I am wondering... with Dorkvader bringing more than his weight in keyboards to the meetup, how much are the fuel costs for 10 hours worth of return journey driving with 150lbs of boards on board?
Some geek wants to calculate this for fun?
It's not significant relative to the weight of the car..
You guys are no fun.
My car is rated for 35 MPG highway and I usually get 32-36 depending on how fast I drive. Curb weight is listed at 2800 Lb, Ming removed at least 400 Lb of material from the car making it at most 2400 Lb. If I add back that 400 Lb as me (130 Lbs) plus keyboards (260 Lbs), the percent difference in weight is (2400-2800)/(2400) = 17%, which is quite a bit actually. I suspect I might be carrying more than 260 Lbs of keyboards, but it'll depend a lot on what I bring.
Now, fuel economy is based most on speed and RPM, but we can assume that'll be the same if I have keyboards (or a passsenger) or not. After that, fuel economy is based exponentially on wind resistance, but we are also assuming my driving habits and the amount of trucks I drive behind will be the same. Finally, the third factor it's based on is weight (which affects resistance) and I believe it scales linearly.
So we can guess that I'll use as much as 15% more fuel on the way.
Now the whole trip is 600 miles, so unladen I expect to use 17 gallons of fuel, and laden I expect to use 19-20 gallons. The price difference would be about $7, which I think is probably worth it.
I just thought of something: I don't have any canadian currency handy. If someone wants to buy gas for me in canada I will be happy to pay them back via payapl.