Seeing this old thread come to the surface gave me a thought.
Have you considered the following:
Buy a ScanGaugeII from www.scangauge.com - they feature a speed readout and the readout can have a correction applied. My ScanGauge is fitted to the top of my steering column so it's easy to see (although I don't use it for speed as I have original rolling diameters).
Just work out the error and apply it when you read the speedo. If you work out that true 80km/h is 76 indicated, and true 100km/h is 95 indicated then just apply this 5% error to what you see. You could even make a small cheat sheet and laminate it and put it under your sun visor. That's what we do for compasses and airspeed indicators in aircraft I fly.
BTW, ditto on Matt's posts. WTF is going on there Matt?
Cheers,
Drew.
Have you considered the following:
Buy a ScanGaugeII from www.scangauge.com - they feature a speed readout and the readout can have a correction applied. My ScanGauge is fitted to the top of my steering column so it's easy to see (although I don't use it for speed as I have original rolling diameters).
Just work out the error and apply it when you read the speedo. If you work out that true 80km/h is 76 indicated, and true 100km/h is 95 indicated then just apply this 5% error to what you see. You could even make a small cheat sheet and laminate it and put it under your sun visor. That's what we do for compasses and airspeed indicators in aircraft I fly.
BTW, ditto on Matt's posts. WTF is going on there Matt?
Cheers,
Drew.
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