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I've been wanting to make a video about the stroke x diameter of an engine for a while now and how the stroke of a piston can completely change the behavior of an engine! Have you ever wondered why a Harley Davidson 883cc has around 56 horsepower while a Z650 can get around 65 horsepower with 650cc even though they have 2 cylinders? And the Meteor 350 with 20hp while a CB300 easily reaches 26 horsepower? But the most interesting thing is to know that a 1000cc motorcycle like a CB1000R or a Z1000 with 4 cylinders can have power ranging from 100 to 180 horsepower and a 1000cc car also with 4 cylinders like a Uno Mille or a Gol has power between 50 and 70 horsepower at most! In this video I talk a little about torque and power and a lot about stroke and diameter. I also used a simulator to illustrate this in practice. (MotorSim 2 for Android) I highly recommend it! Support the channel with a donation of any amount, key: [email protected] Promotional videos from Kawasaki and Ford were used, without harming the company, but rather helping it with advertising, indirectly. The videos were used under the fair use policy. Music credits: Music by Karl Casey Music by White Bat Audio Music Drive by @whitebataudio