Follower friction

Friday, May 11, 2012
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In these days of soaring fuel prices the top priority for any engine manufacturer is the responsible use of scarce resources. Specific fuel consumption or the amount of fuel used per unit power output per hour is the measure of the task, and a major ... read more
Tags :  camshafts

What makes a good cam?

Thursday, March 29, 2012
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As a car/engine buff first and an engineer second, I'm always interested in the views (however misguided) of my fellow enthusiasts. So when it comes to the question of what makes a good camshaft, their thoughts can be revealing. To one individual, a... read more
Tags :  camshafts

Impulsive behaviour

Thursday, February 09, 2012
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The Oxford English Dictionary rather politely defines a jerk as "a contemptibly foolish person", and in reality this is probably the definition that most non-engineers would give. However, and to its credit, a more formal definition and one which is ... read more
Tags :  camshafts

Camshaft care

Thursday, December 15, 2011
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It is sometimes easy to forget that after all the efforts a cam manufacturer makes in producing his products, the greatest cause of failure is not in the installation or its timing but in the first few seconds and minutes of its active life. It's a ... read more
Tags :  camshafts

Desmodromic or demonic?

Thursday, November 10, 2011
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I don't know about you but when I was young, my written command of the English language was, shall we say, a bit lacking. "Needs to pay more attention to his spelling," was the end-of-year comment by one of my English teachers. But despite my best ef... read more
Tags :  camshafts

All in a spin

Thursday, September 22, 2011
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To be a good engineer, I have always maintained, in addition to an inquisitive mind and a grasp of the technology, you also need to be a student of history, for on many occasions the practices of the past give an insight into the possible problems of... read more
Tags :  camshafts

Timing is the key

Thursday, August 11, 2011
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The design of valve lift profiles can no longer be described as the sole province of the specialist engineer. Today we have many excellent software packages that will do just that without having to go anywhere near a polynominal equation or even thin... read more
Tags :  camshafts

Ramping up

Monday, July 04, 2011
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As an engineer first, a motorsport enthusiast second and historian third, I welcome the recent upsurge in historic rallying. But whereas most journalists or writers would perhaps reflect on the sheer thrill of hearing the sound of a BDA reverberating... read more
Tags :  camshafts

Three into two will go

Thursday, May 12, 2011
Comments (2)

High lifts or long durations are common features in high-performance camshafts, and when optimised can produce high engine torques over a useful but often limited range of engine speeds. The introduction of variable valve timing can widen this range ... read more
Tags :  camshafts

Tight times!

Thursday, March 31, 2011
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The most common aspiration of just about all power unit engineers is that of greater engine performance. Better fuel economy, improved toxic emissions or simply better torque over a wider range of operating speeds - much of it but certainly not all -... read more
Tags :  camshafts
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