Why doesn't the Aerolite Spitfire use a Merlin engine?
The magnificent Rolls-Royce Merlin is now around 90 years old. It was an exceptional engine for its time, but it is a product of 1930s technology.
Even its most devoted supporters recognise that it is heavy, thirsty, expensive to maintain and, by modern standards, demanding to operate.
Would you choose a 1930s engine for your 2026 car?
Probably not.
Still less, perhaps, for a new aircraft.
The new-generation Aerolite Spitfire benefits from its modern 400 hp aero engine – lighter, more economical and designed to contemporary standards of reliability and maintainability.
With a 2,000-hour time between overhauls (TBO) — three to four times that of a Merlin — and a complete replacement cost comparable with the overhaul cost of a Merlin, the modern powerplant makes compelling practical and economic sense. It enables the Aerolite Spitfire to retain the presence and character of the original aircraft while providing a powerplant much better suited to regular recreational flying.
But What About the Sound?
As an aircraft approaches the display line, much of what spectators initially hear comes from the propeller. It is principally as the aircraft passes that the exhaust note and supercharger become more apparent.
The Aerolite’s engine and propeller combination is intended to preserve that essential sense of theatre: the look, presence and sound of a Spitfire, without the operating demands and expense of a 1930s powerplant.
If it looks like a Spitfire and sounds like a Spitfire…
Contact denise.mullen@aerolite-spitfire.com
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