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04-02-2008, 09:09 PM
| #1 (permalink) |
| "Hillbilly Hucker"   Join Date: Jan 2006 Location: Grayson, KY USA Age: 50
Posts: 282
 |  Great Planes 25% Yak 54 Does anyone know the recommeded CG for the Great Planes 25% Yak 54 with a DA 50 mounted on the nose, and three servos for the tail.
__________________ Go Lower, Lower, "Not that Low".  |
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04-02-2008, 10:42 PM
| #2 (permalink) |
| Into The Light I Command Thee  Join Date: Mar 2006 Location: Utopia
Posts: 663
| Re: Great Planes 25% Yak 54
Regardless of the engine used, the recommended CG location will stay the same. A quick look at the manual states the CG should be at 5 1/8" or 130mm from the leading edge of the wing at the fuselage. The range is -1/2" to +1/2" It has been reported that the recommended CG location is nose heavy. Acticipate moving aft. I flew an inch or more behind recommended.
__________________ To Fly or Not to Fly--That is the question.... FLYDawghouseRC.net Po Bro Member #1  |
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04-02-2008, 10:48 PM
| #3 (permalink) |
| "Hillbilly Hucker" Join Date: Jan 2006 Location: Grayson, KY USA Age: 50
Posts: 282
| Re: Great Planes 25% Yak 54
Thanks a bunch, I bought the plane second hand and wanted to make sure before the maiden that the CG is ok.
__________________ Go Lower, Lower, "Not that Low". |
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04-03-2008, 12:06 AM
| #4 (permalink) |
| NY 3DAV8R   Join Date: Apr 2007 Location: Syracuse, NY Age: 40
Posts: 71
| Re: Great Planes 25% Yak 54
The airframe flies best with the CG over the wing tube--approx 5-7/8" Brian
__________________ There are 3 types of people in this world, those who can count and those who can't..... |
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04-03-2008, 09:01 AM
| #5 (permalink) |
| "Hillbilly Hucker" Join Date: Jan 2006 Location: Grayson, KY USA Age: 50
Posts: 282
| Re: Great Planes 25% Yak 54
How is your landing gear holding up? Mine seems to be very weak, I'm thinking of finding so carbon gear to keep from having prop strikes on the mejzlik prop. I would actual like to find a carbon gear that is maybe and inch taller than the stock gear.
__________________ Go Lower, Lower, "Not that Low". |
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04-10-2008, 07:46 AM
| #6 (permalink) |
| NY 3DAV8R Join Date: Apr 2007 Location: Syracuse, NY Age: 40
Posts: 71
| Re: Great Planes 25% Yak 54
I did install the Graphtec LG. It is exactly as you want. An inch taller and a lot stronger.
__________________ There are 3 types of people in this world, those who can count and those who can't..... |
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04-19-2008, 06:00 PM
| #8 (permalink) |
| NY 3DAV8R Join Date: Apr 2007 Location: Syracuse, NY Age: 40
Posts: 71
| Re: Great Planes 25% Yak 54
Mechanic, I went with the Fuji 43 EI-2. I like gas engines and I found it for a really good deal. GP recommends this setup as tried and true for the gasoline route. I went with as light a setup as possible. Hitec 5925's in the ailerons/elevators and a single Hitec 5955 for the rudder. Dual output 2300 mAh A123's for the Rx and an 1100 VPX pack for ignition. Carbon prop, spinner & landing gear. Thought about the carbon wingtube but haven't bought it yet. Have the Graphtec carbon tail gear but it's heavier than the stock one, so I didn't install it. 13 lbs even..... Pactra Lexan Window Tint to black out the canoppy.....
__________________ There are 3 types of people in this world, those who can count and those who can't..... |
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04-19-2008, 09:31 PM
| #9 (permalink) |
| Into The Light I Command Thee Join Date: Mar 2006 Location: Utopia
Posts: 663
| Re: Great Planes 25% Yak 54
Check out the DL-50 or 3MM TOC. I would not recommend the fuji 43. Had the fuji 46 and did not like the performance. It was best for constant speed flying. Put the rudder servos in the tail and batteries in the rearmost position and CG will not be an issue.
__________________ To Fly or Not to Fly--That is the question.... FLYDawghouseRC.net Po Bro Member #1 |
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06-30-2008, 11:11 PM
| #10 (permalink) | ||||||||||||||||||
| Flyin' Around  Join Date: Apr 2008
Posts: 1
| Re: Great Planes 25% Yak 54
Thanks, JM | ||||||||||||||||||
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07-01-2008, 12:43 PM
| #11 (permalink) | ||||||||||||||||||
| Flyin' Around Join Date: Oct 2006 Location: montreal, canada Age: 38
Posts: 9
|  Re: Great Planes 25% Yak 54
So what is your CG then 6 1/4" I have a DL 50 in the nose and I thought I would have to put stuff in the tail to get the CG right on. But now I am now moving the batteries forward and placed 3/8" stand-offs on the engine to moving the CG from 7 1/4 where I started to 162mm or 6 3/8 is now I think this is a little to far aftstill, what does everyone think? Also I am using a Vess 23/A prop, am I going to hit the ground with this big bad boy? | ||||||||||||||||||
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