With that much fuel load, there probably is no Vr. He flies straight down the runway and depends on the curvature of the earth to gain altitude.

I used to climb towers but the tallest was 500 ft. It takes a while to get acclimated, and the going is slow at first, but gets faster as you become more comfortable. You have to be in fairly good aerobic shape because you're not just carrying your own weight but the tools as well. Tower climbing is especially hard on…

That circuit is kind of a rube goldberg design. It doesn't look like the CD4011 is needed at all. And you wouldn't need the big power MOSFET if you operated the headlight relay(s) instead of the headlights directly.

I'm confused by the dyno chart. The blue line is obviously torque. What does the black line represent? Is the black line HP? If so, the stated HP doesn't match up to any scale on the chart which shows torque values on both sides.

The good news, I suppose is that modern cars are more crash worthy.

He's morally handicapped. That should be good enough to park in the handicapped spot without penalty.