Calculating The Fuel Needed For A Trip
Here's an instance of how I calculate the amount of fuel needed for a given trip. You should live able to create something along these lines as well as come upwards up amongst a release that volition locomote for you.
First, I write downwards when as well as how much I'm going to boil throughout each day. For example, await at the nautical chart below. I typically boil ii cups (about 500 ml) of H2O per repast for breakfast as well as supper. Maybe I'll boil a piddling less for breakfast. I typically direct keep a mutual frigidity lunch. I every bit good similar to direct keep a loving cup of java or tea inwards the morning, as well as and then a loving cup of cocoa or tea inwards the evening, which agency I'll boil some other ii cups per twenty-four hr menstruation for hot drinks. I typically role mutual frigidity H2O for cleaning upwards later supper, therefore no fuel consumption there.
Given all of the above, I'm going to boil almost 1500 ml per day. OBVIOUSLY this is but an example, as well as I'm making everything uniform therefore it's slow to understand. In existent life, the amount yous boil may vary from twenty-four hr menstruation to twenty-four hr menstruation depending on your menu, how much yous eat, whether or non yous role hot H2O for personal hygiene or dishwashing, etc. This instance is all almost circular numbers as well as slow to follow calculations. The numbers are reasonable, but of course of written report yous ask to adapt everything to how yous cook, how oftentimes yous cook, how many people yous gear upwards for, etc.
Second, I write downwards how much fuel it's going to direct keep to boil each amount of H2O I've written downwards inwards pace 1. For most stoves, that's almost vii or 8 g per 500 ml boil although yous tin sack larn past times amongst less if yous follow the rules of stove fuel efficiency.
NOTE: If yous role a Jetboil or other similar integrated canister stove or yous role a oestrus exchanger pot, as well as then instead of vii to 8 g beingness the typical amount of fuel needed to boil 2 cups of water, yous mightiness innovation on 5 to half dozen g of fuel per boil.
Yes, you'll direct keep to adapt these numbers. Again, this is but 1 example, using the "backpacker's standard" of 2 cups per boil, which is almost what most freeze dried meals require. As yous adapt these numbers, cry back that it's to a greater extent than efficient per loving cup to boil a larger quantity than a smaller. In other words, if 2 cups requires, say, 8 g (4 g per cup), iii cups mightiness entirely require 10.5 g (3.5 g per cup), as well as 1 loving cup mightiness require 4.5 g. Something similar that. You ask to adapt all these numbers based on your experience of how much fuel yous truly use. For this example, I'm going to select a release of 8 g per 500 ml boiled which is neither overly generous nor overly optimistic.
Third, I full upwards the amount of fuel that I'll ask for the whole trip past times summing the amount needed for each day. Many people create non gear upwards breakfast on the kickoff twenty-four hr menstruation or supper on the last; inwards that instance yous would ask to adapt these calculations. This full amount needed has to live less than the amount contained inwards whatever canister I intend to bring. You should every bit good add together a "margin for error," specially on mutual frigidity weather condition trips. The to a greater extent than experience yous have, the smaller margin yous tin sack innovation on.
Given the instance presented inwards the chart, below, I ask about 96 g of fuel for a 4 twenty-four hr menstruation trip or almost 24 g per day. Yes, I know nosotros mightiness larn amend actual results than 8 g per 500 ml boiled which would laissez passer me dissimilar numbers, but let's but become amongst 8 g per 500 ml boiled for this example. If I ask 96 g of fuel, as well as I direct keep a 110 g canister of gas, I would direct keep xiv g every bit a margin for error. You'd direct keep to think almost whether or non that's going to locomote for you. If the weather's warmer, as well as then mayhap that's fine. If it's colder, mayhap innovation on more. If you're amongst a group, mayhap that's fine. If you're going solo, mayhap innovation on more. And therefore on. Think it through as well as direct the the amount yous experience comfortable with.
While these numbers inwards the below nautical chart aren't actual information from a trip, they're inside the realm of reason. Therefore, allocating 25 g of fuel per twenty-four hr menstruation isn't unreasonable until yous larn a amend feel of how much your cooking truly requires. Twenty 5 is a fairly slow release to locomote with, as well as the most usually used canisters incorporate almost 100, 200, as well as 450 grams of fuel. Twenty 5 divides easily into 100, 200, as well as 450.
NOTE: For your kickoff several trips, if you're novel to backpacking, assume you'll ask to a greater extent than fuel rather than less until yous larn a experience for how much fuel your manner of cooking truly requires.
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| Planning for a trip inwards the dorsum country? Sounds fantastic. Um, how much fuel are yous going to ask for that? |
Given all of the above, I'm going to boil almost 1500 ml per day. OBVIOUSLY this is but an example, as well as I'm making everything uniform therefore it's slow to understand. In existent life, the amount yous boil may vary from twenty-four hr menstruation to twenty-four hr menstruation depending on your menu, how much yous eat, whether or non yous role hot H2O for personal hygiene or dishwashing, etc. This instance is all almost circular numbers as well as slow to follow calculations. The numbers are reasonable, but of course of written report yous ask to adapt everything to how yous cook, how oftentimes yous cook, how many people yous gear upwards for, etc.
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| Wow. Looks similar a beautiful spot. How many days volition it direct keep yous to larn there, how many meals volition yous consume on the way, as well as how much fuel create yous need? |
NOTE: If yous role a Jetboil or other similar integrated canister stove or yous role a oestrus exchanger pot, as well as then instead of vii to 8 g beingness the typical amount of fuel needed to boil 2 cups of water, yous mightiness innovation on 5 to half dozen g of fuel per boil.
Yes, you'll direct keep to adapt these numbers. Again, this is but 1 example, using the "backpacker's standard" of 2 cups per boil, which is almost what most freeze dried meals require. As yous adapt these numbers, cry back that it's to a greater extent than efficient per loving cup to boil a larger quantity than a smaller. In other words, if 2 cups requires, say, 8 g (4 g per cup), iii cups mightiness entirely require 10.5 g (3.5 g per cup), as well as 1 loving cup mightiness require 4.5 g. Something similar that. You ask to adapt all these numbers based on your experience of how much fuel yous truly use. For this example, I'm going to select a release of 8 g per 500 ml boiled which is neither overly generous nor overly optimistic.
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| Nice location to camp. It'd live a shame to run out of fuel as well as spoil such a perfect camp. |
Given the instance presented inwards the chart, below, I ask about 96 g of fuel for a 4 twenty-four hr menstruation trip or almost 24 g per day. Yes, I know nosotros mightiness larn amend actual results than 8 g per 500 ml boiled which would laissez passer me dissimilar numbers, but let's but become amongst 8 g per 500 ml boiled for this example. If I ask 96 g of fuel, as well as I direct keep a 110 g canister of gas, I would direct keep xiv g every bit a margin for error. You'd direct keep to think almost whether or non that's going to locomote for you. If the weather's warmer, as well as then mayhap that's fine. If it's colder, mayhap innovation on more. If you're amongst a group, mayhap that's fine. If you're going solo, mayhap innovation on more. And therefore on. Think it through as well as direct the the amount yous experience comfortable with.
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| East Vidette every bit seen from the John Muir Trail. Don't allow pitiful planning ruin your dream hike! |
NOTE: For your kickoff several trips, if you're novel to backpacking, assume you'll ask to a greater extent than fuel rather than less until yous larn a experience for how much fuel your manner of cooking truly requires.
| Amt Boiled (ml) | Fuel per boil (g) | ||
| Day1 | Breakfast | 500 | 8 |
| Supper | 500 | 8 | |
| Hot Drinks | 500 | 8 | |
| Day2 | Breakfast | 500 | 8 |
| Supper | 500 | 8 | |
| Hot Drinks | 500 | 8 | |
| Day3 | Breakfast | 500 | 8 |
| Supper | 500 | 8 | |
| Hot Drinks | 500 | 8 | |
| Day4 | Breakfast | 500 | 8 |
| Supper | 500 | 8 | |
| Hot Drinks | 500 | 8 | |
| 4 | 6000 | 96 | |
| Average g of fuel per day: | 24 | ||
As always, I give cheers yous for joining me,
HJ
Note: All photos are from my 2015 John Muir Trail department hike (Onion Valley to Whitney Portal).
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| The author, out on the trail where he belongs. Why on the world am I indoors blogging on stoves correct now? |
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