[quote]ORIGINAL: can773
Based on how similar this plane is to the Twister, I would just leave it where it is, fly it and go from there. No point in putting a bunch of effort in to move the CG back when it doesn't need to be.
ORIGINAL: crhammond
I just finished mine tonight: YS170, Hatori pipe and header, Hyde ARIA mount (this adds nose weight.)
Futaba 6014Rx, BLS451's on ailerons, BLS351 on rudder 3421SA's in stabs.
15x12x4 APC and True Turn spinner.
It is so nose heavy it isn't funny! I sure hope it needs to be at 185mm because it's going to take an effort just to get it there.
Chad, it is REALLY REALLY forward. It balances around 140mm right now with no battery... If I put the battery in the tail (which I can't since I can't get back there anyway) it gets to about 160mm.
Time to quit - I dinged the canopy trying to balance it. Nothing major that can't be fixed but it ticks me off when I haven't even run the motor yet. *SIGH*
I may post pics... try and figure out why it is so far forward.
I do have a small header tank over the gear. Just a 2oz tank. I can remove it but it's not going to make much of a difference. The 17x12 prop I have is heavier than the 15x12x4... Maybe I can find a lighter prop. I'll try removing the spinner and see where that puts it. The spinner back plate is pretty heavy.
How far forward is too far forward? I'm used to my big gassers where I am always having to move them back a bit from recommended to get them to stall for spin entries.