Looks like 5000-feet-per-minute gearing was possible in 1922 [1]. Doing it with a linear track will be harder, but I don't think it's impossible. [1] http://bo

Looks like 5000-feet-per-minute gearing was possible in 1922 [1]. Doing it with a linear track will be harder, but I don't think it's impossible. [1] http://books.google.com/books?id=GPNKAAAAMAAJ&lpg=PA87&ots=m3CfdTTlEs&dq=5000%20feet%20per%20minute%20gear&pg=PA87#v=onepage&q=5000%20feet%20per%20minute%20gear&f=false http://books.google.com/books?id=GPNKAAAAMAAJ&lpg=PA87&ots=m...