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Miss ACE Hardware Griggs Hydroplane Allison V12 Turbo 1/25 Scale Model Kit Build How To Paint Decal U3 Turbinator Model 1/25 Scale with Figure Assemble Paint Waterslide Decals
Product Features
Worlds Fastest Piston Powered Hydroplane Plastic Model Kit
Decals included in the box
Display stand included
Includes Acrylic Paint Kit. (Spray Paint sold separately)
Includes assembly instructions
There is a mistake in the instructions. The instructions refer to a bag C, which is only for turbine models. The bags for the allison engines are in bags D and E. There should be no bag C in your kit.
H1 Unlimited is an American unlimited hydroplane racing league that is sanctioned by the American Power Boat Association (APBA). Until 2009, the series was known as ABRA Unlimited Hydroplane, in turn renamed from APBA Unlimited Hydroplane in 2004. The H1 Unlimited season typically runs from July through September, consisting of five races.
A hydroplane (or hydro, or thunderboat) is a type of motorboat used exclusively for racing. A unique characteristic of hydroplanes is that they only use the water they are on for propulsion and steering and not for flotation—when going at full speed they are primarily held aloft by a principle of fluid dynamics known as "planing," with only a fraction of their hull touching the water.
Almost all the H1 Unlimited hydroplanes are powered by Lycoming T55 turbine engines,[18] originally used in Chinook helicopters. The U-440 of the Bucket List Racing Team runs a T-53 turbine. As of 2022, the U-3 Go3 Racing is the only piston powered boat in the fleet, powered by a twin turbocharged Allison V-12.
The unlimited hydroplane racing series was founded in 1946 when the unlimited class of boats was allowed to compete following World War II and the subsequent availability of surplus aircraft engines. It had been disbanded in 1922 in favor of the newly introduced "Gold Cup Class."[1]
The world's first sanctioned unlimited hydroplane race was held 122 years ago in 1903 in Ireland at Queenstown, and was very modest by later race standards. That race was won by Dorothy Levitt, driving an 11-meter (35 ft) boat, powered by a 56-kilowatt (75 hp) Napier engine, at an average speed of 31.4 km/h (19.5 mph).[2]
The boats were initially restricted to engines of a maximum of 10.24 liters (625 cu in), later increased to 12.00 liters (732 cu in). Hulls with "steps" or "shingles" on the underside were prohibited.[1]
One reason for the rule change was to end the domination of its star driver, Gar Wood, who had won five consecutive Gold Cups from 1917. One win in 1920 in his twin Liberty L-12 powered Miss America, averaged 113.317 km/h (70.412 mph) in the 48 km (30 mi) race over an 8 km (5 mi) course and set a race record that stood until 1946. "King Gar" had entered fifteen Gold Cup heats during those pinnacle years. He finished first twelve times and second three times. Throughout the years, only two boats showed up to challenge Miss America; one of those was piloted by George Wood, Gar's younger brother, in Miss Chicago. Another reason for the rule change was to make racing more affordable.[1]
In 1929, the 725 cu in (11.88 L) Class was introduced by the Mississippi Valley Power Boat Association (MVPBA). The majority of these boats were powered by Hispano-Suiza 8 aircraft engines or Curtiss OX-5s. These boats were popular in the Southern and Midwestern US, but did not attract the media attention that the expensive and exotic-looking Gold Cup Class counterparts had