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Old Sep 08, 2012, 01:09 AM
KE Spin is offline
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Cdee, back 1 inch from where? Got a pic?
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Old Sep 08, 2012, 01:24 AM
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Well, instead of using velcro, I cut out a slot between the top carbon rods and the wing. My 3s packs sit almost half way back on the wing. This balances it almost on the rear CG.

I thought about using the 70+g motor, but I wanted the option of going up in power if needed. I figure the additional 1-3 ounces from the motor and the battery pack would not make a huge difference in flying quality.
Old Sep 08, 2012, 09:56 AM
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Cdee, back 1 inch from where? Got a pic?
Just moved the battery back about an inch from where it was when balanced with the 78g motor, with the 1600mAh nano-techs the center of the battery was right about the leading edge of the wing, with the 100g, back from there, 1in.
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cdee
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Old Sep 08, 2012, 10:55 AM
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Do you like the way it flies with the 100g vs. the 78g motor?
Old Sep 08, 2012, 07:36 PM
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Flew the Extra in winds of 12 with gusts to 20+ for my demo flights for the C.A.P. cadets and it handled very well. I flew with both the 1800's and 2200's and was very impressed the plane's performance.

Funfly tomorrow...looking forward to some more fun in the wind.
Old Sep 08, 2012, 09:34 PM
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Does anyone run a bit of right thrust in their setup?

I flew mine today. It was rather windy, but it did really good. I am about 3/4 back on the CG, but I think it needs to go back even further. I have a tad bit of up elevator trim, and when I do an inverted test, it pitches down. Not bad, but feel like I need to go further back. I checked the motor and compared it to the wings and tail and everything is at 0. I figured a bit of right trust might be needed, but not sure.
Old Sep 08, 2012, 10:51 PM
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I'm using the stock wood mount and I don't see any angles and have been very happy with way the 330 is flying.

I was initially concerned about the lack of thrust angles (when building) but flying the 330 made me forget all about them.
Old Sep 09, 2012, 12:21 AM
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I am currently setup with the wood motor mount and no thrust angle, did experiment a little with some "down and to the right", maybe a little better but nothing obvious.
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cdee
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Old Sep 09, 2012, 09:51 PM
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Well, I flew another 5 packs thru it this afternoon. The wind was not as bad, although it was still between 6-12mph. I moved the cg about 5/16 to a 1/4 inch behing the rear cg. Flies much better. When I go inverted, it now requires just a tad of down elevator to maintain level flight. I think I have it in the sweet spot, so now I will determine how much further back I need my battery to slide. Really enjoying the airplane so far. I am going to order the slick for my son. Then i will be able to compare directly as well.
Old Sep 09, 2012, 10:15 PM
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Yes, I found that a rearward cg is the sweet spot for this plane. I'm almost completely neutral (flys almost perfectly level when inverted).

Had a great time at our funfly today with winds 5-10mph and the Extra performed very well and received some nice comments from a few of the balsa guys. :-) Also, with much help from the Extra, I also won the spot landing contest. Slight headwind and a nice glideslope resulted in 16" from the designated landing spot marker. I thought that perhaps the FunCubs might win, but the Extra bested them by 2". That's what I call close.
Old Sep 09, 2012, 10:24 PM
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Originally Posted by KE Spin View Post
Yes, I found that a rearward cg is the sweet spot for this plane. I'm almost completely neutral (flys almost perfectly level when inverted).

Had a great time at our funfly today with winds 5-10mph and the Extra performed very well and received some nice comments from a few of the balsa guys. :-) Also, with much help from the Extra, I also won the spot landing contest. Slight headwind and a nice glideslope resulted in 16" from the designated landing spot marker. I thought that perhaps the FunCubs might win, but the Extra bested them by 2". That's what I call close.
KE Spin... grats on the spot landing win!
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cdee
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Old Sep 10, 2012, 10:22 PM
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Made my own wing fences today. Same as the factory ones, but just a little taller. This was the first time I flew it with any fences on. Wow, totally different plane. Its really a joy to fly now.
Old Sep 10, 2012, 10:26 PM
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Glad you got them on and liked the result.

I won't be without mine.
Old Sep 10, 2012, 10:35 PM
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Glad you got them on and liked the result.

I won't be without mine.
Thanks...I can't believe I've been flying this long without them. The fences combined with a 45" wingspan seems optimal.
Old Sep 10, 2012, 10:40 PM
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So do you still like the slick better, or is this getting really close?

Ok, now for the big question... What differences are you guys seeing with the wing fences?


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