here is my updated report:
By: Chad Poindexter
March 22, 2010
NAME: Chad Poindexter
EMAIL: chad (DOT) poindexter (AT) yahoo (DOT) com
LOCATION: Corinth, Alcorn County, Mississippi, USA
HEIGHT: 5' 10" (1.78 m)
WEIGHT: 200 lb (90.70 kg)
I am a fairly new hiker and have hiked in the Great Smoky Mountains
National Park, on the Appalachian Trail in Georgia, and at a few state
parks in Mississippi, Tennessee, and Alabama. I initially obtained
slightly heavy gear, however, I am currently making efforts to go
lighter. I love my tent and appreciate a warm drink in the morning, as
well as a warm meal at night. So far my distance has averaged around 10
mi (16 km) per day, depending on terrain. My wife or my son typically
tag along with me on my hikes.
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 6">>
Manufacturer: Primus AB
Year of Manufacture: 2009
Manufacturer's Website: <<HYPERLINK GOES HERE -
TEXT = "www.primus.com">>
MSRP: (US) $15.00
Listed Weight: 2.1 oz (60 g)
Measured Weight: 2.3 oz (65 g)
Listed Dimensions: 3.9 in x 3.0 in (100 x 76 mm)
Measured Height: 3 in (76 mm)
Width varies. Attached to a gas canister the diameter is 4.6 in (117
The Primus Windscreen (hereafter referred to as the "windscreen") is
actually a part of the Primus lineup. While the windscreen is able to
adapt to almost any cartridge-mounted gas stove on the market, it was
built exclusively for the Primus ExpressStove. When Primus designed this
windscreen, they did so with a purpose; A purpose to increase the
stove's efficiency by using this windscreen in conjunction with the
stove. What does this mean? It simply means a faster boil time which
equals less fuel consumption which in the long run enables the stove to
be more environmentally friendly.
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 1">>
As seen in the picture above, the windscreen is rather simple in design.
The windscreen is built by using three smooth, light-weight pieces of
aluminum, and six rivets. The left and right sides (two thicker,
gray-colored pieces) of the windscreen are simply held together in the
middle by a single thinner silver piece of aluminum using 3 rivets per
side (6 total rivets). This silver piece of aluminum in the middle that
holds the two sides together is what allows the windscreen to flex, or
to open and close. This flexing is what allows the windscreen to fit
around the lip of a gas canister. At the bottom of the windscreen is a
small hole (almost a complete circle) which fits around and attaches to
the lip of most fuel canisters. Also, located along the bottom of the
windscreen there are twenty individual slits (ten to each side) which
are cut out to allow air to flow up to the stove. There is a red and
white colored Primus logo with their name imprinted on one of the sides
of the windscreen.
Since this windscreen was originally designed to fit the Primus
ExpressStove (which has three arm supports), there are two notches cut
into the top of this windscreen. These notches will line up with the arm
supports on the stove. However, the 4.6 in (117 mm) diameter of the
windscreen will still allow many other stoves, whether with three or
four arm supports, to work fine in conjunction with the windscreen.
Another great thing about this windscreen is that it is very easy and
convenient to store. Just flip it upside down, flex the windscreen open,
and secure it around the lip of the fuel canister. Done, and simple.
(All of this can be seen in the pictures above.)
This windscreen has been with me the better part of the last year and I
have used it in conjunction with my stove a total of 30 + times on
backpacking trips alone. Quite a few other times while car camping and
even around my home with the kids (they enjoy cooking on my backpacking
kitchen, it's fun)! I have carried it with me on day hikes, overnight
trips, three-day trips and even on a five-day trip. I typically cook for
only two people, but have at times cooked for up to four people.
I have used this windscreen while cooking dinner for my wife and me, on
a warm summer evening (around 90 F or 32 C) at an elevation of 4,450 ft
(1356 m) atop a windy mountaintop, as well as breakfast for my son and
me, in an empty parking lot, at an elevation of 700 ft (213 m) on a cool
and breezy morning (around 30 F or -1 C) at the trail head just before
we hiked out.
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 7" IMAGE CAPTION = "Breakfast on a
cool & breezy morning at Sipsey Wilderness">>
Most recently I have used the windscreen with my stove while at a
shelter on the summit of Mt. LeConte, some 6,593 ft (2010 m) up. The
temperatures dipped to around 20 F (-7 C) and we had snow, ice, and even
some slight winds (around 10-15 mph or 16 - 24 kph).
I have used the windscreen while backpacking at Big Hill Pond State Park
in Tennessee, Sipsey Wilderness in Alabama, on the Appalachian Trail in
North Georgia, and in the Great Smoky Mountains National Park in
Tennessee. I have also used the windscreen while at some local
campgrounds and even while camping on the land behind my parents' house.
I have used the windscreen in temperatures as low as 10 F (-12 C) to as
high as around 90 F (32 C). The strongest winds I have used the
windscreen in were occasional gusts of around 20 mph (32 kph).
I have used this windscreen with a handful of different gas canisters,
all of them with complete success. Here are the canisters I have used
the windscreen with:
8 oz (113 g) Mountain Safety Research (MSR) fuel canister
4 oz (113 g) and 8 oz (227 g) Jetboil Jetpower fuel canisters
4 oz (113 g) Snow Peak Giga Power fuel canister
I have used this windscreen with only one stove, the Optimus Crux. The
Optimus Crux stove is similar to the Primus ExpressStove in that is has
three arm supports as well. Because of this, the Optimus Crux's arm
supports fall right in line with the two notched areas located at the
top of the windscreen. The arm supports on the Optimus Crux stove do not
extend out past the diameter of the windscreen, but rather come just to
the inside edge of the windscreen. However, the Optimus Crux stove does
stand 0.25 in (0.64 cm) taller than the windscreen allowing the cook pot
to sit atop the stove rather than directly on top of the windscreen. All
of this is to say that the Optimus Crux stove looks right at home inside
this windscreen. ***(See note at end of report on gap width between the
windscreen and the pot.)
I have used 2 different cook pots in conjunction with this setup
(Optimus Crux stove and the Primus Windscreen). The GSI Dualist 1.8L (61
fl oz) cook pot and a Backcountry.com 700 ml (23.7 fl oz) titanium pot
(as seen below).
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 2">>
Once I recieved the windscreen in the mail I unpackaged it and
immediately pulled out my stove and fuel canister so that I could
assemble all the pieces together to see how they fit, and of course to
try it out. And just as I had suspected, it was simple, there's no other
way to put it. I screwed my stove to the fuel canister, then I flexed
the windscreen open, placed the opening at the bottom of the windscreen
around the lip of the fuel canister, and let the windscreen close back
around the lip of the fuel canister. Done.
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 3">>
First, my beef with the windscreen:
The windscreen does a fine job at blocking very light to light winds,
but even in these winds the entire set up must be turned so that the
closed side of the windscreen is into the wind. Due to the design of the
windscreen, one side of the stove is always open to the elements,
leaving only one side actually being shielded from the elements. (This
leaves me to wonder how much wind is this windscreen actually blocking?)
Due to this design, if the wind changes once I start cooking I have to
try and balance my whole set up (while it's cooking) and turn it or I
have to constantly sit in front of it and try to block the wind with my
body, or whatever I can find. Also, even if the wind is blowing against
the closed side of the windscreen there is still a large enough space
between the top of the windscreen and the bottom of the pot in which the
wind can easily blow through and steal away the heat from the stove.
However, I cannot say that the wind has ever blown the flame on the
stove out though, with or without the windscreen. (***Again, see note
below on gap width between bottom of pot and top of windscreen.)
However, just by sheer design, I understand that some wind is being
directed away from my heat source (stove) as a result of this
windscreen. Also, by design, I can see how some of the heat will be
reflected back up towards the bottom of the pot due to the cup-like
shape at the bottom of the windscreen. With this in mind, I believe that
my stove, in conjunction with the windscreen, is working at least
somewhat more efficiently than if the stove were operating on it's own.
Can I tell the difference whether by boil times or by fuel savings? No.
I have always used this windscreen while I am cooking, even if it feels
like there is no wind.
So, at a weight of 2.3 oz (65 g) and with the ability to store the
windscreen right around my fuel canister (which happens to go inside my
cook pot along with my bowls, cups, lighter, and stove) I have no reason
not to carry it, and for that matter use it. Since I am not 100 % sold
on the fact that the windscreen works as well as I would like it to, I
take other measures when preparing my food, such as finding a place that
isn't as windy to cook or even trying to wait a little while for the
wind to die down some before cooking, to help maximize the overall
efficiency of my stove. I do plan on playing around with some other
ideas to help improve the performance of this windscreen, but for now I
will continue to carry it the way it is.
On a good note, I have not had to provide any type of maintenance to the
windscreen. It is a very easy piece of gear to own. It does not get in
the way and it makes for a good conversation piece when brought out. On
a little more serious note, since the windscreen attaches at the lip of
the canister, it separates the canister from the stove. Another way to
put this is, the windscreen separates the flame from the potentially
explosive canister. While the canister is still able to absorb some of
the heat coming from the stove, the windscreen actually creates a
partial barrier which reflects some of the heat back up towards the pot,
limiting the amount of heat that actually reaches the canister.
So, while there are definitely slightly lighter, and much cheaper
(homemade) windscreens out there to be had, I have this one, the Primus
Windscreen. Now that I have it I will use it, but if I ever come across
something else more adequate I will probably go with that. It is hard
for me to say if I would recommend this windscreen or not, as its pros
and cons are pretty close. I will just have to let my report speak for
A Product Safety Information (PSI) sheet regarding this windscreen has
been recently released from Primus. Since this windscreen has been on
sale, according to the website, and even printed directly on the box the
windscreen came packaged in, was this: "This windscreen fits Primus
ExpressStove, Primus MicronStove Ti and most other cartridge
stoves." This is now considered wrong according to Primus. The PSI
now states that the minimum distance between the top of the windscreen
and the bottom of the cook pot MUST be at least 0.5 in (11 mm) and MUST
have a flame that is directed upwards to the pot and not out towards the
windscreen. For this reason, the Primus MicronStove Ti was removed from
the list of stoves that this windscreen is compatible with. Also, at the
moment the windscreen has been removed from the shelves and is being
repackaged with the up-to-date information and is also now being
packaged with a small instruction booklet. The website has also been
updated to reflect this new information.
THINGS I LIKE
1. It packs away small and easy.
2. It's simple to use.
3. It fits with my fuel canisters and stove.
4. It keeps the canister from overheating.
5. While not the lightest, it is pretty light.
THINGS I DON'T LIKE
1. One complete side of the windscreen is left open to wind.
2. Wind can easily seep between the top of the windscreen and the bottom
of the pot.
3. It's costly.
<<IMAGE GOES HERE. ALT TEXT = "IMAGE 4">>
This report was created with the BGT Report Generator.
Copyright 2010. All rights reserved.
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