Crankshaft: A counterweight is also used in many rotating systems to reduce vibrations due to imbalances in the rotating assembly.
From the 16th century onwards, evidence of cranks and connecting rods integrated into machine design becomes abundant in the technological treatises of the period: Agostino Ramelli's The Diverse and Artifactitious Machines of 1588 alone depicts eighteen examples, a number that rises in the Theatrum Machinarum Novum by Georg Andreas Böckler to 45 different machines, one third of the total.
Swank is also a musician, playing bass at various times in Crankshaft, Custom Floor, Loaded, and the LetDowns.
crankshaft | Crankshaft |
This makes this grade of steel an excellent material for such uses as gears, piston pins, crankshafts, and bike frames.
This configuration, an inline four cylinder engine with a longitudinal crankshaft had not been used since pre-WWI-era motorcycles such as the FN Four and Pierce Four, and overcame the problem of necessitating a horsepower-robbing 90-degree turn to the driveshaft.
The 2009 Yamaha YZF-R1 motorcycle uses the crossplane crankshaft and, in the absence of the 90° bank angle of the V8, must use a separate balance shaft geared off the crankshaft to eliminate the inherent rocking vibration (primary rocking couples) found in this type of crank.
The SRT4 engine had many improvements, including: stronger crank case webbing, a thicker deck with 11 mm head bolts (vs 10 mm), an oil drain back for the turbo, a cast aluminum structural oil pan, a higher capacity oil pump, a crankshaft of higher hardness steel, improved machining of bearing journals, oil squirters (to cool underside of pistons), eutectic aluminum alloy pistons made specially by Mahle, and forged connecting rods with cracked caps and 9 mm bolts.
The propeller was driven directly from the crankshaft via the gearbox using a 2:1 gear-reduction ratio which enabled the engine to operate at full power while accommodating the operational requirements of the propeller which necessitated the slower maximum rotational speed of 1800 rpm.
Because of this, dampeners are designed with a specific weight and diameter to reduce mechanical Q factor, or dampen, crankshaft resonances.
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Both Frederick Henry Royce and Frederick W. Lanchester have strong claims to the invention of the vibration damper, with the latest research showing Rolls-Royce using a crankshaft slipper (friction) vibration damper on their 1906 30HP models, however Royce had not submitted it for patent.
In 2008, Hayes won the Daytona 200 but was disqualified soon after for an illegal crankshaft.
Other changes included the use of roller bearings for the crankshaft, forged (rather than cast) rear suspension components, and the chassis was designed to run with hydraulic dampers from the outset.
A flat-plane crankshaft version of the VK45DE was used by Nismo for Super GT races with the Nissan GT-R instead of using the GT-R's VR38DETT twin-turbo V6 engine.
It is frequently used as a supercharger in engines, where it is driven directly from the engine's crankshaft via a belt or, in a two-stroke diesel engine, by spur gears.
The Siniai was powered by two 500 hp Siddeley Tiger water cooled engines, a new V-12 design produced by combining two straight-6 Siddeley Pumas onto a single crankshaft.
Unveiled in 1966, it was one of the first production overhead camshaft designs to use a rubber toothed belt to drive the camshaft from the crankshaft (an honor shared with the 1966 Pontiac OHC Six, and also the Fiat DOHC engine of 1966), a method developed in 1956 by Bill Devin.