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rick-l rick-l is offline
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Join Date: May 2002
Location: St Louis
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Re: If my speedo is 10% off is my odo also 10% off?

Quote:
Originally posted by alf
I have about a 10% variance on my speedo (faster than actual), curious if my odo is also off by that amount.

alf
If x is the distance traveled the indicator on your dash tells you (outputs) x (odometer) and dx/dt (speedometer). The input is x in the form of pulses (or rotation) from the transmission.

I would suspect that since x is easily calculated and recorded there would be no adjustment to the odometer. Computing the derivative however is not so straightforward. I would suspect this (SPEEDO) could have a calibration adjustment.

If the input is wrong both outputs will be afffected but the speedometer could be calibrated correctly. Likewise if the odometer was correct the speedometer could be calibrated incorrectly
Old 09-30-2005, 07:58 AM
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