This thread started over four years ago. I was not sure if I should start a new thread or add to some of the discussion from last month. Decided not to start a new one, as this might not be of interest to very many people.

Quoting from two posts above, first by TCS, second by me:

At the time that I saw those on the shelf, the first thing I thought of was that I should be prepared to use those in a pinch if I had to.

I researched those a bit more when I got home from that tour where I saw them in summer 2019. There are fittings you can use to transfer fuel from one of those skinny canisters to the short threaded canisters most of use use, and I bought some of those fittings, but my experience with those was that I had to be really careful or I would lose more gas in the transfer than I would like.

I would hate to be on a bike tour and be out of butane, then see one of those tall skinny canisters for sale and not be able to use it. The posting by TCS reminded me of that.

So I did another search for options. And I bought an adapter that will take a threaded type butane stove like many of us use onto a tall skinny cannister. This is what I bought. Shipping from Asia took over a month.
https://www.ebay.com/itm/353231854406

Ebay links disappear before these forum posts do, so I pasted the Ebay ad title here in case in a couple years someone wants to search Ebay to buy one:
Outdoor Camping Hiking Tripod Gas Stove Adapter Long Gas Tank Conversion Head

It looks like this.




On my scale it weights 97 grams.

Photo below is that adapter attached to a fuel tank and one of my stoves, an old Primus, I do not recall the model name. Works pretty good. Disregard the snow in the photo, it is February and I wanted to try it, the tank was warm and the stove worked fine for the half minute I tried it outside for the photo, but it was too light outside to see the flame.



There were no instructions with it, but it was easy to figure out. There are two tabs on the round mounting plate on the adapter. And the fuel canister has a disc on top with a cut out on part of the disc. You hold the canister approximately horizontal so that the cutout in the disc is up on top, you put the lower part of that disc behind the lower tab on the mounting plate, press the canister onto the adapter so that the cutout in the canister disc goes behind the upper mounting plate tab, you then twist the canister clockwise to lock it on.

Note that these tall skinny cannisters are butane, not a mix with iso-butane or propane. Thus, these tall skinny cannisters would be expected to perform poorly in cool weather. I assume that a wet towel or rag that is soaked in warm water and wrapped around the canister might be enough to warm up the fuel in the canister? I have not tried that but I know from experience that when it is cool, the butane/iso-butane/propane mix canisters work much better if they sit in a warm (not hot) water bath.

I plan to carry this adapter on future tours where I am using butane type stoves as a contingency in case I can only find the tall skinny butane cannisters in stores or for sale at campgrounds. I still plan to primarily use the short squat cannisters that most of us use, but this gives me a contingency plan if I can't find what I want.

Note that a few stoves will not work on this adapter, ones like the MSR Superfly that grip onto the big ring on top of the squat canisters will not work on this adapter. But most other stoves that thread onto the cannister should work fine without any difficulty.