A Tad Scatalogical But I Was Wondering... (1 Viewer)

JJ

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... how much my is mpg improved after I have completed my bi monthly black tank emptying chore.

I always think the van goes up hills a bit easier but it might just be psychological.


JJ :cool:
 

TerryL

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How big is your black tank?

Water weighs 1kg per litre (or as near as dammit), have never weighed, ermm, poo! Thus a full 500 litre black tank is going to weigh half a ton - so yes, probably would have an effect on performance up hills..............

My cassette when full weighs enough thankyou, you can keep your black tank! :LOL:
 
Feb 5, 2014
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BUT perhaps you'll get worse performance going down hill? :LOL:

Assuming you start and end at the same height above sea level, PERHAPS it will cancel out? :whistle:

Gordon

PS have you investigated the effects of cleaning the outside of the van? Slightly less weight? Slightly less aerodynamic drag? Do it now and save the planet! :rolleyes:
 

Snowbird

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You have too much time on your hands @JJ, you need a logburner, that should keep you occupied :).
 
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Jim

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You have too much time on your hands @JJ, you need a logburner,

Good idea, Bit messy but if there is only urine in the tank he wont have to empty so often (y)

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Aug 26, 2008
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Having guessed what a black tank might be, the bi-monthly interval seems ... retentive.

More fibre in the diet should be a good start.
 

Sundowners

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I like the idea that you can cook on it, I think it’s so sad burning all that wood on a stove and not being able to boil a kettle/cook on it.
 
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dabhand

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For every extra 50kg you carry in your vehicle, you reduce fuel mileage and fuel economy by roughly 2%. So let’s say the average poo weighs about a half a kg, so if you have a 250 litre black tank that’s full, that’s around 250 kg, this seems an awful lot of poo about 500 poos) theoretically this has reduced your fuel consumption by 10%. If you do 20 to the gallon (miles not poos) this has reduced your mpg to 18.

Now, although maths was never my strong point, after 14 days at say 2 poos per day, that’s about 14 kg without water, so in essence your black tank can’t possibly need emptying twice a month, I can only surmise you must be having far to many poos for this to make any sense at all and I suggest that every time you scratch your ear you pray that it’s wax on the end of your finger!

Anyway I have to go now as I need a poo, you figure it out!:confused::rolleyes:;)(y)
 

DBK

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I assume you are dumping this off your patch given you have been considering drilling a borehole. What goes down comes back up. :)
 
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For every extra 50kg you carry in your vehicle, you reduce fuel mileage and fuel economy by roughly 2%. So let’s say the average poo weighs about a half a kg, so if you have a 250 litre black tank that’s full, that’s around 250 kg, this seems an awful lot of poo about 500 poos) theoretically this has reduced your fuel consumption by 10%. If you do 20 to the gallon (miles not poos) this has reduced your mpg to 18.

Now, although maths was never my strong point, after 14 days at say 2 poos per day, that’s about 14 kg without water, so in essence your black tank can’t possibly need emptying twice a month, I can only surmise you must be having far to many poos for this to make any sense at all and I suggest that every time you scratch your ear you pray that it’s wax on the end of your finger!

Anyway I have to go now as I need a poo, you figure it out!:confused::rolleyes:;)(y)
Simon, I have heard it mentioned that JJ is full of $hit ;)
 

Nicepix

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For every extra 50kg you carry in your vehicle, you reduce fuel mileage and fuel economy by roughly 2%. So let’s say the average poo weighs about a half a kg, so if you have a 250 litre black tank that’s full, that’s around 250 kg, this seems an awful lot of poo about 500 poos) theoretically this has reduced your fuel consumption by 10%. If you do 20 to the gallon (miles not poos) this has reduced your mpg to 18.

Now, although maths was never my strong point, after 14 days at say 2 poos per day, that’s about 14 kg without water, so in essence your black tank can’t possibly need emptying twice a month, I can only surmise you must be having far to many poos for this to make any sense at all and I suggest that every time you scratch your ear you pray that it’s wax on the end of your finger!

I don't think fuel consumption is a major issue for JJ It appears that our self-styled ruffty-tuffty, full-time motorhomer is actually a sedentary shed-dweller ;)

Anyway I have to go now as I need a poo, you figure it out!:confused::rolleyes:;)(y)

I'm still working out how he manages only to put number twos in the tank without including any number ones. And how you would manage to empty such a solid load through a pipe :confused:

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dabhand

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I don't think fuel consumption is a major issue for JJ It appears that our self-styled ruffty-tuffty, full-time motorhomer is actually a sedentary shed-dweller ;)



I'm still working out how he manages only to put number twos in the tank without including any number ones. And how you would manage to empty such a solid load through a pipe :confused:
That’s the secret of motorhoming dear boy:rolleyes:

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