Composites

Tuesday, July 03, 2012
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There are a wide range of materials used in the racing powertrain, but although much progress has been made since man started motor racing more than a century ago, the vast majority of a modern race engine and transmission is still made of metal. Ho... read more

Losses in electric motors

Tuesday, July 03, 2012
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In designing or developing a race engine, we traditionally spend a lot of time, effort and money on mitigating frictional losses. We try to minimise heat rejection to oil and water. Efficiency equals performance, so we try to make the engine as effic... read more

Future cracked

Tuesday, July 03, 2012
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Defined as "a device supporting a mechanical component and enabling relative movement to another with the minimum of loss of power", a bearing is not just about the selection of the most appropriate material but also - you might not be surprised to l... read more
Tags :  bearings

Asymmetrical profiles

Tuesday, July 03, 2012
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"What goes up must come down." I'm sure we've all heard that at some time, and a true enough statement most of the time (but not as it seems to gasoline prices at the pump). But what has this to do with cam design, I hear you ask? Well, if you substi... read more
Tags :  camshafts

Electroless nickel

Tuesday, July 03, 2012
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The technique of electroless nickel plating has been used widely in race engines for a long time. Electroless nickel is a family of coatings rather than a single coating, and a number of electroless nickel 'composite' coatings are available. Even whe... read more
Tags :  coatings

The effect of con rod length

Tuesday, July 03, 2012
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Con rods are part of the fundamental mechanism at the heart of almost every race engine in the world, and there is little to make me think that this is about to change. In dealing with the forces exerted on adjacent components by a con rod, we tend t... read more
Tags :  con-rods

Coolant system efficiency

Tuesday, July 03, 2012
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As the specific power of engines continues to increase over time, so does the demand on their cooling systems. And if an engine is delivering, say, 200 kW at any one time then roughly an equivalent amount of heat will also be rejected into the coolin... read more
Tags :  coolant-system

Rod thrust face design

Tuesday, July 03, 2012
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In terms of controlling the axial position and axial float (in a direction parallel to the crankshaft axis) of the con rod, there are two main methods of achieving this - crank-guided rods and piston-guided rods. As you may discern from the descripti... read more
Tags :  crankshafts

One sensor, many uses

Tuesday, July 03, 2012
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"So how much information can you get from one sensor" is a question that many will ask at some time or other. A temperature sensor for instance can provide data to the engine ECU to determine the degree of fuelling required. That same information can... read more
Tags :  electronics

Against all odds?

Tuesday, July 03, 2012
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As described in a previous article under this keyword, there are many interesting engines that have their origin in amateur racing series. As mentioned, one of the technically most open motorcycle racing classes is the Supermono, and although this se... read more
Tags :  engine-structure
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