Thread: Kmart/Campmaster "Jetboil"

Originally Posted by No.3

I've never seen a 75/25 brew but I guess they are out there - I have found a campmaster 80/20 cylinder and in the interests of science I'll line up the same test I did with the Kovea 70/30 can. That will tell us what the difference in performance is with the change in mix - both are near new cans. For memory of the reference, the Kovea 70/30 went from 20degC to boiling in for minutes and 6 seconds. I would expect the 80/20 to be between 4:30 and 5 mins from past experience. The 50/50 expensive brews are noticeably quicker.

For really cold days, I've been known to piss on a patch of ground and bury the can in it prior to cooking - giving the can a really good shake up first and even leaving it inside my top layer to warm up. Anything to boil the butane fraction again and allow it to burn - it will just sit on the bottom of the can and do f-all if it's liquid!

Burying the can is actually a good move for stability purposes as well - doesn't work in rocky areas though.

Its quite interesting looking at the various mixes.
Ive just been looking at some of the canisters ive got here and realised it doesnt even say the mix ratios on any of them.
A couple of my koveas just say butane/propane, and the rest say isobutane/propane, then my primus powergas is marked 4 seasons propane/butane/isobutane.
jetboil has always had isobutane in the mix and performs better than butane as it has a lower boiling point.
Going by what you are saying, Kovea may have increased their propane ratios to 30%, thats got to be a good thing.
These koveas are still advertises here at 75/25, but that info might be out of date now.
https://www.equipoutdoors.co.nz/Kove..._-_4_Pack.html