Re: speedometer question

Posted by sgtslag on Mar 15, 2012; 4:46pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/speedometer-question-tp3679551p3829332.html

I had similar results with my '79.  I went through it, lubing everything I could -- speedo needle jumping got worse after lubricating the cable (I did, however, use wheel bearing grease on the cable length, not a liquid lubricant, as specified by the book -- discovered my mistake long after I did it, didn't feel like taking it off and re-doing it).  My speedo is over by 9 MPH at 55 (which is actually only 46 MPH...  80 on the clock, is an actual speed of roughly 69-70 MPH) -- this did not change after my mis-lube job.  On my Voyager, there is a plastic gear in the wheel:  if it loses a tooth (common failure...), the speedo will be off by 5-9 MPH.  Could be a similar issue on the Honda's.

I checked into having my speedo repaired, but the company I found (which claimed in their ad to be capable of fixing 'any' speedo...) told me it was too old, no parts.  Use a GPS to gauge your speedo's margin of error:  check speed on the GPS, and the speedo, to find out what you need to aim for, at common speeds, such as in-town, and highway.  Your speedo will be off by a percentage, not a fixed number of KPH's, so as you climb in speed, the KPH difference will increase, between clock, and actual (GPS).  Be careful while doing this, as you will need to take your eyes off the road to read the gauges...  Cheers!