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2. Park Tool - Wikipedia

   en.wikipedia.org/wiki/Park_Tool

   A Park Tool bicycle work stand. The founders of Park Tool along with James E. Johnson developed a clamping device on their original bike repair stand, for which they received a United States Patent in 1976. [3] The company has applied for and has been granted many patents since then, including a pizza cutter shaped like a penny-farthing.

3. Two-stroke engine - Wikipedia

   en.wikipedia.org/wiki/Two-stroke_engine

   Animation of a two-stroke engine. A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston (one up and one down movement) in one revolution of the crankshaft in contrast to a four-stroke engine which requires four strokes of the piston in two crankshaft revolutions to complete a power cycle.

4. ILO-Motorenwerke - Wikipedia

   en.wikipedia.org/wiki/ILO-Motorenwerke

   The ILO-Motorenwerke GmbH 2-stroke motor company in Pinneberg, Germany existed from 1911 to 1990 and was one of the biggest manufacturers of two-stroke engines in Germany. The term ‘ILO’ comes from the constructed language Esperanto and means "tool". In 1959 it was sold to Rockwell Manufacturing Company. 1911 to 1930s.

5. Two- and four-stroke engines - Wikipedia

   en.wikipedia.org/wiki/Two-_and_four-stroke_engines

   The M4+2 engine, also known as the double-piston internal combustion engine, is a type of internal combustion engine invented by Polish patent holder Piotr Mężyk. [1] The M4+2 engine took its name from a combination of two-stroke engines and four-stroke engines. The two-stroke combustion engine is characterized by a simple construction and ...

6. Main bearing - Wikipedia

   en.wikipedia.org/wiki/Main_bearing

   The number of main bearings is primarily determined by the overall load factor and maximum engine speed. [1] Increasing the number of bearings in an engine will generally increase the size and cost of the engine, but also reduces bending stress and deflection caused by the distance from the crank pins to the nearest bearings.

7. Detroit Diesel Series 92 - Wikipedia

   en.wikipedia.org/wiki/Detroit_Diesel_Series_92

   The Series 92 engines were introduced in 1974. [8] Compared to the Series 71 engines they were derived from, the Series 92 featured a larger bore of 4.84025 ± 0.00125 in (122.942 ± 0.032 mm) and an identical stroke of 5 in (130 mm) for a nominal displacement per cylinder of 92 cu in (1,510 cc), from which the Series 92 derives its name.