11-10-12, 08:07 PM
On a normal inline 4 two pistons rise and fall at the same time, so effectively it's two parallel twins strapped together. Two pistons are at the top of the stroke at a time and the crank has each journal at 180 degrees to each other.
A crossplane inline 4 (or a Ferrari V8 like the 458) has each crank journal at 90 degrees, so only one piston is at the top of the stroke at a time. Best to see it working
http://bikerholic.com/2009/02/13/video-2...explained/
A crossplane inline 4 (or a Ferrari V8 like the 458) has each crank journal at 90 degrees, so only one piston is at the top of the stroke at a time. Best to see it working
http://bikerholic.com/2009/02/13/video-2...explained/