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| 96ghia |
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OK!
Here is an updated utility written for Excel that will calculate how long it will take to pay off an LPG installation, and the cost saving associated with it. The fields that need filling in are blank, so add in whatever is appropriate for your area, (prices, and KM travelled) and it will calc the rest! Enjoy! ****UPDATED 5-7-05. See below
Last edited by 96ghia on Tue Jul 05, 2005 6:33 pm, edited 1 time in total. |
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| mspw |
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Thank you
_________________
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| 96ghia |
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Updated. Now shows how many Km you need to drive until the conversion pays off. Calculated from price of fuels and usage rates
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| Bozz |
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Does the "Savings per litre" need to be in yellow as its not a field that would intentionally be modified...?
Or am I missing something? Otherwise, great work! Now it needs a bit more maths, with a variable interest rate of paying off a home loan at 7.23%pa, how much will be lost to compound interest by spending the extra $2000-ish to install LPG and how long will it take to break even?? 
j/k! |
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| 96ghia |
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Bozz wrote: Does the "Savings per litre" need to be in yellow as its not a field that would intentionally be modified...? No. Saving per litre is worked out when you put in the cost of the LPG and the cost of the petrol. The difference is what you save per litre. Bozz wrote: Now it needs a bit more maths, with a variable interest rate of paying off a home loan at 7.23%pa, how much will be lost to compound interest by spending the extra $2000-ish to install LPG and how long will it take to break even??
j/k! Now thats one I'd like to knopw myself! Next version 
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| twirqurky |
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Very nice spreadsheet
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| jim3964 |
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very good workon the spreadsheet, at least now I have an easy way to convince the missus to change the other car to gas
_________________ 98 AU Falcon Futura I6 ABS & Cruise stock (The Wifes car
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| 96ghia |
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Talk about Thread mining!
I'd almost forgotten all about this! I've not changed the spreadsheet since, but its pretty well sorted out now! |
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| jim3964 |
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_________________ 98 AU Falcon Futura I6 ABS & Cruise stock (The Wifes car
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| uglybob |
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jesus those petrol figures are depressing
 LPG conversion looks a pretty healthy option!
_________________ R.I.P. Scotty |
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| fuzion |
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Think will be doing mels shortly too! most definately worth it as it'll cost under $1k to install!
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| 96ghia |
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How did you manage it for that price??
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| fuzion |
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96ghia wrote: How did you manage it for that price??
lol, few second hand parts and people u know! labour for install is the most! not too hard to do yourself! |
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| 96ghia |
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Well, $1000 as opposed to $2500 plus is makes the equations work out much nicer!
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| fuzion |
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yeah, but for $2500 thts brand new parts and high quality bits and tuning and so on .. its a bit of work involved and the mixer/converter new + tank is most of the cost.
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