Mustang evolved from a British contract in 1940 for a
fighter airplane that could go faster than any other current
American fighter. Designated the NA-73X project, the Mustang
was designed in just 117 days. The first Mustangs were
delivered to Britain in November, 1941. Initially equipped
with an Allison engine, the performance of the Mustang was
found inadequate. A few Mustangs that were being used for
engine experiments were provided with the Rolls-Royce Merlin
engine and the increase in performance caused North American
to redesign the airplane. The Merlin equipped Mustangs were
to become the best fighter of the Second World War, serving
both in Europe and the Pacific.
emergence of jet fighters at the end of World War II, the
Mustang, as well as every other piston engine fighter, were
rapidly becoming obsolete as warplanes. As a result,
thousands of Mustangs were scrapped or sold for a fraction
of what they were worth. Air race pilots took advantage of
this, and quickly bought P-51's and modified them to compete
in the closed course Thompson Trophy Race.
P-51K Mustang was flown by Robert Swanson in the 1946
Thomson Trophy Race. Swanson's first Mustang for the 1946
National Air Races was damaged when it crash landed during a
Thompson Trophy qualifying lap. With only several days
before the race, Swanson found another Mustang and named it
"Second Fiddle". Although "Second Fiddle" only took a fifth
place in the Thompson Trophy Race, it did turn in the
fastest single lap speed of 378.4 miles per hour.
P-51K single-seat land based fighter
One 1,680 hp Packard Merlin V-1650-7 piston engine
Maximum speed 442 mph at 24,500 feet;
climb 10 minutes to 20,000 feet;
range (normal) 950 miles
7,000 lb.; 9,200 lb. gross
Span 37 ft.; length 32 ft. 3 in.; height 8 ft. 8 in.
Mustangs, some highly modified are still
the mainstay of the unlimited class at the Reno races.
Dago Red...the most successful P51 modern racer