A straight-twin engine, also known as an inline-twin, vertical-twin, or parallel-twin is a two-cylinder piston engine where two cylinders are arranged in a line along a common crankshaft.
Yamaha Motor Co., Ltd. is a Japanese manufacturer of motorcycles, marine products such as boats and outboard motors, and other motorized products. The company was established in 1955 upon separation from Yamaha Corporation, and is headquartered in Iwata, Shizuoka, Japan. The company conducts development, production and marketing operations through 109 consolidated subsidiaries as of 2012.
A snowmobile, also known as a Ski-Doo, snowmachine, sled, motor sled, motor sledge, skimobile, or snow scooter, is a motorized vehicle designed for winter travel and recreation on snow. It is designed to be operated on snow and ice and does not require a road or trail, but most are driven on open terrain or trails. Snowmobiling is a sport that many people have taken on as a serious hobby.
Polaris Inc. is an American manufacturer of motorcycles, snowmobiles, all-terrain vehicles, and neighborhood electric vehicles. Polaris was founded in Roseau, Minnesota, where it still has engineering and manufacturing. The company's corporate headquarters is in Medina, Minnesota. The company manufactured motorcycles through its Victory Motorcycles subsidiary until January 2017, and currently produces motorcycles through the Indian Motorcycle subsidiary, which it purchased in April 2011. Polaris produced personal watercraft from 1994–2004. The company was originally named Polaris Industries Inc. and was renamed in 2019 to Polaris Inc.
Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Rotax GmbH & Co KG, in turn owned by the Canadian Bombardier Recreational Products.
Bombardier Recreational Products Inc., operating as BRP, is a Canadian manufacturer of snowmobiles, all-terrain vehicles, motorcycles, and personal watercraft. It was founded in 2003, when the Recreational Products Division of Bombardier Inc. was spun-off and sold to a group of investors consisting of Bain Capital, the Bombardier-Beaudoin family and the Caisse de dépôt et placement du Québec. Bombardier Inc., was founded in 1942 as L'Auto-Neige Bombardier Limitée by Joseph-Armand Bombardier at Valcourt in the Eastern Townships, Quebec.
The Pterodactyl Ascender is a family of U.S. designed and built ultralight aircraft that were sold in kit form between 1979 and 1984 under Pterodactyl Limited and is currently being sold by DFE Ultralights.
The Cuyuna 430 and Cuyuna 340 are a family of two-stroke, twin-cylinder piston snowmobile engines that were redesigned to serve as ultralight aircraft powerplants.
The Birdman Atlas is a single-seat, high wing, single engine in pusher configuration, ultralight aircraft that was based upon the Eipper Quicksilver design.
The 2si 230 is a family of single-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.
The 2si 460 is a family of in-line twin-cylinder, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.
The 2si 540 and 2si 500 are a family of in-line twin-cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engines that were designed for ultralight aircraft.
The 2si 215 is a family of single-cylinder, fan-cooled, two-stroke, single ignition, aircraft engines that were designed for ultralight aircraft.
The 2si 690 is a family of in-line three cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engines that were designed for ultralight aircraft.
The 2si 808 is a family of in-line three cylinder, liquid-cooled, two-stroke, dual ignition, aircraft engines that were designed for ultralight aircraft.
The Kawasaki 340 is a Japanese twin-cylinder, in-line, two-stroke engine that was designed for snowmobiles and produced by Kawasaki Heavy Industries until the early 1980s. The engine was available in air-cooled and liquid-cooled versions.
The Airborne Avenger is an American ultralight aircraft that was designed and produced by Airborne Wing Design in the early 1980s. The aircraft was supplied as a kit for amateur construction.
The Advanced Aviation Husky, Hi-Nuski and Coyote are a family of American ultralight aircraft that was designed and produced by Advanced Aviation. The aircraft was supplied as a kit for amateur construction and introduced in 1978.
The Rotec Rally is a family of American ultralight aircraft that was designed by Bill Adaska in 1977 and produced by Rotec Engineering of Duncanville, Texas. Adaska had been an aeronautical engineer at Bell Helicopter and the French helicopter manufacturer, Aerospatiale, prior to starting Rotec. The aircraft was supplied as a kit for amateur construction.
The Fletcher Hercules is an American two-seat ultralight trike that was designed by AW Harrison and produced by Fletcher's Ultralights of Turlock, California, in the late 1990s and early 2000s. The aircraft was supplied as a kit for amateur construction and was also available as a completed aircraft.
