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Reviews > Shelters > Tents > Big Sky International Evolution 1P > Andrew Priest > Initial Report

Big Sky products evolution 1p
Initial Report
February 23, 2006

Evolution 1P pitched ... can someone mow the lawn please

Authored by

Andrew Priest
Perth, Western Australia, Australia
aushiker@yahoo.com.au

TABLE OF CONTENTS

Andrew, the tester:

I am a 46 year old male, 180 cm (5' 11") in height, I weigh 106 kg (234 lbs). I have been bushwalking in Western Australia for approximately five years. For the past four years I have been regularly walking and leading on and off-track pack-carries with the Perth Bushwalkers Club and more recently I have also got into geocaching. I consider myself as moving towards being a lightweight tent-carrying bushwalker with my pack base weight in the 8 to 12 kg (18 to 26 lb) range.  In 2003 I completed my End to End of the Bibbulmun Track. I have also thru-hiked the Cape to Cape Track, the Coastal Plains Walk Track (numerous times) and the Larapinta Trail (July 2005).

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Andrew's testing playground:

The bushwalking environment of the south-west of Western Australia allows for bushwalks and backpacking from coastal plains to forest. Elevation ranges from 0 to 585 metres (0 to 1,920 feet). Within this region, I walk in varying conditions from forestry roads, to sandy tracks to single-purpose walking trails, to rock hopping, to beach walking to completely off-track walking through open and dense country.

 

 

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The testing environment:

During the summer period, daytime temperatures average 30° C (86° F), whereas from March through to December the daytime average temperatures range from 15° C to 26° C (59° F to 79° F). During the autumn, winter, and spring periods the normal weather pattern is fairly wet with frequent heavy rainstorms evident. It does not normally snow in Western Australia.

According to The Times Atlas of the World (Concise Edition - Revised 1997) our weather is described as being "Mediterranean - rainy climates with mild winters, coolest month above 0° C (32° F), but below 18° C (64° F); warmest month above 10° C (50° F)." The atlas depicts the coastal area north of Los Angeles as having the same climate.
 

Product Details: The 2006 Big Sky Products Evolution 1P Shelter is a three season free-standing lightweight double wall single person tent with a single entrance.  The rain fly and floor is made of Silnylon. The inner is made of no-see-um mesh. The significant feature of the Evolution 1P is its length, 213 cm (84"). Its peak height is 99 cm (39"). It has a single vestibule on the same side as the entrance to the tent. There is also a small window on the foot end of the tent.  Within the tent has an small pocket on one side and a larger pocket, referred to as a clothes hamper by the manufacturer on the other side.

 

 

 

 

 

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Specifications:
  • Manufacturer's specified weight: The manufacturer gives a weight of 1.02 kg (2lbs 4 oz) for the shelter, fly and carbon poles and 1.16 kg (2lbs 9 oz) for the shelter, fly and aluminium poles.
  • My weight is reported for the configuration that I carry the tent in, i.e., stuff sack, rain fly, inner and poles. At the time of writing the titanium stakes have yet to be shipped. This weight will be adjusted once they are received.
    • With carbon poles - 1.08 kg (2 lbs 6 oz)
    • With aluminium poles - 1.20 kg (2 lbs 10 oz)
  • For those interested or who wish to make up their own combination of components, the individual weights are:
    • Stuff sack - 34 g (1.2 oz)
    • Fly or outer - 370 g (13 oz)
    • Inner - 461 g (1 lb)
    • Aluminium poles - 336 g (12 oz)
    • Carbon poles - 212 g (7.5 oz)
    • Titanium stakes - NA
    • Guy ropes - NA
Item Receipt: As alluded to above I received the Big Sky Products Evolution 1P sans the titanium stakes and guy ropes. With the exception of the positioning of the vent, the shelter came as expected. On the Big Sky Products website a vent is shown above the window at the foot end of the tent. Mine does not have the vent positioned there, rather it is on the vestibule side of the shelter. Mentioning this vent, it also has a neat feature of a stay to prop it open. Quite nifty!

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First Impressions: Two adjectives come to mind immediately in describing this tent ... light and long.  The weight or should I say lack of is very noticeable for me, but then my standard tent (four-season) weighs in at around 2.7 kg (5 lbs 15 oz). The other point is the length of the tent which at 213 cm (84") is quite long in my view.  My initial crawl inside suggests a bit of spare room for gear storage at the foot end should it be needed. My initial impressions are also that the tent is roomy enough to be comfortable and sitting up is just fine. Of course further testing will confirm or otherwise these initial impressions.

The tent is easily put up (my first two attempts have taken around 8 to 9 minutes each time). It has two poles which slide easily into their respective sleeves (numbered in order of installation) before inserting into their grommets.   At this point the inner is now up. The fly is then simply thrown over and the poles are inserted into the grommets at the fly corners. The inner and fly have hook and loop fasteners on the four corners at the guy points. At first I wondered why bother with these hook and loop fasteners, what is the point of these? Well on my second pitch, I smacked my head! My one initial criticism I had of the tent looks likely to be overcome. My criticism was that the tent was inner pitch first. A concept I never understand having been used to my Australian tent which is outer pitch first. But with the Evolution 1P, one can use the hook and loop fasteners to keep the fly and inner together making it possible to pitch the tent in one go and break it down in one go, hopefully keeping the inner dry in wet conditions and of course speeding up the pitch and break down. I will report on my experience with this approach in my Field and Long-term Reports.

As mentioned the tent has four guy points on each pole corner.  The tent also has four corner peg points plus three peg points for tensioning out the fly and vestibule. As the tent is freestanding, it is possible to pitch it without using the pegs but my first impressions suggest the pegs will be needed to tension out the inner.

The fly can be tensioned out on the non-vestibule side providing an air-flow gap between the fly and inner. On the vestibule side of the shelter, two pegs are used to give the vestibule shape and to hold it out from the inner. A single zip is used to create the door in the outer and again a single zip is used to create the doorway in the inner. A storm flap covers the zip in the fly. The flap is also makes use of a hook and loop fastener at the ground end to help hold it in place. All the doors or door flaps can be easily rolled back and held in place by sewn-in hooks.

Storm flap propped open by sewn-in stayAlso on the vestibule side is a small ventilation flap which can be held open with a sewn in stay or closed using the hook and loop fastener sewn in. See photo for a better idea of what I am talking about.

Inside the tent there is a small gadget pocket on one side and a larger pocket on the other side for possibly holding clothes needing drying.

The tent ships with either carbon poles (7.42 mm / 0.292" diameter) or aluminium poles (8.74 mm / 0.344" diameter). The poles are long, reflecting of course the length of the shelter overall.

That pretty much describes the tent in detail.

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Testing Strategy: The testing plan is focused around a number of weekend pack-carries and one longer (approximately seven to eight nights) pack-carry in the Fitzgerald River National Park over the testing period.  The testing will focus on:

  • Ability of the tent to provide shelter in three season weather conditions, particularly during winter here in Western Australia;
  • Ability of the tent design to minimise condensation;
  • Airflow in varying weather conditions;
  • Stability of the tent in varying weather conditions;
  • Ease of pitch and break down in varying weather conditions with a particular focus on the single pitch approach;
  • Functionality of the interior dimensions/shelter design;
  • Functionality of the vestibule design for storage of gear;
  • Access to the shelter with gear in the vestibule;
  • Durability of the floor in varying ground pitch conditions;
  • Durability of the zips, fasteners, fly, inner and poles during the test period

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