05-07-2016, 07:46 PM
and the twin engines doesn't flex and torsion the cranckshaft? All mechanic elements get elastic deformations continuously. It's matter of design, a twin engine will have its cranckshaft supported with bearing at the ends (1 support at each end and both connection rods pushing in the middle) and the CB has the supports at each end of the cranckshaft and four more intermediate supports for the cranckshaft, so each connection rods pushes the cranckshaft between two supports, so I think it's easier to deal with the flexion in a 4 in line. That's for the flexion, and for the torsion is a matter of the engine torque and the design of the crankshaft (diameter, length, shape, etc). In my opinion this article you read doesn't make much sense, I am not an expert in engine design but... and all the reliable cars that are using a 4 in line?