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Canister stove troubleshooting

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Tyler Miller BPL Member
PostedMar 25, 2013 at 4:37 pm

This might as well be a companion thread. I seem to be having stove trouble lately.

I did some testing today with my Optimus Crux. I took my Ti windscreen and paperclipped it to the bottom of my pot (no lower than the bottom of the burner head) and got 2 cups of cold tap water to boil in 4:30 with my stove turned low. The fuel canister was leftover from a prior trip, so it’s pressure was pretty low to begin with. The outside air temp was 45*. I’ll do a test without the windscreen later to see the results.

But here’s what is tripping me up. Two things – my stove is putting out an orange flame AND one section of the burner seems to be putting out much less of a flame. Look at the blue spots on the left compared to the right.

blue flame low on left

Any thoughts on the culprit here?

EDIT – did a second boil once the stove had some time to cool down. No windscreen this time. Water was boiling at 5:15. I noticed a very rapid drop in the output after one minute. The flame died wayyy down and was consistently orange. However, I didn’t see any difference in the flame across the head like last time. I’m sure the low flame was from a cold canister that’s just about dead.

This was at full-throttle. It leaves me wondering if the windscreen somehow had an effect on the burner that made one side of it burn lower than the other…I have no clue.
blue flame low

Tyler Miller BPL Member
PostedMar 25, 2013 at 5:04 pm

Well, this is convenient. I came across this article on the “new lightest stove” thread. I’ll do some research. No need to reply unless you think you know the answer.

I have a strong feeling that it’s a case of a cold, low canister.

Hikin’ Jim BPL Member
PostedMar 25, 2013 at 9:59 pm

Tyler,

It does sound like a case of “cold canister.” I’ve run stoves at warmer temperatures and had significant canister chilling. If your canister was low on fuel, it would have very little thermal mass and would be even more subject to canister chilling.

What brand of gas were you using? Do you know if it was isobutane or was it regular butane?

HJ
Adventures in Stoving

Tyler Miller BPL Member
PostedMar 26, 2013 at 5:45 am

Jim,

It's the Jetboil canister if that helps. It says "propane/isobutane".

PostedMar 26, 2013 at 10:09 am

Great stove. Mine does that, particularly just before the canister runs out completely, which I've watched a few times. I interpret this to be from a lower head pressure, which I recognize can come from a cold canister and/or a very-barely open valve.

USA Duane Hall BPL Member
PostedMar 26, 2013 at 10:23 am

I've had my Coleman Xpert stove on the Coleman Xtreme canister do that last Fall. I had to keep turning up the control knob. Figured it had to be the temps (25F), so with all the hype over the Xtreme line of stoves and especially the special canisters, they don't do any better than normal stoves/canisters.
Duane

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