Need trimming advice and help with ID
Hi,
Someone left this old beast at our field in rather poor condition. I put her back together and installed a Hacker electric motor in it. The maiden didn't go so well, so I thought I would ask for advice while I make repairs.
The wing has a 67" span and the fuse is about 38" long. She's a 3-channel bird with an undercambered airfoil for the wing (which was part of my downfall) and a flat-bottom airfoil for a lifting stab. I thought I would balance her at about 40% back from the LE but that appears to have not been enough.
My other mistake was trying to launch her on a windy day thinking that I could (ahem) handle her... well, nope. She was all over the sky and I had all I could do to get her back down on the ground with minimal damage. She was obviously tail heavy.
OK, so my questions are.... with a wing/stab setup like that, where should I have balanced her?
Also, does anyone recognize her??? From what little I could tell, that little lady did NOT want to come down. That undercambered airfoil was really doing its job!!! With the gusty breeze (yeah, I know, bad headwork) I had a tiger by the tail trying to get her on to the ground... I don't want to make that same mistake twice.
I have the feeling that once I solve these problems, she should be a very nice flying airplane.
Thanks,
Bob