Temp is 36 degrees, wind is gusty from 10-30mph so I started out by taxing around with steerable nose gear and differential thrust. Quickly learned that need to apply little throttle to turn the
SR-71 while you taxi. Guess what, since I built light, the 2 64's had plenty of power to spare. Will see what happens in flight.
View attachment 150984
Now decided to find the CG of this SR-71. First noticed with howling wind, a small tip of nose down and the wind drives the fuse to the ground and a small amount of nose up, just flipped it vertically. So first point, elevator is going to be touchy.
Trying to find balance point, held vertical fuse by 2 fingers and let go of other hand restraining it until the winds were probably 20-30 to see which way the fuse pitches. Then, would re-position the battery (use wide painter's tape) and wait until high winds came to see what happens. I ended up moving it 3 times aft so, I was nose heavy.
So rather than than chuck an airplane and let it possible be damaged by potential and kinitic energy, I let my gusty(15-30mph) wind determine my CG and nothing is destroyed. Used my windsurfing meter to measure temp and wind speed)
Next step, will it get into the air?
So now what I do is, wait for a good steady wind, have
left thumb on the gimbal to control throttle
grab CG point with right hand
lift about 8" off ground
move throttle with thumb to about 1/3 power
now move model forward horizontal to ground and release quickly
quickly bring TX so right hand grabs elevons(or ailerons and elevator)
vary throttle to keep it flying (remember you have winds anywhere from 10 to 30)
If not near proper CG, nose plane up or down and then kill power.
Object is try to keep plane level without gaining height.
Result----The SR-71 made a flight and was hit with a high gust and I got it down safely.
Slight damage, the battery on the long nose cracked the vertical fuse, so will need to re-enforce that and the nose gear strengthen.
Video will follow, also I have a thread on my work I did to get to this point.