Straight-eight engine
Also, due to the even number of power strokes per revolution, a straight-eight does not produce unpleasant odd-order harmonic vibration in the vehicle's driveline at low engine speeds.[1] Also, due to the length of the engine, torsional vibration in both crankshaft and camshaft can adversely affect reliability and performance at high speeds.Other notable straight-eight-powered automobiles were built by Daimler, Mercedes-Benz, Isotta Fraschini, Alfa Romeo, Stutz, Stearns-Knight and Packard.In the United States in the 1920s, automobile manufacturers, including Hupmobile (1925), Chandler (1926), Marmon (1927), Gardner (1925), Kissel (1925), Locomobile (1925) and Auburn (1925) began using straight-eight engines in cars targeted at the middle class.In the late 1920s, volume sellers Hudson and Studebaker introduced straight-eight engines for the premium vehicles in their respective lines.[6]: pp99-103, 116–117 In Europe, many automobile factories had been destroyed during World War II, and it took many years before war-devastated economies recovered enough to make large cars popular again.[6]: pp99-113, 119–135 The British Army selected Rolls-Royce B80 series of straight-eight engines in the Alvis FV 600 armoured vehicle family.The Alvis Saladin armoured car was a 6x6 design with the engine compartment in the rear, a 76.2mm low pressure gun turret in the centre and the driver in front.Bugatti, Duesenberg, Alfa Romeo, Mercedes-Benz, and Miller built successful racing cars with high-performance dual overhead camshaft straight-eight engines in the 1920s and 1930s.The straight-eight was actually built as a symmetrical pair of straight-four engines joined in the middle at common gear trains for the camshafts and superchargers.The Alfa Romeo 158/159 Alfetta was originally designed in 1937 and won 47 of 54 Grands Prix entered between 1938 and 1951 (with a six-year gap in the middle caused by the war).The 300SLR was famous for Stirling Moss and Denis Jenkinson's victory in the 1955 Mille Miglia, but notorious for Pierre Levegh's deadly accident at the 1955 24 Hours of Le Mans.
Straight 8Leyland EightDelageinternal combustion enginecylinderscrankcaseside-valveoverhead-valvesleeve-valveoverhead-camcrankshafttorsional vibrationharmonic damperfatigue crackingmain bearingjournalinline sixdrivelinecamshaftcentrifugal forceconnecting rodsV8 engineCharron, Girardot et VoigtWorld War IMercedesMercedes D.IVaerodynamicDe Dion-BoutonScripps-BoothCadillacDual overhead camshaftIsotta FraschiniTipo 8Leyland MotorsInternational Motor ExhibitionOlympia, LondonDuesenbergBugattisdouble overhead camDaimlerMercedes-BenzAlfa RomeoStearns-KnightPackardHupmobileChandlerMarmonGardnerAuburnLycomingLocomobileErrett Lobban CordModel JHudsonStudebakerOldsmobilePontiacGeneral MotorsBuick straight-eightoverhead valveOldsmobile straight-8Pontiac straight-8flathead enginescrossplaneV16 enginesflathead V8LincolnChryslerairshipBeardmore TornadoWorld War IIFlxibleaviation gasolinehigh octaneOldsmobile straight-8 engineL-headRolls-RoyceAlvis SaladinSaracenStalwartCenturionDennisBugattiType 59Grand PrixMillerIndianapolis 500French Grand Prixoverhead camshaftthree-valve-per-cylinderBugatti Type 35Grand Prix motor racingRoots superchargedAlfa Romeo 8CMille MigliaLe MansFormula OneFerrariAlfa Romeo 158/159 Alfettasupercharged300SLRStirling MossDenis JenkinsonPierre Leveghdeadly accident1955 24 Hours of Le MansList of GM enginesPosthumus, CyrilWayback Machinevan Damme, StéphaneEngine configurationspiston enginesAtmosphericCornishRotativeBourkeCam engineCamlessCompoundDouble-acting cylinderFlatheadFree-pistonStelzerHeron headIntake over exhaustOscillating cylinder