High-G FJR Junkie!
Join Date: Mar 2015
Location: Rolling Prairie, Ind
Quite simply it is manufacturing tolerances, US national calibration standards (NIST) for instrumentation requires the instruments used for calibration have to be less than 1% error of full scale, normal use instrumentation can vary from 5-10% of full scale (what’s the max capable reading for a fjr speedo?) so a 1000psi pressure gauge could be up to 100psi off, it’s just manufacturing tolerances, now most are considerably more accurate than the allowable tolerances and our law makers want those inaccuracies set so you think you’re going faster than you really are. Digital instruments make it easier to do this.
When I called and asked Garmin about what kind of inaccuracy is in their speed readout of their gps all I got was the legal jumbo-jumbo non-answer. It has some error in it but they won’t admit to any. All instruments have inherent inaccuracy at some point, add in the metric conversion factoring and it becomes very easy to understand why our canadien cousins think their bikes are faster,,,,, particularly the candy cow pie one’s .
Anyway there is no absolute accuracy in any instruments, particularly a production instrument like a speedo, and when you realize that a calibration instrument has up to the 1% of full scale error in becomes easy to understand how they can be off.
Red 2014A, the fastest color !
Ride more,, worry less !
Last edited by passx; 08-13-2019 at 09:01 AM.