High Efficiency Pots: Optimus Terra Weekend .95L & Olicamp XTS 1L?

Just received that pot in the mail this week. I've only done one boil with Esbit and one with my Soto ODR. Just anodized aluminum and doesn't appear to have non stick coating above that. I only boil water so a non issue for me. I'll post a more detailed initial impressions summary later (off to hockey) but so far it appears to be a little heavy but performs well. Time will tell.

Thanks Ian. You might want to also check out the Terra Weekend HE main .95L pot – guessing it's lighter weight.

Another option. On sale right now:

http://www.sierratradingpost.com/primus-alutech-trek-kettle-10l~p~4415p/?filterString=s~primus%2F&colorFamily=99

Apply this 35% off code and its only about 13 bucks or so. UNG2310D

As the OP said, aluminum pots conduct and s p r e a d heat much better than ti pots.

Also low, wide pots heat their contents faster than tall, narrow pots. (More bottom surface area on low, wide pots)

That's why I got an anodized aluminum 3 cup pot for my T.D. Sidewinder cone stove.

Charles that's a nice deal but don't think it has a heat exchanger.

Eric that Open Country 3 cup pot is really nice, but I wish they made it and the 2L version with a built in folding handle.

Oops, apologies, didn't read your post close enough to realize you were looking at heat exchanger pots. Good luck!

I'd love to see how the HE pots with and without a simple Al or Ti windscreen (like Suluk46 or MYOG) measure up against a Caldera Cone with non-HE hard anodized pot when burning esbit and alcohol.

Note though that the Caldera Ti Tri has the added benefit of being able to burn wood with the Ti floor.

I purchased this pot off of Amazon this week for $30.48 after taxes.

http://www.amazon.com/Olicamp-Hard-Anodized-XTS-1-Litre/dp/B007OJKI2U

Fire Maple seems to sell the same exact pot.

http://www.aliexpress.com/store/product/Fire-Maple-Outdoor-Portable-Heat-Exchanger-Pot-Camping-Pot-Outdoor-Kettle-1L-FMC-XK6/917627_723955728.html

There weren't many reviews available for this pot. I found one from Section Hiker (http://sectionhiker.com/olicamp-hard-anodized-xts-aluminum-pot-with-heat-exchanger/) but Mr. Philip Werner did not provide his experiences on this pot's performance beyond:

"Heat exchanger fins are built into the bottom of the pot that retain stove heat improving fuel efficiency, up to 40%, according to the manufacturer. I don’t have the means to test that, but anecdotally my Soto OD-1R canister stove boils 3/4 of a liter of water noticeably faster in this pot than in the titanium Evernew pasta pot I’ve been using for the past two years."

From reading his article, it appears that he is expecting better fuel economy and that the fuel savings will make up for the extra weight. I doubt that there will be an appreciable fuel savings but likewise, this assumption is anecdotal.

In fairness to Olicamp, they only advertise 40% faster boiling times and do not make any claims to improve fuel efficiency.

So here we go….

Specs on this pot per my measurements:

Width 4 1/2"
Height 5 1/8"
Weight of pot without handles or lid 5.7oz
Handles .9oz
Lid 1.1 oz

For the next four tests, the water was 16oz and 40*. Fuel used was Jetboil/Jetpower:

Soto ODR with optional windscreen and Olicamp XTS pot:

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*With heat output throttled down: 2:45 to full boil / 8 grams of fuel
*With maximum heat output: 2:09 / 7 grams of fuel

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(Seems that the best way to use this pot with a canister stove is full blast.)

Soto ODR with optional windscreen and Snowpeak 700 pot:

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*With heat output throttled down to width of pot: 3:12 to full boil / 7 grams of fuel
*With maximum heat output: Dunno…. ran out of fuel. My experience has been that since this pot is so narrow (3.5" compared to the 4.5" Olicamp), that maximum heat output is a waste of fuel and my fuel consumption is typically in excess of 12 grams.

I won't waste anymore of your time describing my Esbit/Coghlan performance with the pot other than I see no noticeable improvement. I suspect that alcohol wouldn't do any better. Daniel Fish created a thread on his Frankenstein Esbit system which also seems to indicate that the heat exchanger technology is lost on Esbit fuel:

http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=74676

I'm going to boil some more water with this pot but I suspect that I'd be better off with a 1L titanium pot than with the Olicamp XTS.

To be continued….

My bad. The third picture was supposed to be a picture of a size comparison of the Snowpeak 700 but it really doesn't matter.

Here are some of Hiram's reviews using alcohol. He doesn't comment on the volume of fuel used when he used the Trangia but the boil time was respectable:

http://www.youtube.com/watch?v=5avPENqASO4

Super Venom didn't work:

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Sorry in advance for the thread drift.

I used a ti wing stove with it.

The Esbit cook system is so light to begin with that it's difficult to make these HE systems pay for the weight penalty in fuel efficiency… if any fuel efficiency can be found. I'd be happy for someone to prove me wrong.

I heated 16oz of 40* water with a .25 Coghlan tablet and 32 oz of 40* with a .5 oz Esbit tablet enough to rehydrate a meal or enjoy an scalding cup of coffee but I found no noticeable difference than what I was already achieving with a regular ti pot.

Hopefully the OP will have better success with his alky stove.

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Yeah, esbit is probably not a good thing for heat exchangers. They tend to burn a bit sooty and thus will reduce the efficiency. Add in that they don't produce a high heat and you get close to the same results, anyway.

If you have good efficiency with a stove, HE pots won't help much. They work by trapping *excess* heat and putting it back into the pot. There are no free rides.

Postive to negative is general flow patterns. If you can put your hand over a pot and lift it, chances are there is not enough heat lost to care wether the heat is being transfered through a heat exchanger, or, conduction along the bottom of the pot. Follow? I would allow *some* heat loss, because with none, it wouldn't work. We think of fuel as the only combustable, but in fact there are three parts: hexamine, oxygen, and inert components. During combustion, we typically reduce the general size of things. For example: Hydrogen + Oxygen -> Water. A LOT of Hydrogen and oxygen are needed to produce a teaspoon of water. The extra heat sort of drives fresh air into the burners, a primary burning component, and flushes away expended fuel. (Glossing over a lot.)

Or, think of it this way, if you want: The heat from the stove is transfered at the heat excanger, leaving the so called heated air, cool. Cool air does NOT transfer heat, if anything it will remove heat from the pot. Tall pots are more prone to this type of cooling than shorter wider pots. (Actually, thermodynamics dictates that both heating and cooling take place at the same time, but, I am glossing over this for simplicity…not that I remremem…uhh…ber that much from 45 year old class work.)

My first pot was a Coleman Max anodized aluminum set – mostly used the 30oz pot. With an F1 Ultralight stove a lot of the flame went up the sides on full blast.

I picked up a Primus ETA Powerpot 1L which – while heavier – did seem to capture the flames better and while I have no science to back it up seemed to boil water a good bit faster. On my last trip I kept pace in boil times roughly with two Jetboils guys were using. The 1.3L pot that came with the Primus ETA Packlite is also really efficient particularly on that stove – given the remote setup allows a windscreen… but it is bigger and heavier (albeit rock solid stable). The 1L ETA Powerpot seems to be a nice mix between efficiency size and weight (particularly if you can put a different lid on it…). And it has a decent nonstick coating.

I picked up one of the Primus aluminum 1L kettles from STP to have a lighter option and smaller pack size due to losing the fry pan lid of the PowerPot – I need to see if it fits the PowerPot as it would save some weight and size… It's a nice pot and quite light for the size – not quite as well made I think as the ETA powerpot but still better than the Coleman (which is itself not a bad set – it will go to my son when he is stove certified).

All that being said this weekend I used a Vargo Ti light 750 I recently picked up and for solo stuff I'm going to be hard pressed to use something else if boiling water is all I'm doing.

"They work by trapping *excess* heat and putting it back into the pot."

I don't think that the heat got out of the pot in the first place.

–B.G.–

EJ, I own both Heat Exchanger pots you mention and have used them both with canister stoves, but neither esbit nor alcohol. I would only use Esbit in a moment of need, as I wouldn't want to coke up the fins on either pot. I'm not sure which alky stoves either pot will comfortably rest upon, but I am sure they both sit on my wood-burning stove and work well with it.

I've used the Optimus pot side-by-side with both the smaller, non HE Optimus Terra Solo pot and an un-anodized but blackened, aluminum pot that's nearly identical in size to the Weekender HE. With the same volume of water, from the same source, both on top of Optimus Crux stoves using Snow Peak fuel, the Weekender boils faster.

[EDIT] Since you asked, here are the various weights of the Optimus Weekender HE pot:

267 grams complete.

190 grams for the lower.

77 grams for the upper.

The Fire Maple XKS and Olicamp XTS 1l are identical, other than that the FM version has orange trim and the Oli has blue. I own the FM and my Scout troop owns the Oli's. I know exactly what these weigh with the lid:

The FM/Oli pot holds just a skootch more water and doesn't include that little pan for a lid. It boils water quickly, too. When combined with the FM 117t stove and using water from a common source with other folks at a big training session where we cooked water, ha ha!, for meals and where I presume the amounts were similar since we were using similar MH meals, I boiled a lot faster than everything else including Jet Boils and a Whisperlite. The output of the FM117t is essentially the same as that of the Crux (pretty much the same head).

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Erik, what's the weight of the Terra Weekend .95L pot and of the lid? One source said 4.2 ounces for the .95L pot, but not sure how accurate they are. If only 4.2 ounces, a lightweight Ti lid would hardly add weight, and it would be lighter than the Oli/Firemaple pot.

Daniel, I'd agree. I like the idea of a light HE pot for use with a gas canister, especially if boiling for 2 people. For solo esbit use, I'd stick with a flat bottom pot. If using a Caldera Cone, the cone will help make up for a narrower pot, though a wider pot will still perform slightly better.

For gas note that a taller narrower pot has the advantage of containing gas + small stove.

Daniel, which pots are you using for esbit and gas?

Any favorites?

Phil at Sectionhiker has a review of the Esbit HE alcohol cookset. It's quite heavy and could be significantly lightened by using a lighter lid, lighter pot stand and lighter stove (and for that matter, lighter HE pot of similar size if one is available – the Optimus Terra Weekend .95L pot may lighter according to a retailer who said it weighs only 4.1-2 ounces.

I also think the windscreen pot stand is not going to be effective as a windscreen – way too many windows/holes.

Yes, Philip does some nice reviews. When you are trying to get companies to send you gear, you would NEVER say their product performs poorly. You would say it performed as "well as expected" or choose conditions where it performed "fairly well." Philip does a good job threading that needle. I sort of doubt he will carry it on a regular basis, though.

I own this non HE cook set from Esbit. Of the few systems I own, this one has the worst performance.

EJ, I edited my first post, inserting the weights and photos of the Weekender HE pot. I didn't spring out the handles because they're nice and snug right now… and I've seen 'em get loose by removal on another's pot.

The Weekender set weighs more than the Fire Maple/Olicamp, but the lower pot is lighter by a good margin. If you come up with a great, light lid that will snap-on or can be secured, please show us!