More on grinding and polishing

Tuesday, August 20, 2013
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In the previous article, the subject of crankshaft grinding was discussed. In addition to the perils of grinding incorrectly in terms of ‘grinding cracks’, there is evidence to suggest that the direction of travel of the workpiece relativ... read more
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Grinding and polishing

Thursday, July 04, 2013
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Crankshafts are very precise pieces of equipment, and are machined accurately for a number of reasons. For racing, we need to get as close to the maximum allowed capacity without exceeding it, so the throw of the crankshaft is tightly controlled. How... read more
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Roller bearing crankshafts

Thursday, May 16, 2013
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The 1960s must have been a fantastic time to be around race engines. The incredible diversity of engines in a single class is one reason I’m drawn to events where racing motorcycles from this era are wheeled out, started and ridden as they shou... read more
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Flexibility and friction

Friday, April 05, 2013
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Anyone involved in the development of a race engine understands the basics of performance improvement. We want to trap as much air as possible in the combustion chamber, mix with it the amount of fuel that will reliably give best power, burn it as ef... read more
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Fillets

Thursday, February 21, 2013
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In reply to a previous article that discussed crankshaft fillets and their importance in terms of crankshaft reliability, a reader left a comment saying most crankshaft fillets are not true radii, but are in the form of an ellipse or other conic sect... read more
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Counterweight Knife Edging

Thursday, January 03, 2013
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Crankshaft counterweights are required on certain engine configurations to allow the engine to run without excessive rocking couples; cruciform V8 crankshafts are an example of this. Other engine configurations can run happily without counterweightin... read more
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New crankshaft steels

Thursday, November 08, 2012
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Although there are a great many race engines that carry over the stock crankshaft from the production engine on which the competition unit is based, many will choose to replace the production crankshaft with something more accurate and better enginee... read more
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Manufacturing

Monday, August 13, 2012
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While there are reciprocating engines that don't have a crankshaft, these are rare and have generally done little to convince people that we ought to abandon it. The crankshaft, with its eccentric crankpins, is not a straightforward part to make. Evi... read more
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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
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