Re: [DML] Speedomter Calibration
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Re: [DML] Speedomter Calibration



Hi Bernie

Even though it might seem like one, those are actually two separate issues 
you're talking about. Speedometer and odometer use different methods of 
driving the mechanism. You do NOT need to do anything with your speedo or 
odo. Besides, recalibrating the odometer involves changing parts and major 
modification. There is no easy way of doing it.

> Does anyone know how to calibrate the speedo in a DeLorean?  I took my
> car to work today and filled up at the gas station right across the
> street, the mileage shown on the odometer is about 5 miles shy of the
> 44 miles I drive home.
Are you sure it's exactly 44 miles? The only way to know for sure would be 
to use a GPS. If you are going by odometer from another car then that car 
might be inaccurate. Besides, odometers are never perfect. Mine shows 102.4 
miles for every 100 miles driven (checked with GPS)

> Also there is a radar sign that tells what
> speed you are going that I drive by everyday, it was saying I was going
> 36 and the speedo was registering close to 40.  Don't ask what the
> speed limit is ;)
A speedometer that is within 10% of actual speed is considered VERY 
accurate! And guess what... 99% of speedometers will actually show 10% more 
than your actual speed.

The thing that can affect the reading would be different tires than those 
used originally at the factory. Even if the size is correct. Tires from 
different manufacturers differ in size. That will affect the speed as well 
as odometer reading. The smaller the tire the higher the reading will be. In 
your case where the odo is lower than you expected and speedo is higher I 
would say that it's perfectly fine. The speedo is perfect and odo in your 
OTHER car is probably going faster than it should.

I hope this helps

Tom Niemczewski
vin 6149 (in Poland!)
tomciodmc@xxxxxxxxxxxxxx
www.deloreana.com <- home of the convex mirrors - available now



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