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Reviews > Shelters > Tents > Big Sky Products Summit Evolution 1P > Andrew Priest > Field Report

Big Sky products evolution 1p
Field Report
May 2, 2006

Big Sky Products Evolution 1P at Gordon Inlet

Evolution 1P pitched behind the sand dunes, Gordon Inlet, Fitzgerald River National Park

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 104 kg (229 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
Field Report:

Having used the Evolution 1P for seven nights, I am a happy chappie. Sure I have my bug points, but the good points outweigh the bugs as I see it. I like this tent, I feel good about taking it with me in my backpack, I sleep well in it.  Well done Big Sky Products.

Testing during the field phase of this test has been limited to seven nights in the Fitzgerald River National Park. A night or two less than what I hoped.  The Evolution 1P was used on the seven nights in a walk of the Fitzgerald River National Park from Four Mile Beach to Quaalup Homestead from April 14 - 20, 2006. During this walk varying camping conditions where experienced from car-camping hard packed camping sites at Four Miles Beach to numerous nights on sand, including one night just above the high water mark at Twin Bays, to freestanding on a concrete floor at Point Ann day area.

Other than two nights where some light rain was experienced, the weather was fine, but often quite windy, with winds coming in off the Southern Ocean.  On more than one night I was frustrated that I did not have the full set of titanium pegs and guy reports that normally come with this tent, as the wind did buff the tent around a bit.

I did not experience any evidence of condensation in the tent. This may have been in part because of the windy nights encountered or of course the design of the tent. Hopefully condensation conditions will be experienced in the long-term testing phase and I will be able to report more conclusively on how the Evolution 1P handles such conditions.

I had one significant problem with the tent in that I managed to break, maybe that is a too stronger word, I managed to split one piece, of one of the carbon poles. I wouldn't say this was a design issue, rather more reflective of myself not being as careful as I should have been. It happened at Twin Bays, we had, had a long day of walking, with a good part of the afternoon spent of climbing in and out of gullies of thick scrub, we had come off the ridge (took two attempts to find a viable route down) hitting the beach as darkness fell, leaving the group facing some rock scrambling and hoping to find an old abalone hut and water tank whose actual location was unknown.  When we gave up looking in the dark for the hut, I was down to 500 ml (17 fl oz) of water, tired and hungry.  The only camping spot at that point was just above the high-water mark. All up not a good time to put up a tent, but up it had to go up.

I made my first mistake early into the pitch, putting in one pole and tensioning it in place by inserting each end into its grommet. This had the effect of putting tension on the whole tent. When I was putting the second pole together before inserting it into the sleeve, I had trouble putting two sections together. At the time I put this down to a bit of sand or grit in the pole, didn't really pause and engage brain, instead I forced the sections together. I then went to insert the assembled pole into its sleeve. With the other pole already tensioned, it just wasn't going into too well, and bingo it went crack. Tired and hungry I just said stuff it, finished putting the tent up, got into my sleeping bag and hoped the wind wouldn't to be bad. Don't think it was, I just went out like a light!  Next morning I took a close look at the pole; I had a small crack in one sleeve, about 2.5 cm (1 in), but it seemed to be holding together okay, so I didn't apply any tape or other repairs. In fact I continued to use the pole for the rest of the walk, another three nights, without issue.  Lesson learnt? Put both poles into their sleeves before the final tensioning into the grommets!

One feature of Evolution 1P that I had high hopes about is its ability to be pitch it as a combination, i.e., inner and outer together. As mentioned in my Initial Report, "one can use the hook and loop fasteners found on the inner and fly 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."

This sounds simple, the concept seems like a good idea. I tried and tried the pitching together, in fact I did it every night over the walk. I would say that at the end of the walk, I am sort of getting the hang of it, but find it a fiddle and frustrating process as the fly and inner don't match together at enough points, meaning that often they have got tangled or it is hard to locate and push or pull out the poles. Also the slipperiness of the Silnylon fly does not help.  I still think the concept is a good idea and expect I will get the hang of it, but at present it is frustrating.

My only other serious negative with the tent is that I found the door location and size less than ideal. I would like to see the small gear pocket, currently on the opening side of the inner moved to the opposite wall of the inner and the door enlarged by about 10 cm (4") by bringing the door opening forward towards the wide end of the tent.  At present I found myself catching and often pulling out the peg that holds the vestibule at the zip end. That is the doorway is partly obscured by the vestibule. Moving/enlarging the opening would allow exit/entry further forward avoiding the vestibule fly. This would also make it better to lay in the tent looking out through the doorway if one so desires. This change also keeps the very useful gear pocket and the useful clothes drying pocket. All up, a small change which would significantly enhance the tents functionality in my view. 

To summarise my experiences in the Field and to comment on other aspects of the Evolution IP, I refer back to my test plan as outlined in my Initial Report.

  • Ability of the tent to provide shelter in three season weather conditions, particularly during winter here in Western Australia.

  • Stability of the tent in varying weather conditions.

As alluded to early in this report I have not experienced much in the way of rain, but I have experienced some windy nights indeed. Windy enough to keep me awake with the flapping of the tent. Ideally I would liked to have guyed out the tent on these windy nights but have yet to receive the guy ropes and titanium pegs. My experience therefore is reflective of a less than ideal pitch. All that said, other than some excessive flapping of the tent I have been happy with the performance of the Evolution IP. Hopefully I will experience some more serious weather in the long-term phase allowing me to comment more on the tents performance in less than ideal conditions.

  • Ability of the tent design to minimise condensation.

Due to most nights been windy, I have not experienced any conditions likely to produce condensation so really can't comment on this aspect as yet, other than to say I have not experienced any condensation at all.

  • Airflow in varying weather conditions.

I am happy with the level of airflow that I have been able to get with the tent. In fact on one night I brought the non-vestibule side of the fly in closer to the inner to reduce the air flow as it was getting cold. Yep, I am happy with the airflow levels experienced to date.

  • Ease of pitch and break down in varying weather conditions with a particular focus on the single pitch approach.

As I indicated earlier I find the single pitch approach a bit of a fiddle and a frustrating process as the fly and inner don't match together at enough points, meaning often that they have got tangled or it is hard to locate and push or pull out the poles. Also the slipperiness of the Silnylon fly does not help.  I still think the concept is a good idea and expect I will get the hang of it, but at present it is frustrating. That said I have been happy with the ease of pitching and pull down so far. The tent has not blown away!

  • Functionality of the interior dimensions/shelter design.

Love the space this tent provides. Find it more than sufficient for me. I keep some clothes and bit and pieces in the tent, the balance of my gear stays in my pack or loose under the vestibule. My only negative on this aspect is the size/location of the doorway as discussed above. If the door can be enlarged/moved towards the big end of the tent I would suggest the design is then ideal.

  • Functionality of the vestibule design for storage of gear.

I use the vestibule to store my Granite Gear Stratus Latitude pack and my shoes. I have found it adequate and on the nights it did rain, it provided full protection of my gear.

  • Access to the shelter with gear in the vestibule.

Again no issues. This is where the current door size/location comes into play as it opens widely into the vestibule area, making it easy to access 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.

No signs of wear and tear are evident so far. My only negative here has been my experience with the carbon pole, not a design problem, more of a clumsy gear tester problem. That all said, I do have one bug-bear and that is I find that I always catch the vestibule fly zip rain flap in the zip. Damn annoying on a zipper run in the middle of the night.

So what do I like about the Evolution 1P?

  1. Its light weight;
  2. Smallness of the packaged size;
  3. A stuff sack that is big enough for the tent - what a breath of fresh air, no fighting with tent and stuff sack every morning;
  4. Airflow through the tent;
  5. Drying pocket and gear pocket;
  6. Access to the vestibule from inside the tent;
  7. Interior space;

What do I dislike about the Evolution 1P?

  1. Door opening size/location in terms of getting in and out of the tent;
  2. The ease with which the fly zip catches in the zip flap. Damn annoying on the zipper runs in the night;
  3. No guy ropes to insure a tight pitch on windy nights.

What am I neutral about at this point in the test:

  1. The inner/fly pitch together design. Feel the jury is still out on this. Would like to see more connection points, at least four more to help keep the fly and inner together.

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