High-strength steel rod unveiled

Wednesday, February 16, 2011
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At the recent Autosport Show in England there was a lot to interest the motorsports enthusiast, but during the two trade days preceding the public show days, there is a simultaneous show, Autosport Engineering, where the latest developments in motors... read more
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Location of con rod caps, part 2

Thursday, December 16, 2010
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In the previous article on the subject of maintaining the accurate locations of the two parts of a split con rod design, we looked at dowel pins and ring dowels, and the relative merits of the two methods. The subject of joint shear stiffness was ra... read more
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Location of connecting rod caps, part 1

Wednesday, November 10, 2010
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In an article published in 2009, I looked at some of the design features of the joint face of a split con rod. One important requirement is that the two parts of the con rod - the 'blade' of the rod and its cap - must be positively and reliably locat... read more
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Vibrations

Tuesday, September 28, 2010
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Any technical discussion about engine vibration generally revolves around one of two areas, namely the cranktrain and the valvetrain. In terms of the crankshaft, torsional vibrations - or rather their avoidance or mitigation - are a major concern. I... read more
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Metal-matrix composite rods

Tuesday, August 17, 2010
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In my previous article on the subject of con rods I asked, "Can we manage without big-end bearings?" and went on to look at the various attempts to do this and the possible future options. The article briefly mentioned the benefits of not having a be... read more
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Can we manage without big-end bearings?

Friday, July 02, 2010
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The big-end bearing shells that we find in almost all four-stroke racing engines are an item made with great precision. They are generally 'graded' and as such are available in thickness grades which have a range of only a few microns. Moreover, thei... read more
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Small end lubrication (2)

Thursday, May 13, 2010
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In last month's article on connecting rods, I looked at a common way of providing lubrication to the small end of the connecting rod - drilling (or multiple drillings) into the small end of the rod. In many cases this is enough to supply lubrication ... read more
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Small end lubrication

Tuesday, March 30, 2010
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The lubrication of the big end of the con rod is generally looked after very well, especially in the four-stroke racing engine as it is normally positively lubricated, i.e. continuously fed by high pressure oil issuing from the oil holes thoughtfully... read more
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Smaller and lighter is always better

Tuesday, February 16, 2010
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In the case that you don't have this article delivered to your inbox, I hope that the title has drawn you here either in the hope that you will find how to make your con rods smaller and lighter (in which case you may be disappointed) or because you ... read more
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Con Rods: Application of Shot-peening

Thursday, January 21, 2010
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In a number of previous articles, I have touched on the subject of residual compressive stress, and how this can be helpful to us in increasing the fatigue strength and hence life of components. This allows them to be smaller and lighter than would o... read more
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