Its winter here in Australia and that means sub zero conditions in the Southern Highlands and Snowy Mountains. Cold is the enemy of my Jetboil because as low temperature makes it more difficult for the gas in the canister to evaporate and the pressure is reduced.
So off to the internet to look for solutions. I was initially looking to see if there was an adaptor available to make the canister ‘remote’ in the way my old epigas alpine stove used to be. Instead I sumbled across a much cheaper DIY option that is genius in its simplicity – the Heat Exchange or HX Strip
This info comes from the Backpackinglight forums and the thread I got this info from can be found HERE
The concept is super simple. A copper strip is strapped to the side of the canister so that one end is in the flame. It conducts heat from the flame to the canister.
On the BPL forums it seems to have gained the name the Moulder Strip after the chap who brought it to everyones attention and optimised it. Its also been known as the Alpine Bomb.
The picture above is the best itteration I’ve seen and the one I’m looking to copy. The things to note are:
- The shape of the strip is super simple (easy to both make and pack!)
- This will work on any upright canister stove I can think of
- Its very lightweight, infact an upright canister stove with HX strip will be a lot lighter than a stove with remote canister
- The HX strip is tightly clamped and shaped to the canister with a good contact patch. This is key for optimal heat transfer
- The velcro strap is protected by a bit of heat resistant silicon to prevent it melting
- The system can be easily added or removed from the canister to allow changing and use in variable conditions. (This should only be used in cold conditions)
Copper is the best material to work with for this. Its a very good thermal conductor, it has a high enough melting point and its maleable enough to be easy to work with.
Aluminium can work but needs to be twice as thick because of its reduced thermal conductivity. It is available from Bunnings though, copper is not 😦
What do you think, let me know in the comments