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christopher smead
(hamsterfish) - MLife

Locale: hamsterfish
monatauk gnat vs snowpeak litemax on 03/01/2012 01:52:49 MST Print View

Has anyone tested the monatauk gnat and snowpeak litemax side by side to see which one is the most efficient?

christopher smead
(hamsterfish) - MLife

Locale: hamsterfish
Gnat seems better on 03/01/2012 15:30:01 MST Print View

Answering my own question in case others are interested.

I found this: http://hardcoreoutdoor.com/2010/06/14/competition-makes-cannister-stoves-better.aspx

It seems the Gnat is a bit more efficient and slightly lighter.

christopher smead
(hamsterfish) - MLife

Locale: hamsterfish
Thanks Chris on 03/01/2012 15:30:49 MST Print View

You rock!

Bob Gross
(--B.G.--) - F

Locale: Silicon Valley
Re: Gnat seems better on 03/01/2012 15:44:57 MST Print View

How did you reach the conclusion that the Gnat was a bit more efficient? The article never measured efficiency by fuel weight. They measured time-to-boil, and often that is the inverse of efficiency.

--B.G.--

Snap Judgement
(kthompson) - MLife

Locale: Eel River Valley
Re: Gnat seems better on 03/01/2012 16:05:22 MST Print View

You want CO numbers for efficiency. The Snow peak burns very cleanly.

Edited by kthompson on 03/01/2012 16:06:18 MST.

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: Gnat seems better on 03/01/2012 16:16:01 MST Print View

You need to measure amount of fuel used to boil water - weight of canister before and after, make sure you wipe off any condensed water, controlled amount of water and temperature increase,...

Compare Gnat, Jetboil,...

Comparing time to boil is not very uesful, although it is roughly proportional to amount of fuel used

christopher smead
(hamsterfish) - MLife

Locale: hamsterfish
Darn! on 03/01/2012 16:49:42 MST Print View

Doh!
I just assumed that they put out the same amount of fuel in that given amount of time. My bad. I just ordered the gnat too! I knew I should have waited for advice from you guys.

I might have to do some testing myself.

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: Darn! on 03/01/2012 17:00:12 MST Print View

I think you'll be happy with the Gnat

I think all canister stoves have similar efficiency - except Jetboil and Reactor are better...

M B
(livingontheroad) - M
gnat on 03/01/2012 17:33:36 MST Print View

the Gnats design doesnt lend itself to making a light Al windscreen that can enclose the burner head and pot bottom, there isnt anything to mount it on with the pot supports on top of the burner.

A slight breeze blows the heat away from most of them, destroying efficiency anyway.

Bob Gross
(--B.G.--) - F

Locale: Silicon Valley
Re: gnat on 03/01/2012 18:03:18 MST Print View

"the Gnats design doesnt lend itself to making a light Al windscreen that can enclose the burner head and pot bottom, there isnt anything to mount it on with the pot supports on top of the burner."

Yes, but... you don't exactly need such a windscreen.

I made a flame concentrator out of a thin strip of titanium foil, and it hangs on the three pot support arms. That helps for the case of a narrow cook pot. Then a simple one square foot of ordinary aluminum foil works for ordinary wind.

--B.G.--

Nick Gatel
(ngatel) - MLife

Locale: Southern California
Re: monatauk gnat vs snowpeak litemax on 03/01/2012 18:05:36 MST Print View

I think Roger C did a review of the LiteMax and wasn't favorable to it compared to the GigaPower. I bet there is probably a BPL Gnat review somewhere too.

Snap Judgement
(kthompson) - MLife

Locale: Eel River Valley
Re: monatauk gnat vs snowpeak litemax on 03/01/2012 18:08:32 MST Print View

It's because the Litemax pot support legs are across the burner unlike the Giga.

James Klein
(jnklein21) - M

Locale: Southeast
Re: gnat on 03/01/2012 20:45:52 MST Print View

While enclosing the burner of a gnat is harder to do than with stoves that have pot supports originating below the burner it is possible.

You can rig the windscreen off of the pot. I use a couple of spacer ribs that squeeze onto the pot. To those ribs I wrap around an Al foil windscreen to mostly enclose the pot and stove.

James Klein
(jnklein21) - M

Locale: Southeast
Re: Darn! on 03/01/2012 20:49:57 MST Print View

Chris, I think each stove will be very similar w.r.t. fuel economy. Pot and windscreen selection will probably play a much bigger role in determining effiecency.

Roger Caffin
(rcaffin) - BPL Staff - MLife

Locale: Wollemi & Kosciusko NPs, Europe
Re: Re: monatauk gnat vs snowpeak litemax on 03/02/2012 02:18:57 MST Print View

Hi Nick

> I think Roger C did a review of the LiteMax and wasn't favorable to it compared to the GigaPower.

On the other hand, it is still a lot better than *some* other stoves ...

cheers

Hikin' Jim
(hikin_jim) - M

Locale: Los Angeles, CA, USA
Re: Re: Darn! on 03/02/2012 13:48:05 MST Print View

The basics of fuel economy are generally:
1. Use a lid. Escaping steam = wasted heat = wasted fuel.
2. Turn it down. High flame = heat up the sides = wasted fuel.
3. Use a windscreen (carefully!). Wind robs you of heat. Lost heat = wasted fuel.

Pot selection can affect efficiency. Dark colored pots absorb heat better. But unless you're going with a heat exchanger pot, pot selection is pretty secondary to the three basics.

The stove does matter, but one could take a relatively inefficient stove and use it well and get better fuel economy than on a more efficient stove used poorly.

If you want real efficiency, the integrated canister stoves on the market are really efficient.

HJ
Adventures In Stoving

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: Re: Re: Darn! on 03/02/2012 14:50:56 MST Print View

I wonder if you turned it down too low, then it would take longer to heat up so there's more time for it to lose heat, so it's actually less efficient

Probably that would be for way low, not an issue

I like all your stove info by the way, Jim

Now, I want to see the results of a pot boiling over onto the canister down below - will this be catastophic? Probably not a reasonably likely possibility since no one has ever reported this

Hikin' Jim
(hikin_jim) - M

Locale: Los Angeles, CA, USA
Re: Re: Re: Re: Darn! on 03/02/2012 22:12:02 MST Print View

Jerry Adams wrote: > I wonder if you turned it down too low, then it would take longer to heat up so there's more time for it to lose heat, so it's actually less efficient. Probably that would be for way low, not an issue
Jerry, that actually can be an issue, particularly in cold, windy weather. As with all things there is a balance to be struck. Your surmise is correct, though, that generally the point where your flame is so low that it becomes inefficient is so very low that it's typically not an issue. With some alcohol stoves, particularly in cold weather, it really can be an issue.

Jerry Adams wrote: > I like all your stove info by the way, Jim
Well, I keep trying anyway. :)

Jerry Adams wrote: > Now, I want to see the results of a pot boiling over onto the canister down below - will this be catastophic? Probably not a reasonably likely possibility since no one has ever reported this
I've actually considered doing this with a cheap canister stove and filming it (from a safe distance). I suspect you'd get a flare that would damage the stove but probably not cause a canister explosion, unless you were in conditions where for whatever reason the canister were already hot. A boil over under some circumstances certainly could be catastrophic.

HJ
Adventures In Stoving

Edited by hikin_jim on 03/02/2012 22:14:18 MST.

jerry adams
(retiredjerry) - MLife

Locale: Oregon and Washington
Re: Re: Re: Re: Re: Darn! on 03/02/2012 22:44:53 MST Print View

Some day someone will say, "that's weird, I haven't read any posts from hikin jim, I wonder what's happened to him?"...

James Klein
(jnklein21) - M

Locale: Southeast
Re: Re: Re: Darn! on 03/04/2012 20:27:48 MST Print View

Jim, Thanks for the basics:)...I mostly agree with them, they are more about technique than hardware though.

Re. Pot selection: I recomend you find a few pots of varying widths and run some tests. I bet you will find pot width is more important that pot color and on par with the other items you present.

Re. wasting heat up the sides and a proper windscreen: I am playing with a windscrreen set up that holds the stove exhaust close to the pot all the way up the side of the pot (to minimize how wasted heat). I am getting similiar result in efficiency and speed to the HTX pots. Also I am finding, with this set up, there is little variance in efficiency when throttled btw med-fast.