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More on dampers

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In the previous couple of RET-Monitor articles under this keyword, we have looked at ways to control torsional vibrations in crankshafts. It would be possible to expand on this almost indefinitely, as there is a huge number of devices that have been used with success in engines in the past. Many of them are very complex and lend themselves to use on very large engines rather than the much smaller race engines we are used to working with, simply because the components can be made at a...

Gearshift load cells

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The world of race transmissions has changed substantially over the past 20 years or so. Although the geartrain cluster may fundamentally be the same, with only relatively small improvements to the gear teeth profile or material, the main developments would seem to be mostly around the gear change itself and the speed of gear change. And while developments to the gear cluster saves weight or improves reliability, those to the speed of gear change save time – arguably a far more...


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In the context of this article, ICE has nothing to do with frozen water, but rather everything to do with Formula One engines from this season onwards. With the current Formula One power units we need to distinguish between the several systems these units consist of, and one of them is the ICE – the Internal Combustion Engine. I am not involved in 2014 Formula One ICE engineering but in this article I will try to make an educated guess about the differences between the 2014 and...

MotoGP exhausts

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MotoGP exhausts   I loved two-stroke Grand Prix motorcycle racing, especially the top 500 cc class. The bikes were light and difficult to ride, and I never had any illusions that I would be able to tame one of them. The four-stroke class has brought us machines with an incredible amount of power, and engines that are more closely related to those in their road-going cousins. As such, the bike manufacturers turned away from two-strokes largely because of emissions. The four-stroke...

Using springs

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When considering a bolted joint, and when explaining how it works under load to a novice engineer, it is often helpful to consider the components as springs. The joint and the bolt ‘share’ any imposed loads depending on coefficients that are functions of the components’ stiffness, as is the case with nested helical springs. It does not take a huge leap of imagination to look at the actual applications of helical springs as fasteners. There are applications where the imposed...