Half Fast wrote:It’s even worse.
Paul, I believe 430lbs useful load minus two 200lb occupants leaves 30 pounds for fuel, not 40. That’s only 5 gallons.
You're right, Half. Thanks for catching my error. I just watched this week's AOPA Live segment about the Vashon. Tom Haines commented that, like all LSAs, this one is hampered by the arbitrary 1320 pound weight limit. I'm going to have to educate him on why "arbitrary" is the wrong choice of words, and maybe teach him how to compute kinetic energy!
I actually think you both are right.
The 1320 limit is quite arbitrary in the sense that going over that limit doesn't really mean that much. The concept of increasing kinetic energy and its effect on survivability during off-airport landings ( or general mishaps ) is more appropriately defined as a range rather than a hard limit.
You would not consider off-airport landings in something Cessna 172 to be particularly more dangerous than similar landings in a typical LSA – as you move up the ladder in in terms of higher wing loadings and higher stall speeds you being to lower your odds significantly but it is still a range – definitely not a linear one but a range nonetheless.
Ultimately , if you are unlucky enough, you can die on a bicycle and, if you are lucky, you can survive an off-airport landing in a Lancair - everything in between is a range of probabilities.