RE: U-Can-Do 3D EP Anyone seen it yet?  
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RE: U-Can-Do 3D EP Anyone seen it yet? - 4/21/2005 4:17:55 PM   
SexyPizzaMan



Posts: 323
Joined: 6/16/2004
From: Basking Ridge, NJ, USA
Status: offline 		Wow, thanks for all the tips. Thats gonna help alot during the build.
Do I need to use foam safe ca glue??
Can i get a pic of the inside of your canopy so i know what you are talking about the tape??
Also what did u do to align the elivators, i never saw that technique being used. Why are there nails in it, and how do i use it to line it up.
I will be assembling mine on firday if all my things come so any other tips would be great.
Do i need to use balsa for the mounting stick? What did you use?
Lastly epoxy does NOT melt foam correct??
Servos are mounted on top of the wing?? Is this stock set up or did you decide to put your on the bottom.

Thanks for your help.
- Jeff

(in reply to Jerseymac)
       Post #: 76

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/21/2005 4:32:27 PM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		I think it flys pretty good once you figure out where you like your CG and all. I found that it needed 45% pos. expo on high rate elevator to tame it a bit. I also have my ailerons slaved to the elevator for flaperons. Really tightens up the loops and permits slower flight. I didn't do anything to re inforce the canopy other than sew the zipper ends. Its too late for that as I have pachted it back together too many times. The glue and quiltwork is just too lumpy to get tape to stick to. You may be able to see the repairs in the pics of the cooling hole. I also enlarged the hole where the motor wires go through the firewall to let in more air. The only thing that I would improve on if I were to knock one of these off is I would shorten the distance between the motor and the leading edge of the wing and I would increase the length of the tail moment. All in all, its a lot of fun to fly. I use thick CA and accelerator for repairs. Joe

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       Post #: 77

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/21/2005 5:22:48 PM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		Sorry, missed some of your questions. I used nails on the elevators just to pin them down. You could use weights or just tape them. The additional mounting stick is 3/8" square balsa stock. You have to trim the stock sticks length. I forget how much, but just measure the cowl or hold it on for reference. Just so the motor dosn't stick out too far and so the can does not rub on the stock tip end. I don't use the cowl. Epoxy is foam safe. Aileron servos are mounted to the bottom, stock. I found that since there is not a lot of fuse protruding down below the wing the servos will catch in the grass on landing. So it was either move them to the top or add wheels. Also, don't waist your time with the stock control horns. You can get nice laser cut hwde from 3D foamy.com or E-Flite makes good ones like on the Tribute. Or you can cut your own from old credit cards. Joe

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       Post #: 78

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/22/2005 5:05:26 AM   
Jerseymac


 

Posts: 145
Joined: 10/19/2004
From: Tinton Falls, NJ, USA
Status: offline 		Thanks again cumn thru.
I see you tried to make it look better by coloring the cockpit black.
I had the same thought but guess I won't bother as obviously, nothing is going to make this ugly duckling into a swan.
My son saw it on the table tonight and brought it into my den saying "There has to be a good reason why you bought such a awful looking plane!". I bent the fuselage almost in half and he said "OK, now I get it. Hope it flys better than it looks".

Can't believe some of the crappy control horns we get with these planes. I am going to use my 3DFoamy horns, if I can find them...
Really sorry to hear about the servo's catching on the bottom. I already set glued them in on the bottom and don't think I'll move them until I have to.

I am also going to have to read up on setting up flaperons. I am pretty sure I can do that with my Futaba 6EXA, but have to read up on the concept again. Isn't that supposed to give you lift in turns? I mean, doesn't the elevator go up when you move the ailerons?

This is really going to be interesting.

By the way, do you think my 400XT outrunner will handle the plane ok?
Here is what Hobby Lobby says about it:
"For lightweight 3D models to 9-1/2 oz. and other airplanes to 16 oz. Use 9x3.8 to 11x3.8 prop and 2-3 LiPo cells and an 8 amp controller. Good to 10 amps but draws only 3 amps in hovering a model of 8-1/2 oz."
Battery Pack 2-3 Lithium polymer cells
Current 10A Continious
KV 980 rpm per Volt
Prop (direct drive) 9” x 3.8” to 11” x 3.8”

They are on sale at Hobby Lobby for $29.95 instead of usual $49.95.
I got over 100watts out of one when I measured it on my Corsair (which is history).



(in reply to AcroJo)
       Post #: 79

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/22/2005 9:18:35 PM   
SexyPizzaMan



Posts: 323
Joined: 6/16/2004
From: Basking Ridge, NJ, USA
Status: offline 		I have a question about the radio setup. I have an eclipse 7 channel radio, and was wondering what you were talking about mixing the ailrons with the elivator. Is this mix on through the duration of the entire flight?? Im confused. Is this the best way to get slow flight??

ASSEMBLEY ON THE U - CAN - DO STARTS TONIGHT

(in reply to Jerseymac)
       Post #: 80

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/22/2005 9:46:05 PM   
Foamaholic



Posts: 869
Joined: 8/8/2004
From: Central Ohio, OH, USA
Status: offline 		If you use flaperons you can mix some up or down elevator so the more the flaps go down the more the eievator goes up or down. On my plane I need it to go down because the flaps cause the plane to pitch up.
Can do the same thing with spoilerons. Then I need up elevator mix.
Flaperons cause the plane to slow down and loop tighter and spoilerons cause it to speed up.

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       Post #: 81

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/22/2005 11:29:02 PM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		Flaperons or spoilerons are slaved off the elevator. Meaning the elevator is the primary contorl. Flaperons are when the elevator goes up the ailerons go down. Makes it loop tight and will give more lift and a lower stall speed. Spoilerons are when the elevator goes up, the ailerons go up, like when you want to do an elevator. The plane will keep its attitude, but ascend with foward motion at an angle. I think I got that right. With flaperons you can keep it on all while you fly as we do in the dome for tight, quick response and the ability to float slowly around. With both settings, it would be activated by a switch. Some, for spoilerons, like it on a spring loaded switch, as when it is activated, the plane is coming down. Joe

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       Post #: 82

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/23/2005 12:21:27 AM   
SexyPizzaMan



Posts: 323
Joined: 6/16/2004
From: Basking Ridge, NJ, USA
Status: offline 		Thanks, i guess should mix this into my airplane for better preformance correct?? Im building the airplane right now and im using a slightly larger outrunner then you ar, im using the highmaxx 2812 850 and i just spent 1 hour trying to figure it out, i dont have sticks of bals so im forced to use sheets to make a stick which is very time consuming. Well back to wpork, just the wings and elivator is attatched, im still workin on the motor issue.

- Jeff

(in reply to AcroJo)
       Post #: 83

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/23/2005 12:25:23 AM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		If your not going to use the cowl then you could just mount it on the stock stick. I raised mine for the cowl, which I took off. The change in thrust hight is a concern, but I don't know just how great it is. It may not matter. Joe

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RE: U-Can-Do 3D EP Anyone seen it yet? - 4/23/2005 1:52:44 AM   
SexyPizzaMan



Posts: 323
Joined: 6/16/2004
From: Basking Ridge, NJ, USA
Status: offline 		I just finished making the stick, and was about to cut the other one, i think ill just cut it since i already made the stick and masued it up, that way i can use the cannopy or not. Well the airplanes all hinged up now. Im still waiting for my servo extentions to come in. But the motor, esc will be installed and the rods and everything. I used ht glue on the tail peices, i hope it will hold, hot glue seems kinda weak but we will see.
Ill post pics soon on how everythings going.

O and one big mistake,
Make sure you dont leave the glue gun on too long, mine got hott and when i did the tail it melted half the foam.

- jeff

(in reply to AcroJo)
       Post #: 85

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/24/2005 2:16:16 AM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		Canopy is gone. I patched it so many times it felt like a scab. It sounded like I was opening up a bag of chips when accessing the battery. Cut it off down to the interior deck, from the nose to the rear former in the compartment. Cut out a 1/4 inc thick piece and folded it over the top with a cutout for the battery. While working on it I pulled out the stick, plugged the hole and re-installed the stick, lower, to eliminate the additional block I had on there for the out runner off set. The stick is hollow, about 2/3 of it, and the front third is solid. Check it out. Joe

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RE: U-Can-Do 3D EP Anyone seen it yet? - 4/24/2005 2:50:47 AM   
Jerseymac


 

Posts: 145
Joined: 10/19/2004
From: Tinton Falls, NJ, USA
Status: offline 		Are you going to give the plane a new name?
So many mods that it doesn't look like the original anymore.
Actually, looks better!
How do you keep the battery from falling out?

(in reply to AcroJo)
       Post #: 87

RE: U-Can-Do 3D EP Anyone seen it yet? - 4/24/2005 5:57:02 PM   
AcroJo



Posts: 2279
Joined: 1/25/2003
From: Clarks Summit, PA, USA
Status: offline 		Velcro! As far as a new name................how's BUHOF? Beat up hunk of foam. Joe

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RE: U-Can-Do 3D EP Anyone seen it yet? - 4/24/2005 6:04:47 PM   
SexyPizzaMan