*U-CAN-DO .46 Tail Heavy*  
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*U-CAN-DO .46 Tail Heavy* - 9/20/2004 3:59:30 PM   
Zippi



Posts: 3223
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline 		It's balanced at the 6" mark. I'd like to get it closer to 5 1/4 or 5 1/2 mark. Has anyone flown one with the C/G back that far??? Any ideas on how to add more weight to the nose? I already have the battery pack under the fuel tank and the reciever as far forward as I can get it. I'd rather not think about moving the rudder servo closer to the front.
       Post #: 1

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 4:36:39 PM   
flycatch


 

Posts: 347
Joined: 7/24/2002
From: Barstow, CA, USA
Status: offline 		What is the chord length of the wing? I'll calculate the CG for you if this is a constant chord wing.

(in reply to Zippi)
       Post #: 2

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 4:46:42 PM   
Zippi



Posts: 3223
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline 		The wing itself is a constant chord at 12" but with the aileron it's 17" at the widest and 16" at the smallest. The C/G has been revised on this plane anywhere from 4" to 6".

(in reply to flycatch)
       Post #: 3

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 4:55:26 PM   
flycatch


 

Posts: 347
Joined: 7/24/2002
From: Barstow, CA, USA
Status: offline 		You need to find the MAC and perform the math from there to determine what percentage you want the CG to be. I will assume that setting the CG at 6" will probally be at 33%-36%. Great settings for 3D flying. My Banchee 3D is set at 34%.

(in reply to Zippi)
       Post #: 4

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 5:10:42 PM   
ooooo



Posts: 440
Joined: 9/22/2003
From: FishBlahhhhhhhh, HEARD ISLAND
Status: offline 		Just bolt on a Saito FA - 100 up front and you'll have no probs man...

(in reply to flycatch)
       Post #: 5

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 5:40:13 PM   
Matt52x


 

Posts: 162
Joined: 7/26/2004
From: crown point, IN, USA
Status: offline 		I don't know how you guys get your cg back so far with out adding weight. I have an O.S. 91 (although you guys could have 70's in them)surpass in it. I had to take the covering off and but the battery back by the servos and everything else is as far back as I can get them under the wing. I also have about 1lb. of weight in the back. I don't know where my cg is currently but im guessing at about 4.5in. back.

Any suggestions?

(in reply to ooooo)
       Post #: 6

RE: *U-CAN-DO .46 Tail Heavy* - 9/20/2004 5:49:52 PM   
Zippi



Posts: 3223
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline 		I am running a Super Tigre G51 2Stroke in mine and I have the engine almost to the end of the mount and it weighs 18.4 oz. I have the battery pack under the fuel tank and I still can't get enough weight up front. I did add flying wires and some extra bracing on the stab. but it wasn't that much added. What do you think with the C/G at 6", think it will be to tail heavy???

(in reply to Matt52x)
       Post #: 7

RE: *U-CAN-DO .46 Tail Heavy* - 9/21/2004 1:50:03 AM   
Scott Dilley



Posts: 315
Joined: 5/16/2003
From: Edmond, OK, USA
Status: offline 		6" is fine. i fly mine at about 6 1/2 with the tank empty.

(in reply to Zippi)
       Post #: 8

RE: *U-CAN-DO .46 Tail Heavy* - 9/21/2004 3:53:53 AM   
fearlessJOE


 

Posts: 111
Joined: 4/4/2004
From: Bartlesville, OK, USA
Status: offline 		I fly mine @ 7". Flys great! TT 91 four stroke up front, waterfalls nicely.
I fly whole flights on high rate, maximum deflection, NO expo! If you fly slow enough you'll never miss it!!

(in reply to Zippi)
       Post #: 9

RE: *U-CAN-DO .46 Tail Heavy* - 9/21/2004 2:28:20 PM   
Zippi



Posts: 3223
Joined: 6/29/2004
From: Evansville, IN, USA
Status: offline 		Thank's for all the help guys.

(in reply to fearlessJOE)
       Post #: 10

RE: *U-CAN-DO .46 Tail Heavy* - 9/21/2004 5:10:54 PM   
Matt52x


 

Posts: 162
Joined: 7/26/2004
From: crown point, IN, USA
Status: offline 		Hey fearlessjoe,
If you have a 91 fs how did you get the cg so far back?

(in reply to Zippi)
       Post #: 11

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