Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Two Cylinders better than 3/4 ? (discussion of Fiat Twin Air 900cc 2-cyl engine)

Frank Lee · 10-26-2010, 02:31 PM

The straight twins I'm familiar with incl. CB450 have pistons going up n down in unison whilst firing non simultaneously. This is how you get even firing pulses; if they fired together what would be the point? Make a big single then.

10-26-2010, 02:31 PM	#33 (permalink)
Frank Lee (: Join Date: Jan 2008 Location: up north Posts: 12,762 Blue - '93 Ford Tempo Last 3: 27.29 mpg (US) F150 - '94 Ford F150 XLT 4x4 90 day: 18.5 mpg (US) Sport Coupe - '92 Ford Tempo GL Last 3: 69.62 mpg (US) ShWing! - '82 honda gold wing Interstate 90 day: 33.65 mpg (US) Moon Unit - '98 Mercury Sable LX Wagon 90 day: 21.24 mpg (US) Thanks: 1,585 Thanked 3,555 Times in 2,218 Posts	The straight twins I'm familiar with incl. CB450 have pistons going up n down in unison whilst firing non simultaneously. This is how you get even firing pulses; if they fired together what would be the point? Make a big single then. __________________