Soto Windmaster vs BRS 3000T and Heat exchanger vs regular pot.

Marbles

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I finally picked up a BRS 3000T as it is so light and well regarded and used by more competent individuals than myself ( @B_Reynolds_AK and @AK Troutbum come to mind) while also not being expensive. I was thinking of saving a about 1.5 ounces by swapping out my Soto Windmaster.

Soto.
78 g as carried (less 12 for bag). I use the triflex por support. The Soto is tall, but has a very reliable built in ignition and a regulator.

BRS.
29 g as carried (less 2 for bag). No ignition. Not regulated.

Test, bring 8 oz tap water to a rolling boil. Setting, my dinning room table.

Unless otherwise stated a Toaks 650 ml cup was used. No lid.

First test on the BRS, I realized I needed to collect more data and measure differently.
Start weight 10.0 oz
Time 3:02
End weight 10.0 oz

The first two were as I would adjust flame in the field.

BRS
Start temp 66.5 F
Start weight 312~ g
Time 2:57
End weight 309~ g =3 g used

Soto
Start temp. 63.6 F
Start weight 350~ g
Time 1:54
End weight 346~ g. =4 g used

Decided to try for faster boil by turning this up well past what I would use in the field.

BRS, not at max, but uncomfortably high with flames licking up the cut sides.
Start temp 60.2 F
Start weight 301~ g
Time 1:33
End weight 295~ g. = 6 g

Soto turned up to max. This flame and noise levere were still more comfortable than the BRS at less than max.
Start temp. 76.8 F
Start weight 335~ g
Time 1:20
End weight 330~ g. =5 g

I wanted to see if I could get more efficiency from the Soto by turning it down.
Soto
Start temp 61.3 F
Start weight 346~ g
Time 2:26
End weight 341~ g. =5 g

Conclusion, not much meaningful difference in nice conditions.

Now, the question is how does wind effect them? I used a small fan set to high, generating an 8.0 mph wind at the burner location (measured with a Kestrel).

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BRS wind test. Test stopped before reaching boil.
Start temp 69.9 F
Start weight 290~ g
Time 10:32 to reach 150 F
End weight 265~ g. = 25 g. (2.38g/min)

Soto wind test, better, but still struggling and stopped before reaching a full rolling boil (but a light boil was reached at about 17 minutes).
Start temp 69.4 F
Start weight 305~ g
Time 18:00, boiling, but not a full rolling boil
End weight 259~ g. = 46 g. (2.56g/min)
Hit 150 F at 5:06 minutes
Hit 202.3 F at 10:00 minutes
Put lid on at 14 minutes just to see if I could get to a rolling boil.

Switched to the Fire Maple heat exchanger pot.

BRS 8.0 mph wind Fire Maple pot
Start temp 72.8 F
Start weight 211~ g
Time 10:32 to reach 128.6 F
End weight 189~ g. = 22 g

Soto 8.0 mph wind with Fire Maple pot
Start temp 71.9 F
Start weight 259~ g
Time 2:07
End weight 254~ g. = 5 g

The Soto clearly wins in the wind, and the Soto paired with the Fire Maple pot is a champ (which matches my experience in the field).

If I modified the Fire Maple pot or the BRS so they fit together better, the BRS would do better. I might go back and modify the BRS to retest in wind with the Fire Maple pot.

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I also think you can see the advantage of the Soto's regulator as the last test with the BRS involved turning it up to max, but burning less fuel than a similar test below max with a less empty and warmer canister. The difference is small enough to be measurement error as well though, so caution is needed in making any conclusions.

Weights
-Toaks 650 ml pot 63 g (no lid)
-Fire Maple pot 138 g (no lid)
-Fire Maple lid 28 g (fits the Toaks pot, better lid than what comes with the Toaks)
-Soto 79 g
-BRS 29 g

I think I would swap out the Fire Maple pot for the Toaks pot to save weight before I would swap the Soto out for the BRS. On short over nights, I will consider the Toaks pot as fuel consumption doesn't really matter. On longer hunts, my system will stay the Soto and Fire Maple.

Testing flaw's.
-used a kitchen scale for weights, so they are +/- 1 g. In perfect conditions the difference in fuel use could be a measurement error. But I think the trend favors the BRS.
-I measured the water by volume, and not weight.
-I tried to time for when the entire surface was covered in large bubbles, but would say time is +/- 4 seconds.
- I just set the flame by feel. This is more accurate to my use, but not as repeatable.
- I only ran each test once.

Before getting to the Soto Windmaster I used an MSR Pocket Rocket, Jet Boil Flash, Snow Peak GigaPower Stove Manual. The Soto is the only one I have been happy with using in field conditions. Primarily because most of my use is above tree line in wind and probably because I'm lazy with wind shielding.

Here is a good thread that argues against me. https://rokslide.com/forums/threads/ul-fuel-efficient-cook-system.211835/
 
Modified BRS 8.0 mph wind Fire Maple.
Start temp 70.8 F
Start weight 189~ g
Time 4:24. (Half the pot was at a rolling boil, at about 4 minutes and windward side simply would not come up.
End weight 178~ g. = 11 g
Canister was close to empty. BRS was wide open.

Re-ran the Soto on the same canister after the BRS to see the effect of the near empty canister.

Soto 8.0 mph wind with Fire Maple pot
Start temp 45.8 F
Start weight 219~ g
Canister ran out of fuel at 0:59.
Temp was 133.1 with weight 216 g. So 80 F change. Flame on the Soto was consistent, then in a mater of seconds dropped to almost nothing.

Modified BRS 8.0 mph wind Fire Maple pot. Newer canister (MSR this time rather than Jetboil brand).
Start temp 56.4 F
Start weight 248~ g
Time 2:39
End weight 240~ g. = 8 g
Still struggling to bring both sides of the pot to a full rolling boil.

Soto 8.0 mph wind with Fire Maple pot. Same canister the BRS was just tested on previously.
Start temp 53.2 F
Start weight 281~ g
Time 1:35
End weight 275~ g. = 6 g
Ran the Soto close to wide open.

Soto run from last night, just so people don't have to scole back and search.

Soto 8.0 mph wind with Fire Maple pot
Start temp 71.9 F
Start weight 259~ g
Time 2:07
End weight 254~ g. = 5 g

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I’ve settled on the pocket rocket 2 coupled with the fire maple pot. The BRS I found quality to be inconsistent across stoves, and I ended up burning through a few.
 
My Soto windmaster has been nothing short of phenominal for almost 10 years. Lights on the first push of the igniter probably 90% of the time. I love how light it is. Overall, I have not found anything better.
 
Doesn’t seem like a fair test without actually nesting the BRS to the fire maple.
I think fair is the wrong word. It implies injustice. But, it is a point of interest to collect more data. That data is now in post number two.
 
Post number two is updated with data comparing a modified BRS using the Fire Maple pot.
 
That’s impressive! I’m using a Soto Amicus atm, but you make me think the windmaster might be a worthy upgrade eventually. Still torn on going with the heavier fire maple pot vs the toaks.
 
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