RE: parkzone vapor ?
The best harriers are seen when letting the battery "hang". Dont clip it in place just connect it and leave it dangle. We call it a "Hanging Chad". Works great and as you pull back on the elevator the CG moves back farther as the battery swings rearward. 60 degree + harriers with no wing rock are seen all day long with the battery hanging. Once you get the throttle managment part down pat the sky is the limit. These little things rock.
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