Piston ring flutter

Tuesday, August 20, 2013
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Pistons rings are items that we are perhaps not accustomed to having to worry too much about, especially if our race engine is not of bespoke design. Once ‘bedded-in’, they normally form a reliable seal between the piston and bore. Howev... read more
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Piston pin design features

Thursday, July 04, 2013
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In its most basic form the piston pin is simply a piece of round bar. However, very few engines – other than very basic, low-budget units – are equipped with solid gudgeon pins as standard. Of course, in the rarified world of racing, ther... read more
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Oval pistons

Thursday, May 16, 2013
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For those who don’t follow motorcycle racing or development, there may be interesting things – quite aside from the racing – which you are missing out on. However, even engineers who have a veritable aversion to motorcycles must hav... read more
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Piston rings – materials

Thursday, February 21, 2013
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While there is always something new going on with piston design, we tend to see less obvious development with piston rings. Visually it is pretty obvious with a piston that someone has a new concept or idea, and we can see from looking at new pistons... read more
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Crown coatings

Thursday, November 08, 2012
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With the push for ever-improved engine efficiency in general, and a specific drive toward increased torque and power output from race engines, there has been much work done on coating piston skirts to reduce frictional losses. There are various optio... read more
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Circlips

Thursday, September 27, 2012
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There are a number of fasteners that are described as critical in an engine, but if an engineer is asked what these are, he or she will generally give a list of thread fasteners such as con rod bolts or cylinder head studs. Certainly high on any list... read more
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Piston ring materials

Monday, August 13, 2012
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The piston rings used in a race engine are primarily a seal, controlling the flow of oil upwards into the combustion chamber and the flow of blow-by gases into the crankcase. We don't want oil to get into the combustion chamber; in large enough quant... read more
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Piston pins - material choices

Tuesday, July 03, 2012
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Piston pins play a vital, literally pivotal, role in the reciprocating internal combustion engine. Mechanically they are an extremely simple component and, in their most basic form, could be a simple, short length of solid bar. Indeed, many productio... read more
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