing failures on this thread. I had GP replace my entire plane and so did others. I heard nothing of a V stab failure. What happened?


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