Trail Designs Caldera Cone
and 12-10
Stove
|
Caldera Cone in
Caddy
|
Test Series by Jamie
Lawrence
Field
Report - 13th June 2011
Tester
Information
Name:
|
Jamie Lawrence
|
Email:
|
jlawrence286
(at) gmail.com
|
Age:
|
29
|
Location:
|
Hobart
Tasmania, AUSTRALIA
|
Gender:
|
Male
|
Height:
|
1.70 m (5' 7")
|
Weight:
|
70 kg (154
lbs)
|
I
was introduced to backpacking/tramping/hiking as a young child in Boy
Scouts
and through my school physical/adventure education. After leaving
school, I
mainly did short daywalks
until recently when I
started to re-walk some of Tasmania's key routes and try others I have
yet to
attempt. I mainly walk in the winter months, in Tasmania's central
highlands
area. I prefer light gear, extended walks (3-5 days) in a group of 3
people, or
shorter walks (1-3 days) walking solo. I generally carry a base weight
pack of
around 8 kg - 10 kg (17 lbs - 22 lbs).
Initial
Report
16th
March 2011
Product Information &
Specification
Manufacturer:
|
Trail Designs
|
Year of
Manufacture:
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2011
|
Manufacturer's
Website:
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http://www.traildesigns.com
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MSRP:
|
US$134.96
|
Listed
Weight:
|
Caldera Cone:
28 - 78 g (0.9 - 2.5 oz)
12-10 Stove:
16 g (0.5 oz)
Fuel Bottle:
20 g (0.64 oz)
|
Measured
Weight:
|
Caldera Cone:
40 g (1.2 oz)
12-10 Stove:
16 g (0.5 oz)
Fuel Bottle: 24 g (0.77 oz)
All packed in Caddy: 140 g (4.5 oz)
|
|
|
The Trail Designs Caldera Cone
and
12-10 stove system is a denatured alcohol (called methylated
spirits in Australia) burning stove that is, to be honest,
extremely
simple and ultra lightweight. The 12-10 stove (burner) is effectively a
well
made 'soda can' stove, whilst the Caldera Cone is a specially designed
windshield that acts as a pot stand and is formed by a single,
specifically
cut, piece of aluminum that when set up,
forms a cone
shape.
On their website Trail Designs outline that each Caldera Cone is
specifically
optimized for the specific pot. To this extent the distance between the
base of
the pot and the 12-10 burner is specially matched to ensure the maximum
heat
capture and efficiency from the burner. In this test series my Caldera
Cone is
matched with the Open Country 3 cup non-stick pot. The Caldera Cone,
12-10
burner, fuel bottle and measuring cup all tuck away into the Caddy, a
large
plastic container around the same size as a 1 Liter
water bottle. In my case there is also enough space for a set of pot
grips.
Trail Designs state that as an added bonus (to save weight) the Caddy
is made
from food grade plastic so could be used as a bowl or cup. However my
view is
that the plastic is extremely thin and would not only be quite hard to
eat out
of given the long slender shape, would also be very hot in my hand and
not
insulate my food, meaning it would get cold very quickly.
Initial Impressions
When
I first received the Caldera system all packaged up in the Caddy I was
immediately impressed by just how light the unit was. The other thing
that
surprised me was just how simple, yet well designed, the Caldera Cone
and 12-10
burner really is. In essence, a simple flat piece of aluminum
with a few air vents punched out and a simple dove-tail shaped join on
each end
which allow the forming of the cone shape. Whilst simple, it really is
a nice
looking piece of gear that has clearly been well crafted as all edges
seem
quite round and not overly sharp. The same is true with the 12-10
burner, which
is in essence the base of a soda can with a smaller inner can, with air
vents
and an integrated primer pan. Whilst being made from recycled
materials, the
burner feels really well built and I have no idea how it is held
together as
there is no obvious welding or glue.
My past experience with burning metho in a
stove has
been slow slow slow!
My
much loved Trangia (which I've had for
many many years) is fantastic but slow and
useless in cold
weather. One ill fated trip saw me putting a freezing cold burner in my
sleeping bag and lighting a candle to desperately try to warm the
burner and
fuel enough to light in around -8 C (17 F) to have a warm drink. Nearly
40
minutes later I had warmth and water.... Not pleasant! With this in
mind my
other initial impression of this Caldera system is that of healthy skepticism as I found the claims of boiling
times of around
5 minutes with as little as 15 ml (0.5 oz) fuel for 2 cups of water
just a bit
hard to believe.
Instructions, Set-up &
Use
There
are 2 tiny paper instructions included, one for the Caldera Cone and
one for
the 12-10 burner. The overwhelming theme of both documents is
that of
extreme caution! There are many warnings in relation to sharp edges,
heat of
the unit and use in a confined space. So much so that the 12-10 burner
comes
with a caveat on it forcing the purchaser to accept the Hold
Harmless
Agreement where-by Trail Designs ask the purchaser to indemnify
basically
everybody (seller, distributer and manufacturer) from any loss or
otherwise
resulting from the use of the 12-10 burner. This agreement forms large potion of the instructions for the burner and
clearly
states that if the purchaser is not happy to accept this agreement,
they should
immediately return the unopened product for a refund. Whilst my
knowledge of
American law is not great, my detailed understanding of Australian law
had me a
little alarmed and wondering just how binding this agreement could be.
I'll let
the Courts figure that out and I will simply get on with enjoying the
wilderness.
The instructions are very easy to follow. In the case of the Caldera
Cone,
they're dead simple. Join the 2 dove tail ends and presto, ready to
use! In
relation to the 12-10 burner, the instructions outline that around
10-15 ml of
fuel should be enough to boil 2 cups of water. The instructions state
that no
more than 40 ml (1.35 fl oz) of fuel should be added. Having used
alcohol
burners in the past, I am all too aware that they can appear to be
unlit
initially as the flame is very hard to see, especially in bright
daylight. This
is highlighted in the instructions when saying that using the stove in
colder
conditions may require some priming by placing around 15-20 drops of
fuel in
the primmer pan which should then ignite the fuel in the center
of the burner. The instructions say if in doubt, hold your hand around
8-12 in
(20-30 cm) above the burner and then slowly lower your hand. If it does
not get
hot, relight. Pretty simple really.
Set up is simple, place the desired amount of fuel in the middle of the
12-10
burner, place the cone over the top so the
burner is
in the center then light. Wait around 20
seconds for
'full flame' then place the pot in the top of the cone.... too easy!
Initial Use
I
was pretty excited to grab some matches and start playing.
Unfortunately I was
surprised to find I didn't have any methylated
spirits at home! Clearly it has been a while since I've camped with a metho stove. A quick trip to the shop and I was
armed and
ready. Whilst the instructions state that 10-15 ml of fuel is enough to
bring 2
cups of water to a boil, there was no indication of time. I decided to
simply
place 10 ml (0.33 fl oz) of fuel in the 12-10 burner and light it to
see how
long it would burn. I placed the burner on the back step of my house on
a
lovely warm sunny day when it was around 24 C (75 F) with no wind. For
my first
burn I did not use the Caldera Cone.
It was pretty clear when the burner was lit, as there is a satisfying
'whoop'
noise when the metho ignites! I was highly
surprised
to record a burn time of around 7 minutes! For my second test I added 2
cups of
water to my pot, added 10 ml more fuel to see if it would boil. My
second burn
only lasted for 4:32 minutes and was not long enough to boil the water.
I waited
for the burner to cool a little, added 10 ml more fuel and relight. The
pot of
water boiled after 1:15 minutes of the second burn. I worked out this
is
roughly 5-6 minutes to boil 2 cups of water..... not
bad! More specifically, the claim of around 15 ml (0.5 fl oz) of fuel
seems
accurate... I am impressed!
My second burn lasted for 3:35 minutes. I then again waited for the
burner to
cool, added another 10 ml (0.33 fl oz) of fuel and lit without the pot,
simply
to see how long the fuel would burn. Again I achieved around 4 minutes.
Based
on this, I suspect I may have added slightly more fuel on my first
burning,
closer to 15 ml (0.5 fl oz) given the much longer burn time.
|
|
The 12-10 Burner lit inside the Caldera Cone
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Full Rolling Boil!
|
Summary
After my quick initial test
of the
Caldera Cone with the 12-10 stove, I am a little impressed! It
certainly seems
possible that this simple lightweight system is capable of boiling
water with
the use of very little fuel, suggesting that I can indeed carry a lot
less
fuel. A genuine saving in weight all round. My only concerns are the
complete
lack of heat output control, once lit, it
is full heat
or nothing. The other is the fact that I must use the Open Country pot
as this
is integrated for my Caldera Cone. It is quite a small pot which may
only be
suitable for solo cooking, or boiling water to rehydrate food. I guess
now I
throw this nifty unit into my pack, head off and start testing!
This concluded my Initial Report of the Trail Designs Caldera Cone with
the
12-10 stove. Please check back in June for the result of
my field testing. My thanks to Trail
Designs and
www.backpackgeartest.org
for the
opportunity to test this product.
Field
Report
13th
June 2011
Field Locations and
Conditions
I have used the Caldera
Cone and
12-10 Stove on 2 separate outings to date. The first of these was a 5
day back
country trip based from the Labyrinth, deep in the Tasmanian central
highlands.
The second trip was an extended day walk to the Tarn Shelf in the Mt
Field
national park, round 80 km (50 mi) from my home in Hobart.
The Labyrinth - This walk was intended to be a back country outing to a
remote
alpine lake for us to enjoy some rare photography opportunities. Alas!
We experienced
all sorts of weather ranging from pouring rain (and snow) and gale
force winds
to perfect sunshine and breathtaking sunsets. Over the 5 days our
elevation
ranged from around 700 m (2,296 ft) to around 1,300 m (4,265 ft) and
weather
ranged from below freezing to sunny clear skys
of
around 15 C (59 F). As mentioned we had a couple of days of pouring
rain, hail
and snow but I am not sure how much fell. The closest weather station
was at
Lake St Clair, around 20 km away and they recorded around 250 mm (9.8
in) in
one 24 hour period, which gives an idea of just how wet it was! All our
camping
was tent based in exposed sites, except for 1 night where we camped
near a
walkers hut in a pine forest.
Tarn Shelf - This walk was a day walk of about 6 hours in the M Field
National
Park, my favourite park close to home. The walk starts at a lake at
1,034 m
(3,392 ft) and climbs steeply onto an exposed alpine tarn at 1,160 m
(3,805 ft)
where there are lovely lakes and tarns and is a very popular day
walking destination.
Unfortunately for me, the weather was absolutely foul and after about
2.5 hours
of being blasted by icy winds and more hail and rain, we turned around
having
seen very little. There is a large cabin on the track which made for a
good
spot to stop, warm up with a bite to eat and a hot drink.
Performance in the Field
I
intended to use the Caldera Cone with the 12-10 Stove as my primary
cooking
system for the Labyrinth walking trip but I was in a group of 4 and the
stove
was simply not big enough for this purpose. It therefore became part of
our
'camp kitchen' and given the horrid weather conditions, actually came
in quite
handy as a primary stove for heating water or cooking small portions of
food
such as oats for breakfast. In this regard the system performed
excellently.
Instead our primary cooking stoves were 2 MSR Whisperlite
stoves. Despite being concerned with my pack weight (this was my first
major
back country walk since major knee surgery late in 2010) I was not
concerned
with carrying the Caldera as it is very lightweight and takes up about
the same
amount of room in my pack as a 1 Liter
water bottle
(excluding the small pot).
For around 18 hours of the trip we were tent bound as the wet weather
and
extremely poor viability made it unsafe for us to continue for the
rough off
track section we had planned to walk. We were able to find a rough,
although
waterlogged camp site and set about getting dry and warm after many
hours of
being wet and cold. After setting up my tent and getting some gear
sorted, my
thoughts turned to a hot drink. Immediately I had a problem, I was not
comfortable using the Whisperlite in my
tent
vestibule as I was concerned mainly about the risk of igniting the tent
whilst
priming the stove and also concerned about the carbon monoxide gas
emitted
during the burning of the shelite (white
spirit).
Lucky for me I had enough foresight to have already stashed the Caldera
Cone in
the tent vestibule.
Under these conditions, the Caldera Cone was perfect for what I wanted
to do,
which was boil around 500 ml (17 fl oz) of water for a drink for myself
and my
tent mate. The ground was not perfectly flat, in fact it was alpine
grasses
that I had set up the tent on, so I was a little concerned about the
stability
of the system. I was not too concerned about scorching or burning the
ground as
it was saturated from the several days of rain. Despite the
system having
got full of water in the 15 minutes or so I was fiddling around with my
tent
and gear, I was easily able to set it up, get it lit and boil more than
enough
water for the 2 of us to enjoy a hot soup in our sleeping bags.
I had to repeat this process a couple of times during the afternoon,
evening
and following morning as the weather did not abate to allow comfortable
cooking
out of the tent. On each occasion I would assemble the cone and place
the pot
in the top and then set aside. I would then add around 30 ml (1 fl oz)
of fuel
to the 12-10 stove and get it settled and stable on the ground. Once
satisfied
it was not going to topple over, I would light the stove. While the
stove was
heating, I would add a small amount of water (around 200 ml/6.7 fl oz)
to the
pot, then position the cone over the stove
to get it
stable. I would then carefully add the
remaining
water to make up 1 L and then give a final check that the now fully
weighted
cone was stable. After this I would place the pot lid on, simply sit
back and
wait for the sound of the pot when it started to boil. After my initial
uses I
was a little concerned that the stove would go out as it makes no noise
whilst
in use but I have never had the stove go out until it has burnt all the
fuel.
Each time I used around 30 ml (1 fl oz) of fuel and the system never
failed to
boil 500 ml (17 oz) of water within around 5-8 minutes.
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|
Caldera Cone set up in Tent
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High Camp in the Labyrinth
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There was only 1 issue I experienced using the system and that was
during our
Labyrinth trip when the weather changed from rain to freezing nights. I
was up
at around 6 am to take some photos of the sun rising and awoke to a
completely
frozen tent and campsite that was heavily frosted with small traces of
snow. I
was not able to light the 12-10 stove, even with using the priming pan
as the
fuel was simply too cold and the stove it self
was
close to frozen. However I was easily able to warm the stove by placing
it in
the pocket of my down jacket for about 10 minutes which warmed the thin
metal.
Once I had done this, I was easily able to light the stove, but on this
occasion I added an extra 10 ml (0.33 fl oz) of fuel to be sure that I
had
enough heat to boil the now close to freezing water and pot. Again, the
stove
worked well and boiled my water. I suspect the temps were at the limit
of the
Caldera System and I certainly wouldn't be comfortable relying on it in
regular
freezing conditions or for snow melting.
I used nearly a full bottle of fuel during the 5 day outing, but this
would not
be an accurate indication of the fuel usage, as previously outlined, I
did not
use the Caldera as my primary stove. I also did appear to have some
issues with
fuel leakage, see below. Despite this, I am comfortable in coming to
the
conclusion that the 12-10 stove is very fuel efficient and represents
good
value for weight.
I had a similar issue during my walk in Mt Field, in where the stove
was
extremely cold to touch when I initially went to use it. Again I was
easily
able to warm the metal with my hands and jacket pocket and got a nice
pot of
boiling water for some warm pasta for lunch which looked much better
than my
walking buddies some what damp sandwiches!
I would
not normally carry a fuel stove with me on day outings as I find them
simply
too heavy and I like to carry as little gear as possible with me.
However as
the Caldera is so light, I am not as fussed, especially given I knew
the
weather would be cold and wet (but not as bad as it actually was!), I
knew a
warm drink would be nice.
The only other issue I had during both trips was that with the small
fuel
bottle leaking fuel. After the first day of walking in my Labrynith
trip I opened my pack as I had the caddy and pot stored towards the top
of my
pack, I was alarmed at the smell of fuel I got upon opening my pack to
set up
camp. I have had fuel leak a few times in the past and absolutely hate
it!
However, I was surprised by the fact that the caddy appeared to be dry
and
there was no noticeable 'damp' around where it was stored. I opened the
top and
found the inside was wet but that the fuel bottle still appeared to be
very
full, with less than 10 ml (0.33 fl oz) having leaked. This again
happened on
my outing to Mt Field but not as much fuel leaked. I am unsure if the
bottle is
faulty or has a tiny pin prick sized hole as I couldn't get the bottle
to leak
at home by shaking it or squeezing it. Watch this space....
Summary
Overall my field testing so
far has
been enjoyable and has given me a new faith in metho
(alcohol) stoves. I continue to find the cone system easy to use,
extremely
lightweight and tough. After a quick wash at home after my 2 outings,
the
system is still all shinny and looks like new. The only exception would
be that
there is a brown residue inside the 12-10 stove from the fuel. I can not see any reduced performance resulting
from this and
plan to watch it closely in my upcoming usage.
This concludes my Field Report of the Caldera Cone with 12-10 Stove.
Please
check back in August for the results of my long-term testing and final
summary
of this products performance.
Again my thanks to Trail Designs and www.backpackgeartest.org
for the
opportunity to test this neat product.
Long-Term
Report
6th
August 2011
Field Locations &
Conditions
My
final phase testing of the Caldera Cone and 12-10 stove did not go as
planned
with 2 trips canceled due to extremely
poor weather.
I did however manage to squeeze in a quick cross-country ski trip to Mt
Field,
in which I packed stove to allow me to prepare a hot lunch or drink
whist out
carving up the slopes. After 2 weeks of beautiful cool weather and blue
skies I
was blessed with warming weather, melting snow and pouring rain later
in the
afternoon, cutting the trip short. When we set out the temp was around
3 C (37
F) but by the time I had returned to the car, it was closer to 7 C (44
F) and I
had spent around an hour walking off the mountain in strong winds and
rain. I
am not sure how windy it was or how much rain fell, but it wasn't nice!
Performance in the Field
As
outlined in my Field Report, I did not ever expect that the stove was
designed
for or suitable for use above the snow line. I decided to actually put
this to
the test on my XC ski outing by seeing if the 12-10 burner would burn
long
enough to not only melt snow, but bring the water to a boil for use
with my
lunch. The instructions clearly say not to pour more than 40 ml (1.35
oz) of
fuel into the burner at any one time. This to me suggested that this
was the
maximum burn time I could safely achieve without doing either damage to
the
burner or creating a risk.
Snow
melting is a time consuming and in some instances fuel intensive
activity. I am
not usually in the habit of melting snow for water as I am usually able
to find
flowing water that makes the need to melt snow redundant. However, in
this
instance I was not able to find any running water close to the hut. I
decided to
cook lunch in as the lake it was next to was frozen over and I wasn't
keen to
venture out onto the ice to check. I was told years ago that adding a
small
amount of water to the bottom of the pot then adding snow prevents the
coating
of the pan overheating whilst the snow starts to melt. My buddy had a
small
dash of water left in his drink bottle so with the promise of a hot
drink I stole
it off him added just enough to cover the bottom of the pot. I then
added a
heap of
snow, lit the 12-10 stove and sat back waiting to see if the 40 ml
(1.35 oz)
fuel would be enough to melt the snow, and boil the water.
|
Snow Melting with the Caldera Cone
|
I was not only surprised, but impressed that the stove was able to melt
the
snow and boil around 400 ml (13.5 oz) of water which was enough for
some hot
soup for both of us for lunch. However, it was slow! This whole process
took
roughly 15 to 20 minutes and I did have to add an extra 10 ml (0.3 oz)
of fuel
to completely finish boiling the water. Given it was close to freezing
inside
the small hut, I felt this was impressive for this particular stove as
I have
always thought cold temps were well outside the comfort zone of this
product.
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|
Residue Inside Burner
|
Residue Around Burner
|
Throughout my testing I experienced no issues with this system failing
or
looking like it is wearing out. In fact the only signs
of use
is the accumulation of a brown residue inside the burner. This
does not
appear to have affected the stove in any way beyond looking a bit used.
My
priority for gear is dependency not looking shinny and new so no issues
here
for me.
The Final Summary
My testing of the Caldera
Cone &
12-10 stove has been rewarding and somewhat surprising. Ever since my
first use
of this stove in my backyard when preparing my Initial Report, I was
impressed
by the simplicity of the set-up and the efficiency of the cone to
ensure that what
little fuel is burnt, the heat is directed to the pot. Despite this, I
am a
little confused as to where this system fits into my gear list.
Each Caldera Cone is specifically designed to fit the specific pot it
is used
with, in effect making it useless with any other piece of cookware. I
didn't
even bother trying to test other cookware as I decided it was simply
too
dangerous as the cone supports the pot supplied but any other pot
would
have to balance on top, with less support and greater distance from the
burner,
which I assume would dramatically reduce the efficiency of the burner.
The
set-up I have been testing has a 500ml pot, great for 1 person, but too
small
to be fully useful for 2 or more people if wanting to do more than boil
water.
So if I were using this as a solo cook set, the fact that I must store
the cone
and burner separately from the pot takes up more room in my pack. I
have seen
many solo walkers simply use a metal cup and small gas stove which is
not only
small and light, but relatively smaller than the Caldera Cone when
stored in
the caddy.
The ultimate improvement to this system would be additional flexibility
to use
alternative cookware, especially a larger pot suitable for group
cooking. This
could be possible by changes to the joining mechanism to bring the cone
ends
together, having multiple points to allow for the different size pots.
Even if
it was 1 or 2 pots (say 1 litre and 2 litre)
just to
give a bit more flexibility. If this were the case, I imagine I'd buy
one in an
instant.
Despite this, I can see I will continue to use the Caldera Cone &
12-10
stove for many years to come. Firstly, I just can't see how it will
wear out
anytime soon and the metho (alcohol) fuel
is quite
cheap and the stove is really efficient so I can keep a small bottle in
the
cupboard and just grab the stove and head off any time without concerns
of
needing to service the burner or buy a canister of gas. I like this
flexibility. But the major reason I will most likely continue to use
this stove
into the future is the fact that it is almost silent when in use and
although
not as fast as my other stoves, the extra time actually allows me the
opportunity to sit and enjoy the beauty of the environment I am in and
at the
end of the day, that's why I headed there in the first place!
This concludes my test series of the Caldera Cone & 12-10 stove. My
final
thanks to Trail Designs and www.backpackgeartest.org
for the opportunity to test this product. I have thoroughly enjoyed
using it
and look forward to doing so well into the future.