Scale "V" Engines
Rolls-Royce V-12 Merlin II is the design of choice that Authentic Scale bases all its radiator water-cooled engines.
Rolls-Royce began the design of the Merlin 12 cylinder, 60 degrees, 27 liter, liquid cooled aircraft engine in the early 1930s. The first prototype designated PV-12 flew on a Hawker Hart biplane in 1935, using an evaporative cooling system. This unreliable system was replaced later by ethylene glycol that became available from the USA. Through a superb reliability improvement program, the Merlin engine became one of the most reliable piston aircraft engines ever produced.
Several versions were built over 15 years of production and a total of over 150,000 Merlin engines built. It was replaced by the Griffon engine.
Authentic Scale is currently designing a V-12, a V-8, an Inline-6, and an Inline-4 cylinder engine; all based on the V-12 Merlin II using the "one part fits all" design concept. All engines are water-cooled by radiator and designed to be mounted and operated permanently upside down or right side up.
All parts to be machined from CNC Solid Bar, external scale features and premium materials such as steel S4140, Titanium/Nickel/Chromium alloy, aluminum AL7075, Stainless Steel 0.5 mm tubing, making these engines a first-ever commercial production of water-cooled model engines - a new standard in the market.
EFI (Electronic Fuel Injection) system: "QuickFire EFI - Fuel, Fire & Fly." No more messing with pesky carburetors.
Standard custom engine mount.
Propeller spinners with scale ground adjustable blades for 3, 4, and possibly 5 blades in 1/5 and ¼ scales, with adjustable pitches up to 48 degrees for high thrust.
The V-12 engine comes standard with a 2:1 reduction gear.
The V-8 engine comes standard with a straight shaft.
Optional Electric Starter