RE: QQ 85" Yak  
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All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> RE: QQ 85" Yak
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RE: QQ 85" Yak - 9/2/2005 5:14:53 PM   
RCAddiction



Posts: 901
Joined: 3/29/2002
From: Waxhaw, NC, USA
Status: offline 		Great news on the flight!

Not a huge fan of removing significant items to dial in a CG, as it assumes all of the wings are very uniform, and that heavy or light props or spinner don't matter, either. The flight manual should be helpful.

Question
Did you have any issues to achieve the desired CG using the DA50? Where did you put the rudder servos, batteries, tank, etc to achieve it or did you have to add weight to the nose? All stock locations as shown in the assembly manual?

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Lee

(in reply to mxcop114)
       Post #: 51

RE: QQ 85" Yak - 9/2/2005 5:18:37 PM   
mxcop114


 

Posts: 274
Joined: 6/12/2004
From: Tuckerton, NJ, USA
Status: offline 		Guys,
I forgot to tell you to use caution if you use the pull pull setup that comes with the plane. I had everything hooked up and tested it only to have the acble pull out of one end. I replaced it with the Dubro pull pull setup which seems stronger. I also mounted my tank just in front of the wing tube, all batteries up front for balance. I'm a little concerned with the reciever battery up there, but I did several range checks with the engine running and off with no problems. Also when you put the anti rotation pins in the manual says someting about not going by the photo and measuring from the wing to the hole in the pin. I trial fit it like that and it would not work with the o-ring and washer. I ended up using the same measurement in the photo and it worked great. Using the wood stand off blocks along with the standoffs that come with the DA the engine sticks out pretty far, but I beleive it should be like that anyway for better air flow from the prop. I'll post some pictures tonight.

Lee


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Team JR
Horizon Hobby

(in reply to mxcop114)
       Post #: 52

RE: QQ 85" Yak - 9/2/2005 5:31:59 PM   
mxcop114


 

Posts: 274
Joined: 6/12/2004
From: Tuckerton, NJ, USA
Status: offline 		Hey,
I will post some internal pictures of the setup tonight, I mounted the rudder servo where it is in the manual, regulator on top of fuel tank, all batteries up front in engine box. It you don't mount all in the engine box you will need weight with the DA 50. We will have to see if Quique comes up with any other ideas in the flying manual since he switched to DA engines. That should be online next week, hopefully sooner maybe.


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       Post #: 53

RE: QQ 85" Yak - 9/2/2005 9:02:51 PM   
RCAddiction



Posts: 901
Joined: 3/29/2002
From: Waxhaw, NC, USA
Status: offline 		Lee, which muffler did you end up using? The Slimline pitts extra weight would help, for sure. How bad was the cutout in the bottom of the cowl that you needed to make?

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Lee

(in reply to mxcop114)
       Post #: 54

RE: QQ 85" Yak - 9/2/2005 10:40:41 PM   
mxcop114


 

Posts: 274
Joined: 6/12/2004
From: Tuckerton, NJ, USA
Status: offline 		I used the Slimeline Pitts. I don't think the cut out was that bad, you'll see pictures later. Didn't have to cut it as much as the 3W.


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       Post #: 55

RE: QQ 85" Yak - 9/3/2005 2:20:04 AM   
mxcop114


 

Posts: 274
Joined: 6/12/2004
From: Tuckerton, NJ, USA
Status: offline 		Here are some more pictures. The battery right behind the motor on the bottom of the box was used for temperary weight only for balance. I will fly again in the morning and try to get a video.

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       Post #: 56

RE: QQ 85" Yak - 9/3/2005 1:19:41 PM   
sgolec


 

Posts: 21
Joined: 3/1/2004
From: Washington, PA, USA
Status: offline 		Anyone get a flight in yet ? mine is almost ready.
Not sure were to balance. Anyone know ?
I fixed to pound to light problem with my ZDZ 80.
I would rather bolt on power, not lead.

(in reply to mxcop114)
       Post #: 57

RE: QQ 85" Yak - 9/3/2005 5:44:23 PM   
RCAddiction



Posts: 901
Joined: 3/29/2002
From: Waxhaw, NC, USA
Status: offline 		MXCop, what final weight did you come up with? Also, did you fly with the additional weight of a spinner or only bare prop as shown?

< Message edited by RCAddiction -- 9/3/2005 7:18:35 PM >

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Lee

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       Post #: 58

RE: QQ 85" Yak - 9/3/2005 5:55:10 PM   
mxcop114


 

Posts: 274
Joined: 6/12/2004
From: Tuckerton, NJ, USA
Status: offline 		Read post #50 about CG. Seems pretty good there so far, maybe just slight nose heavy. Flys like a dream, very smooth and precise. No 3D yet, need more run in on motor.


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RE: QQ 85" Yak - 9/3/2005 9:20:11 PM   
Angus Balfour



Posts: 844
Joined: 10/27/2004
From: Glasgow, UNITED KINGDOM
Status: offline 		What price does this plane come in at? Is there a UK distributer for it?

Thanks,

Angus

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A. Balfour - SCOTLAND
Team JR, YS, www.emeraldhobby.com, Engel Modellbau, Flight Power

(in reply to mxcop114)
       Post #: 60

RE: QQ 85" Yak - 9/3/2005 10:25:12 PM   
bbuzzone



Posts: 54
Joined: 12/8/2003
From: Land O' Lakes, FL, USA
Status: offline 		Angus,

You can find this plane at http://www.somenzini.com/indexNuevo.htm The 85" runs USD 660, they are expecting the next shipment in October. THe plane is worth the wait and you won't find better customer service than what Wayne and Quique provide.

Buzz

(in reply to Angus Balfour)
       Post #: 61

RE: QQ 85" Yak - 9/3/2005 11:53:44 PM   
Angus Balfour



Posts: 844
Joined: 10/27/2004
From: Glasgow, UNITED KINGDOM
Status: offline 		Sounds good. Got a Vision at the moment, it flies well but I'm looking for something that will fly both precision and 3D a bit better.

Angus

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A. Balfour - SCOTLAND
Team JR, YS, www.emeraldhobby.com, Engel Modellbau, Flight Power

(in reply to bbuzzone)
       Post #: 62

RE: QQ 85" Yak - 9/4/2005 12:17:05 AM   
bbuzzone



Posts: 54
Joined: 12/8/2003
From: Land O' Lakes, FL, USA
Status: offline 		Angus,

You can find threads on both the 72" and 102" Yaks here. I think you'll see nothing but favorable comments. I'm "borrowing" the guts (engine, Rx, servos) from a plane that I just finished 3 weeks ago to complete this one. Hopefully that's enough of an endorsement for you! Best of luck.

Buzz

(in reply to Angus Balfour)