R25's full fuel tank weight

[baz]

I was curious to know what the weight of full tank of diesel fuel in my R-25 (75 gal tank) would be. I computed it as follows...

-Average weight of diesel (from 22 sources) was given as 0.875 grams per cubic centimeter.
-There are 3785 cubic centimeters in one US gallon.
-1 gram is 0.002205 lbs

Thus 3,312 grams equals 1 US gallon of diesel or (3785 * 0.875)

Therefore 1 US gallon diesel weighs approximately 7.3 lbs or (3312 * 0.002205)

...and finally R25's full fuel tank (capacity at 75 gallons) yields a weight of approximately 550 lbs.

Care to check my assumptions and arithmetic ?

Is this full tank weight given anywhere in the R25 Operations Manual I wonder ?

 

[Nellie Too]

Hi Barry,
A simple idea for you. Take an empty fuel tank, weigh it, add a gallon of diesel and weigh it again. I think a gallon weighs about eight pounds. I may be a whole lot off but five gallons seems to be about forty pounds, eighty if you have to carry it a long ways.
My best to you guys
Bob

 

[Bruce Moore]

According to this calculator, 547.5 lbs. - which agrees with your findings.

 

[baz]

Two great sanity checks -- thank you. 🙂

 

[Stella Maris]

You guys are insane!!!!!! Thats what makes this group great!!!!