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SoobieOut · 02-22-2011, 08:49 PM

Millions of dollars were spent developing the double nickle (55 MPH) signs in the seventies.

From what I have read it is the magic number for FE. I am sure there are different gear ratios to place the number a bit higher or lower.

02-22-2011, 08:49 PM	#21 (permalink)
SoobieOut Polymorphic Modder Join Date: Aug 2010 Location: Utah Posts: 307 2006 DaCivic Hybrid - '06 Honda Civic Hybrid 90 day: 45.16 mpg (US) Thanks: 188 Thanked 40 Times in 25 Posts	Millions of dollars were spent developing the double nickle (55 MPH) signs in the seventies. From what I have read it is the magic number for FE. I am sure there are different gear ratios to place the number a bit higher or lower.