Splitting crank pins

Friday, May 11, 2012
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Opinion is divided on the need to have even firing intervals for engines. With very few exceptions, road vehicle engines fire at equal intervals, while many two-cylinder engines fire at unequal intervals, and some three-cylinder engines in the past h... read more
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More on nose-fed crankshafts

Thursday, March 29, 2012
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In the previous article on crankshafts, the use of the crankshaft as a centrifugal separator was briefly discussed. The principle of centrifugal separation/refinement is well understood, and one only has to hear of news stories about uranium enrichme... read more
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Nose feed

Thursday, February 09, 2012
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The use of nose-feed crankshafts has been mentioned before, both in these RET-Monitor articles and in Race Engine Technology magazine issue 49. It is certainly not a new concept, having been used in the Rolls-Royce Merlin engines* with great success,... read more
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Aerodynamic counterweights

Thursday, December 15, 2011
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In the search for increased performance, the common direction of engine development has been to increase engine speed incrementally. While this trend is somewhat on the wane - owing to various regulations such as absolute rpm limits as in Formula One... read more
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The crossplane I4

Thursday, November 10, 2011
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Yamaha is the only company running an I4 in the MotoGP series, a layout to which it has been loyal since the inception of the current four-stroke formula; all the other engines are now V4s. Having the cylinders in a vee, rather than in a line, allows... read more
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Formula One crankshafts after 2014

Thursday, September 22, 2011
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The provisional rules for the 2014 Formula One World Championship engines are now available to view on the FIA website. The change from the current 18,000 rpm 2.4 litre V8s to the 2014 1.6 litre V6 turbocharged engines was not straightforward, and ca... read more
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Is nitriding the only option?

Thursday, August 11, 2011
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The crankshaft lies at the heart of the fundamental mechanical system in the vast majority of race engines. Only rotary race engines don't have what we might call a crankshaft, although other mechanisms exist and which have been tested to turn recipr... read more
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Modern crankshaft machining methods

Monday, July 04, 2011
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The manufacture of crankshafts is not a straightforward matter; many pitfalls await the adventurous novice attempting to make his own crankshaft, and there are reasons why there are so few reputable race crankshaft manufacturers. The general trend f... read more
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Why not titanium?

Thursday, May 12, 2011
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There are some materials regulations in motor racing that don't make sense, because they stifle development and outlaw materials which just make good sense. The ban by many race series on the use of magnesium is one example of this, given that it has... read more
Tags :  crankshafts

Sealing oil drillings

Thursday, March 31, 2011
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One of the functions of a crankshaft, besides playing its fundamental part in an engine's basic mechanism, is to transfer oil, especially to the con rod big-end bearings. In some cases, where all main bearings are directly fed from the main oil galle... read more
Tags :  crankshafts
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