The YS newbie kind who never look at the plumbing drawing when they are setting it up, Thats who

110S and a backup 110FZ Weight 5 pounds 8 ounces, Fuel sometimes 40 and sometimes 45% nitro, one inch short stack no muffler, Propellor 13x11, static RPM 11,000 no valve float, unloaded who knows, takeoff roll from one foot to two from release depending on wind, speed a breathtaking three count from #1 to #2.