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Alex · July 9th, 2009, 03:11 PM

Sam - the issue is that people's tachs are already variable; it's not a very precise instrument. Exactly 50 mph will not be exactly 6000 rpm on everyone else's tach. On some it will show 6500, some it will show 5500, and neither one of those necessarily has the CDI issue. In addition to tach & speedo display variability, the rolling circumference of the rear tire matters as well, so anyone with either a brand new tire or worn tire, or even a completely different sized tire will show a difference of engine rpm --> speed conversion, with or without the CDI issue.

July 9th, 2009, 03:11 PM	#161
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	Sam - the issue is that people's tachs are already variable; it's not a very precise instrument. Exactly 50 mph will not be exactly 6000 rpm on everyone else's tach. On some it will show 6500, some it will show 5500, and neither one of those necessarily has the CDI issue. In addition to tach & speedo display variability, the rolling circumference of the rear tire matters as well, so anyone with either a brand new tire or worn tire, or even a completely different sized tire will show a difference of engine rpm --> speed conversion, with or without the CDI issue. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)