Snow Peak stove windscreen

You might state what materials you used for the windscreen and for the heat reflector. Also, you might state what the weight is for the windscreen and for the heat reflector.

–B.G.–

Good call, Bob. My bad. The material is .005" CP-2 titanium foil purchased from Ti Goat. Together, both pieces weigh 0.7 oz. My prototype version of this setup was made of .003" 6Al-4V titanium, and it weighed just 0.4 oz. But it isn't as tall as this one, the bottom plate doesn't fit as snugly to block the wind from below, and the 6/4 material is more brittle than CP-2.

I would think that 0.005 foil is better if it is weight-bearing, but yours isn't, so the 0.003 foil should be adequate. Of course, when you are getting down to 0.4 versus 0.7 ounces, it doesn't matter too much.

In MSR parlance, the main vertical piece is the wind screen, and the round bottom piece is called the heat reflector. About 90% of its function is reflecting the burner heat back up, which makes it more efficient. It does block a little wind that may be sneaking around underneath, and it blocks excess heat from toasting the fuel canister. MSR makes those things out of aluminum foil, but it is nowhere near that light.

–B.G.–

"I would think that 0.005 foil is better if it is weight-bearing, but yours isn't"

Actually, Bob, it will be weight-bearing when in the Esbit/alcohol mode.

"About 90% of its function is reflecting the burner heat back up"

I think that the reflector is paramount here in keeping wind from messing with the flame. It certainly does reflect heat back up to the pot, and the titanium screen helps hold the heat close to the pot–I think that's why this all works as well as it does. But make no mistake, a hot titanium reflector can certainly warm up the canister 2" away. Actually, that quality came in handy a week ago when we were snow camping at +20*F. I found that by turning up the stove's output a little, I was able to create enough downward heat flow to keep the canister happily efficient.

Thanks for your input, Bob. For some reason, I just knew you would be one of the first to chime in. I didn't know that you'd be the only one, however. Must not be many SP Giga users out there, or else my idea doesn't appeal. I'm certain that Roger will hit me upside the head fairly soon anyway. No matter, as I'm off to another earth shaking project now.

If your rig is only weight-bearing from the middle holes down, then you could substitute the lighter foil for the top half and leave the heavier foil for the bottom half.

And then, you could fashion a heat vent in the reflector. For those cold mornings, you could open the heat vent to keep the fuel warm. Then close it for hot days to prevent overheating the fuel.

But, I don't know if you want to gild the lily.

I don't use Snow Peak stoves, but most of them are about the same.

–B.G.–

There are plenty of other SP Giga users out there but in my case I'm running a much larger pan for water for three people. In my case I worked on a windscreen clipped to my pan and didn't get into the reflector stuff. Roger chimed in about canister heat issues. Give it time. The other thing is for some of us the Giga is a summertime stove , not a winter stove so consider whether your set up is way too hot for Summer?

Hi Gary

Cute! And neat.

Comment: I think the flame normally picks up extra air as it travels up to the pot, although with a Snow Peak GT100 (aka GigaPower) it may not need very much. What this means is that you need to ensure a little air ventilation at the bottom, for that extra bleed of air. Although I can see plenty of air holes at the bottom in the fourth photo, so maybe you could ignore that.

I am a little puzzled as to why the canister heats up when you have anything more than a very low setting. I don't get that problem with a bare stove. A bit strange.

> (If you do, and live, Roger C. will thump you hard).
Not a chance. I will just be standing well clear! :-)

Compliments.

Cheers

"Comment: I think the flame normally picks up extra air as it travels up to the pot, although with a Snow Peak GT100 (aka GigaPower) it may not need very much. What this means is that you need to ensure a little air ventilation at the bottom, for that extra bleed of air. Although I can see plenty of air holes at the bottom in the fourth photo, so maybe you could ignore that.

I am a little puzzled as to why the canister heats up when you have anything more than a very low setting. I don't get that problem with a bare stove. A bit strange."

Yeah, I am guessing there is just not enough air ventilation,hence the additional heat on the burner head being conducted down to the canister.

I'm not convinced of the wisdom of the 'floor' to this windscreen; are you not partially blocking the air supply to the burner?

Wind blowing across a burner generally blows horizontally, so the main protection required is from the sidewall. I'm not sure that the floor provides much improvement to the wind protection.

Easy to test this, of course: just leave the floor out next time you use the stove…

It would save a few precious grammes, too ;-)

There's an argument that the floor acts as a reflector, preventing the canister from getting hot, but removing it is likely to improve the chimney effect, pulling air over the canister. Again, easy to check.

I'd also go for a slot & tab closure mechanism, as it's simple to make & use, and doesn't require a locking pin (that can get lost). One slot and tab at each end of the screen; upper tab faces out, lower tab faces in. Tabs formed just once, and slide into place in their mating slots.

very nice , and the heat getting down to the canister is a concern .I made one very similar to your design last year out of soft alum. trying to get the max amount of boils (16 once ) from a canister.if not on low , heat would build under the bottom and get a bit warm @ top of canister,not sure why ,could be radiant heat from the bottom or not enough air getting to the burner thus causing heat to travel down the shaft to the canister ? but on a very low setting (as mentioned ) Id get 15-19 16once boils out of a large can in the home/Patio testing but on trail that would drop due to excess wind and flame going out ….Jerry PS because of the heat build up it would be tough to recommend to any one

Thanks for your comments, guys. It is appreciated.

I think James has it correct. The canister warms up from being just 2" from the reflector. Since there is minimal air flow within the confines of the reflector/screen, and since titanium is a poor conductor of heat, things can get pretty warm inside that somewhat closed environment. This helps with boiling the water efficiently, of course. But if things get too hot, some of that heat will radiate downward from the reflector to the canister. My design somewhat prevents a dangerous scenerio from occuring. The stove cannot be turned up very high due to the limited intake of air to feed the flame–the stove just sputters from lack of enough oxygen. If I know I will need a more robust flame, I don't use the reflector. This allows for plenty of air to reach the burner from underneath, but it also allows strong winds to affect the stove's efficiency. So, it's a trade-off.

Again, thanks for your informed comments and opinions.

what did you use for the handles and pot lid?

Rick, I used silicone tubing to insulate the handles.

I thought that might be the answer. Did a short google for it but came up short.

I have tried several materials but nothing has worked. Those look good.

Thx in advance.

I was planning on fashioning somethig of that sort from soft aluminum and see how it worked.

Very nice.

I was just thinking of adding just a screen around the pot – 700 ml bc

I made this one from a Snow Peak Ti bowl. It works fine. I'm on the road and don't have the weight, but it's pretty light.

Snow Peak Ti Bowl windscreen for Giga Power stove.

I tried making an oven out of pie tins on my SP every thing was above the flame control knob but i had the same results the canister was hot which made little sence to me cause there is a sheild between the stove and canister and it was to bad cause it cooked a great pizza with less fuel than boiling two cups of water

I wonder if the canister gets hot from heat transferring down the neck of the stove rather than the radiant heat? With no windscreen in place, there is a lot of air available to cool the neck of the stove. It has to be getting pretty hot around that burner!

The old Gaz stoves had an accessory wind screen that was a shallow pan– tall enough to cover the burner and the pot stand and just reach the bottom of the pot. Maybe an inch tall or less?

"The old Gaz stoves had an accessory wind screen that was a shallow pan– tall enough to cover the burner and the pot stand and just reach the bottom of the pot. Maybe an inch tall or less?"

Snow Peak makes one like that. Don't work worth a pile of rooster p00p.

As I read the various comments, I've been playing around with different variations of my setup. I find that by removing the reflector and employing a full flame, the canister can heat up fairly quickly, wind or no wind. There's not a lot of room between the pot and the screen for a rapid chimney effect, so that much of the heat tends to radiate downward as it bounces off the bottom of the pot. The reflector mitigates this to a great degree, but only if the stove is not turned up very high. But the minimal amount of space between the pot and screen/reflector is, in my opinion, the reason for the efficiency of the setup–nearly all of the heat that is generated is utilized to boil the water. I am certain that relacing the titanium components with aluminum would result in a lower efficiency, since aluminum would conduct much of the heat away from the pot. Titanium is such a poor conductor, that the heat gets rather trapped between the pot and the screen/reflector.

I've appreciated all of your comments–thanks.

As you pointed out somewhere above, as long as the canister isn't hot to the touch you're okay, according to Roger

If it gets cold, you can take advantage of this. Canisters don't work so well especially below freezing. If you get some heat from the flame then this won't be a problem.

>>> Canisters don't work so well especially below freezing. If you get some heat from the flame then this won't be a problem.

The problem with this is that it relies on positive feedback. If its cold and the canister is less than 1/3 full, the flame won't produce enough heat to warm the canister to boost the flame…
You will need to pre-heat the canister first to get it going, then the flame might produce enough heat to compensate for evaporative cooling of the canister.

"You will need to pre-heat the canister first to get it going, then the flame might produce enough heat to compensate for evaporative cooling of the canister."

Exactly

The problem with pre-heating is that as soon as you turn it on, evaporative cooling quickly cools it and it stops working.

Heat from flame will solve that problem.

This is a great thread. Very helpful so good to get this up so people can comment.

I am going to order some stuff from Tigoat and make something work. Not really a fan of aluminum foil. Seems to be that Ti is a better use for this application since it does not conduct heat well and keeps it trapped.

I will see whats up with the spacing from the reflector to can and see if the can heats up or maybe making it 3 inches space instead.

Thanks everyone!