Join Date: Sep 2018
Location: Vancouver Island, BC Canada
Mentioned: 0 Post(s)
Need some help from other -X 300 owners...
I had installed the 15T front sprocket @ 1st service, and I've always been puzzled about speedo and odo accuracy since then. I finally tested with a GPS and speedo is still optimistic. @ 7,000 RPM speedo reads 100kmh (62mph) and GPS reads 96kmh (~60 MPH) ...GPS reads slightly lower for pretty much any speed.
My conundrum comes from gearingcommander.com which states, with 15T front gearing, @ 7,000 speed should be 104kmh (~65mph). With stock gearing speed @ 7,000 should be 97.1kmh (~60mph)
I watched Anthony Compton's youtube clip showing his bike running @ 7,000 and his speedo reading ~60mph and I assume gearing is stock - he doesn't say otherwise.
So I'm wondering if the bike shop accidentally installed the wrong sprocket...I did get back the original 14T in the package that new sprocket came in - and the part number refers to a 15T PowerDrive sprocket. I like to think that gearingcommander is accurate.
So before I remove the countershaft sprocket cover and count the teeth, my question is, what is your accurate speed @ 7,000? And are you running 14T or 15T front sprocket?
Thanks in advance...this is driving me nuts.