Originally Posted By: Hikin_Jim
Pretty cool tests!
I think you may see where I get my recommendation of 20F as about as low as you want to go with an isobutane/propane mix (except in liquid feed mode) even though isobutane will continue to vaporize for another nine degrees Fahrenheit below my recommendation.

It would be interesting to see your tests repeated with nearly empty canisters -- after the majority of the propane is gone and most of the mix will be isobutane only.

HJ


Thanks Jim. Any further testing is going to have to wait as a urgent family matter has come about overnight and we are getting ready to leave in about 2 hours. By time we get back, probably sometime next week, our cold spell here will be over...
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

John Lubbock