After reading the Thread about Connie engines, I had a question.
My mechanical knowledge of piston engines is limited to small GA aircraft and their powerplants. I know very little about the operation of larger scale piston engines found on early generations of airliners such as Connie's and other airliners of the era. Or even WWII era fighters and bombers engines.
However, I am aware the that these types of aircraft used a leaded high octane aviation gasoline. I think somewhere between 125-130 octane, if memory is correct? That compared to the 100LL that's refined for avgas these days.
With relatively so few of these types of large piston engined classics flying today, my question involves their source of fuel.
With the original leaded high octane fuel they were designed to run on no longer produced by refiners, what do current operators use to run these planes? Can they be converted to run on 100LL, much as small GA planes can be converted to use auto gasoline with a lower octane rating than 100?
Lufthansa has been restoring a Constellation for about four or five years at an airport near where I live in Maine. They even built a hangar for the project. When completed, the aircraft will be flown to Germany. Also, I'm curious to know where all the fuel will come for the flight assuming it's not normal 100LL? How much fuel does it take to fuel a piston of this size for a trans-Atlantic flight. .
[Edited 2013-10-07 15:40:12]
[Edited 2013-10-07 15:42:44]