Sat, 23 May 2015 08:55
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(4-7 mph) Light breeze
Started out with darkish cloud, but then it brightened up with the cloud thinning, low wind, and just warm enough, so overall very nice weather. Did a bit more practice on pirouetting rainbows, but I need lots more. I pulled off some half decent continuous quite high speed piro flipping during a couple of flights, but still really want to master the controlled slower aspect to it. So I'm rating my flying today as okay, but could do better. A significant discovery about my Goblin today made by Richard, after asking him to have a fly to see if he thought it felt weird, the answer was yes, very. So, I'll just describe the first moment of discovery. Quite simply after rotating at the top of a stall turn and pulling up as the heli is flying downwards, there is a very significant amount of left aileron occurring (or at least it’s flying as if its receiving left aileron input). Strange, the VBar doesn't correct it at all. Whatever the cause is, it's definitely affecting several aspects of flight, not just stall turns. I've tried very low, medium, and high cyclic gain, and the characteristic is still the same, so it's not that. I've checked all VBar settings and there's nothing wrong there, I'm pretty sure anyway. So I don't know what to do. I might take the VBar out of my 450 Dominator and put that in it and do a brand new set-up, but I really don't think that will make any difference. Richard mentioned something about mechanical/aerodynamic phasing (I think he said phasing, not sure) possibilities, so I'll Google that tomorrow. To conclude, if the Goblin was flying as it should be, it would have been at least a 4 star, possibly even a 5 star :)
Sat, 23 May 2015 17:34
There's nothing on Google about phasing issues on the Goblin, so I don't think it can be that. Apparently VBar does support phasing adjustments up to 45 degrees, but you probably don't want to fiddle with that unless nothing else works. Might be the job for a professional.
Sat, 23 May 2015 18:16
Yes. I'm now thinking take it to Ian and let him have a play :) Flipping thing.
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