MIND BOGGLING ENGINE GEOMETRY Rod Ratio Explained

Here we have two engines. Both have the same bore and the same stroke. As you can see the only difference is the length of their connecting rods. At the same engine speed so at the same speed of rotation, the same rpm. Which engine has a faster accelerating piston As you can see the question I asked you was a trick question because the piston in the short rod engine accelerates faster from top dead center going down while the long rod piston accelerates faster from bottom dead center going up. So why does this happen if both engines have the same bore, same stroke and are obviously spinning at the same rpm. Well the culprit behind is obvious. It s the connecting rods, as they re the only thing different between the two engines. And this video I promise to strain your mind to the redline by explaining how something as simple as different connecting rod lengths create different piston acceleration and then using real life engine examples we will see how this impacts everything from power and tor