|Nov 16, 2003, 04:51 PM|
Joined Jan 2003
Electrified 15 Year old Gentle Lady Maidens!
My dad built a gentle lady about 15 years ago and put it in his attic, never flew it! He had it modified to take a speed 600 motor with 8x4 folder direct drive.
He gave it to me about 3 weeks ago and said have fun with it! I don't think he expected me to get it in the air!
I did a little motocalcing and found that the speed 600 he had in it would have flown the plane but at low efficiency (40%) and high amps (30A).
I found a used graupner speed 480 7.2 v geared 3.45:1 here on the 'zone and snapped it up. It came with a 20 A ESC and 11x8 CAM folder. This motor and gb has about the same weight as the speed 600 and produces 70%+ of the thrust at 30% of the amps.
Got it all set up and put 7 cells 600 mah nicads up front.
Will it fly? Everything looked favorable despite over a decade in storage!
I did my range check and everything looked good. A light wind was blowing from the southeast..... The moment of truth!
With a little run I gave it full throttle and it left my hand. It pulled up very nice, I had to give a couple clicks down trim to avoid a stall. It was climbing nicely now. A couple of neighborhood kids were watching me fly in the 10 acre vacant lot.
I didn't take it too high, maybe 200 feet. Just cruised around to see its manners. I cut power to test the glide. I found I had to give it a couple clicks of up with power off, but the glide was nice and flat. I took about 3 or 4 minutes to come down from 200 feet with no thermal activity.
I need more mah's to get to thermal hunting altitude. I have a couple of kokam 1500's on their way. 2s2p of those should give me about 20 minutes WOT for several climbs. The climb will likely remain kind of sedate, 8 cells NiMh would be better, but I like light and duration right now.
Heres a photo of this Blast from the Past!
|Nov 16, 2003, 07:21 PM|
Joined Jan 2003
Cool, I wasn't sure, a friend of mine had a gentle lady and it looked very similar, he thought maybe they had changed some of the details over the years? But you're right, I'm not sure of the name.
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