Sea To Summit Second Arrow (Siliconised Fly)
- Tapered Tunnel, 5-season, 2-Person tent.
- Outer-Pitch-First / Integral Pitch
- Min Wt 2.28 kg
- Packed Wt 2.57 kg
- Inner Tent Length: 2020mm
- Outer Tent Fabric: 40d ripstop polyester, silicone elastomer face, tape-sealed, 2000mm PU back coating.
- Outer Tent Colour: Eucalyptus Green OR Gold.
- Inner Tent: Grey 40d air-permeable ripstop nylon, Black 20d nylon mesh door screens.
- Floor: Deep, suspended tub, 100d nylon with massive 8,000mm PU coating.
- Poles: Scandium Air Hercules FC, fully field maintainable.
- Pegs: 7 x 4-Flute HT Aluminium, with pull cords.
| Style | Packed Weight | Min Weight |
|---|---|---|
| Standard Fly | 2.80 kilograms | 2.55 kilograms |
| Siliconised Fly | 2.40 kilograms | 2.15 kilograms |
Second Arrow
The SECOND ARROW design follows the classic tapered-tunnel, 3-arch First Arrow model. None of the functional advantages or design details of the First Arrow have been lost in scaling down to the SECOND ARROW model. Our design objective was to absolutely minimise weight without compromising the tent's 2-person status.
The choice of high-tenacity, 40d polyester ripstop with silicone elastomer face coating and supple PU back coating gives the outer tent the best possible performance and durability, all at reduced weight. Water repellency, snow shedding and UV resistance are all improved with this fabric. Contrary to what might be expected, this lighter-weight fabric option presents no compromise to the life-expectancy of a properly cared for and maintained tent. Choose this outer if every gram counts or extended use in alpine environments is on the cards.
Size
The SECOND ARROW inner tent has good shoulder width for two people and just sufficient length for one occupant up to 190cm tall if the other is no taller than 175cm. (It's a matter of room at the foot and there is no harm in running sleeping pads up the side wall at the foot of the inner tent). The drawings show the main dimensions of the tent, including vestibule space. To make full use of the compact inner tent space it is important to peg this tent out lengthwise at maximum tension. If you do lie in the inner to check its length, remember, you never actually sleep stiff as a board and when you do stretch every now and again the inner tent can easily distort. The vestibule on the Second Arrow has adequate room for storing footwear, miscellaneous equipment and cooking gear. We generally stow empty packs outside this tent, tied to skis or a tree in high winds.
Architecture
The tapered tunnel shape with its low entry
point and sharp 'cut-off' at the high end give the tent an excellent
natural stability in high wind coming from or oblique to the small end
direction. You will see this low resistance profile in nature where
wind is a constant environmental agent, in sand dunes, snow drifts and
water waves. Besides great aerodynamics it has other nice consequences
when applied to tent design.
The large arch provides working
room exactly where it's needed. The tapering shape minimises volume
and outer skin surface area, so heat loss and weight are also
minimised. The adjustable Second Arrow vent opening, formed by
unzipping the vestibule panel down from the top of the main arch, is
carefully matched to the eave shape so that ventilation can continue
even during steady rain or snowfall. This simple vent provides the best
possible still air convective ventilation and a direct exhaust path for
cooking vapours rising from the vestibule. Even at low wind speeds the
low pressure created over the main vestibule positively sucks air
through the tent. In other tents their upper region must flood with
warm moist air before the vents start to work.
In scaling the
three-pole First Arrow shape to this two-pole model long spans of
unsupported fabric need to be avoided. The distance between the top
points of the Second Arrow poles arches is at the limit for a
tent intended to resist high winds. The Second Arrow can not be
lengthened! The precise tilts given to the poles arches are there
to equalise fabric tension over the outer skin (see the side view). The
Second Arrow has the same wonderful door arrangement and direct access
as the First Arrow. Gear stowed under the vestibule does not hinder
movement in and out of this tent. The outer door flaps protect the
inner well while entering or leaving the tent in rain.
The Second Arrow Outer Tent In Use
Access into the tent
(depicted by the red arrows in the top vew) is provided both sides of
the main pole arch. It is possible to crawl in and out of the small end
but openings there are mainly for ventilation. Gear stowed out of the
way in the main vestibule is immediately on hand from the inner tent.
No need to fall over packs, boots and cooking gear to get in and out.
Snow for melting can be stockpiled immediately beside the outer at
either entrance. Once you've enjoyed these features other designs don't
have much appeal.
Both ends of the outer and inner tents can be
unzipped for full ventilation and views. If you wish you can lie in the
tent looking out at the stars, the vestibule canopies simply unzip all
the way down from the top to lie as a cover over your gear. The zips
around the main and small arches are protected by tensioned eaves and
are many times stronger than the fabric panels they join to.
Just three
pegs are needed to pitch the tent. Six more will fully guy the tent and
once in place give the tent a unique combination of stability and
energy absorbing flexibility. This built-in flexibility of tunnel tents
is crucial to resisting the strongest winds. Rigid frameworks can reach
a point of explosive stress. As a result of perfecting the important
details of the outer and inner tents it is not possible to simply erect
the inner tent on its own. This can only be done with a spiderweb of
guys and straps.
Inner Tent Features
Both ends of the inner tent have fully
zipped door panels and mesh screens. You can unzip just the screen
covers or the entire door panel depending on requirements for
ventilation, access to equipment, and so on. The whole wrap-around
inner tent front door assembly can be zipped off to either side for
open access to the equipment and cooking gear stowed in the vestibule.
You can then also easily detach the front end of the
floor-pan from the outer tent attachments and pull it back to clear
extra ground space for cooking or packing up in bad weather. The inner
tent is provided with a lengthwise hanging line and side wall pockets.
Being
suspended by shockcord loops, the inner skin tension is maintained
through changing weather conditions. The angular inner canopy shape
results in the best possible, unobstructed clearance and airflow
between the two skins of the tent yet there is little compromise to
useful inner tent space. You have the option to leave the inner tent
attached to the outer tent so it all goes up and comes down as one
unit. Otherwise the shockcord loop attachments between the two layers
simply unclip from the small, nylon, captive hooks under the outer skin
so the tent layers can be packed and carried separately.
Light Weight Shelters |
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