Quote:
Originally Posted by DGthe3
I didn't know that anyone had made a 7 cylinder engine. Typically they like to be able to divide 720 by the number of cylinders and get a whole number out of it. this is how far apart the cylinders need to fire in the cycle. 720/7=102.85714. . .
For 1,2,3,4,5,6,8,9,10,12,16,18,20,24 everything works out cleanly.
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7 cylinders are typically radial engines.
Saab made an inline 7 cylinder but it was a military application.
I don't think Honda's V-7 (4 cyls in front, 3 in back, 90° V) ever made it past prototype. I don't remember why. I would imagine that quelling the primary imbalance ate up more horsepower than having an extra cylinder created.
