Quote:
Originally Posted by geomartin
I had spoke with Bob Gillespie after your post. I don't understand how a car scale that has been certified for +/- 1Pound can give show a 0.21 Lb accuracy? Were you running the scale if so then we meet since I drove the car and saw it being weighed. I saw the weight of the car before annd after the event 1972Lbs (before event) and 1966Lbs (after event) sooooo the Lbs of fuel=6Lbs not 6.21Lbs
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No, I didn't run or study the scales at WGI. I'm just one of the many attendees who appreciates the distinction between resolution and accuracy and enjoys Metrology.
My math is as follows:
90.65mi/106.6mpg = 0.850 gallons burned. Multiply by the density of your fuel to get the change in weight.
I was using the density of "any type of diesel fuel" in the WolframAlpha database to convert to lbs, but here it is with #2 Diesel instead:
density of diesel fuel * (90.65mi/106.6mi/gal) - Wolfram|Alpha
So, 6.03lbs, which is within a reasonable rounding error of 6lbs.
And yes, we did meet, because I think your car is interesting.