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Old 06-22-2012, 06:40 PM   #1
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Cost to Haul 1 Pound 1 Mile - Quiz?

I'm a Pipe fitter not a mathematician. This is an exercise not based on hard numbers.


Truck solo - 20 mpg at $4 gal = 20 cents a mile?


Towing - 10 mpg at $4 gal = 40 cents per mile?


I haul 6000 lbs and get 10 mpg. It costs 20 cents per mile in addition to the base cost to haul 6000 pounds?


How much does it cost per pound to travel 1 mile?


I'm curious because I would like to fill my 30 gallon fresh water tank at home and drive to East Lake. The lake is about 240 miles away.


How much will it cost to haul water from home rather than lugging it around the CG 5 gallons at a time?
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Old 06-22-2012, 06:57 PM   #2
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It's a good question and I'll be interested in the responses because I don't believe the weight/cost curve will be linear. Thirty gallons of water weighs something like 240 lbs. I'm doubting that any mpg difference would be noticeable with your base of three ton.

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Old 06-22-2012, 07:12 PM   #3
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"I don't believe the weight/cost curve will be linear"

True.
I can't travel with less than 5300 lbs as that is the dry weight of the TT and I can't travel with more than 7000 lbs because, well, I just can't.

I am curious to know if I can haul water from home for say, $1.85 or lug it at the CG.
I will gladly pay for fuel to save the time and work.
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Old 06-22-2012, 08:13 PM   #4
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My opinion is that having fresh water on tap is "priceless " , so fill your water tank at home , enjoy your camping and don't worry about it !
That's what we do .
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Old 06-22-2012, 08:36 PM   #5
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My opinion is that having fresh water on tap is "priceless " , so fill your water tank at home , enjoy your camping and don't worry about it !
That's what we do .
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Old 06-22-2012, 08:59 PM   #6
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The additional fuel cost to carry the water will be negligible. The reason most people don't carry a full freshwater tank is to save weight due to gross weight limitations or such. If this isn't a concern to you then haul away.
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Old 06-22-2012, 09:09 PM   #7
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Just for fun, have you considered the additional cost of the water from home? What you get at the campground is basically free, while what you get from home is metered, perhaps.

Just my opinion, but I suspect the cost of hauling it from home is nothing compared to the peace of mind from having your "own" water.

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Old 06-22-2012, 09:19 PM   #8
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What you get at the campground is basically free

GL Arnold
Good one...
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Old 06-22-2012, 09:34 PM   #9
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I doubt there is a measurable difference in fuel economy hauling a full tank as opposed to hauling it empty. I'll be interested to see if I'm wrong.

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Old 06-22-2012, 09:50 PM   #10
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I ran CPM sheets on all my trucks when I hauled to make a living.
Add 240 lbs to a big block or a new gen diesel and on average fuel usage rates stays the same.

However (example) add 240 lbs to a 4.x smallblock with a 3.42 axle with a four speed tranny and more fuel will be used on average.

Actual CPM figures need to be a average over several tanks and not a one tank trip.
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Old 06-22-2012, 10:00 PM   #11
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How much does it cost per pound to travel 1 mile?

My right foot will make or break a budget. Weight is not a concern.
I gave the numbers. My friend on another site said 0.00003333 cents per pound per mile.

Just wondering if anyone has some mathematical curiosity.
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Old 06-22-2012, 10:05 PM   #12
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If you are that worried about the weight of a few gallons of liquid leave both the water and fuel tanks empty when you go.
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Old 06-22-2012, 10:06 PM   #13
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I use to stress over every pound, but I have found that wind and my foot are my biggest enemies. I definitely agree with some of the other posts that having water is priceless. I have never noticed a difference in my fuel economy with my water tank full versus empty. With it full you can use your own toilet should you need it, wash your hands when needed and most importantly have water should you get stranded on the side of the road. I think this is how the math would work out; 10mpg @ $4.00 a gallon= $0.40 a mile, $0.40 a mile / 13,000lbs GCVW = $0.00003077 per pound per mile. If this was a linear scale which it is not then it would cost you approximately $0.00738462 per mile to haul 240lbs of water. My last trip was 1400 miles, so for example it would have cost me an additional $10.34 to have a have a full water tank.
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Old 06-22-2012, 10:14 PM   #14
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Quote:
Originally Posted by IWillRVToo View Post
How much does it cost per pound to travel 1 mile?

My right foot will make or break a budget. Weight is not a concern.
I gave the numbers. My friend on another site said 0.00003333 cents per pound per mile.

Just wondering if anyone has some mathematical curiosity.
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