t e r r y b n d: A Rant - 'Bombproof tents' or 'How my shelter is better than yours' (when it's not when you think about it)

Tuesday, 15 November 2011

A Rant - 'Bombproof tents' or 'How my shelter is better than yours' (when it's not when you think about it)

19:48 | Posted by terrybnd |

The North Face Tadpole taking in the sun on Crinkle Crags, Lake District

When trying out a new tent, I'll often pitch it with some element of shelter to gauge it's storm worthiness before pushing it somewhere more exposed. Common sense, of course - but it's often those little details we can miss when it comes to the design of a shelter which can prove to be catastrophic for some when camping out on the hills. To others it's a pain in the rear and they just deal with it.

It's about one's mindset I suppose and how we as individuals deal with adverse circumstances when they arise.

I fall into the latter category, though not always by choice. But in this post I'd like to share some experiences and thoughts about tent designs (though not in-depth) and how they tend to cope when setting up home for the night on a summit or moor.

Why? Because sweeping statements and generalisations I read in magazines or online concerning shelters irk me somewhat.

Admittedly, it is a bug bear of mine when I read online about folk having camped in a particular tent and how the winds were "100mph and it stood fine" or "It coped with 80mph winds OK and lived to see another day" and so on. Why is it a bug bear?

First off, often what people perceive to be a given wind speed it's likely to be much less - surprisingly so. They'll have read on weather forecast websites winds of 90mph due or maximum gusts of 100mph and because they were knocked about a bit when walking or struggled to pitch their tent - they consequently believe the wind speeds were as they read elsewhere and pretty much state so as a fact.

I use a Kestrel 3000. A handy gadget for gauging weather conditions out on the hills - it will show you dew point, air temperature, wind chill, wind speeds and more. The military use them and those who are keen on monitoring mother nature in general too.

It will come as no surprise that whatever the weather forecasters suggest, often it transpires to be something completely different. Sometimes for the better or worst. It is a guide after all.

But once you're out in wind speeds in excess of 35mph you'll notice that you'll occasionally lose your footing. You may find yourself leaning into the wind somewhat if it's consistent. About now, many folk will wrongly perceive this to be around the 50mph mark. However, in reality once consistent wind speeds reach 50mph you'll find yourself struggling to walk or stand still most of the time.

And then when speeds hit 70mph? You'll be knocked about, struggle to walk and more.

Take a look at the video below. This shows a Hilleberg Soulo tent being pitched in winds upto 50mph. It's a consistent speed, and unlike the real world per se (as it arrives from one direction only in a controlled environment).

Now, how many of you have pitched a tent in similar conditions to this? Most backpackers I suspect. We hold onto the tent like it's a kite wanting to break free and reach for the heavens, while we kneel on it and peg it down to the ground and take it from there.

In the real world, the wind speed may be gusting stronger from time to time or coming from varying degrees of the compass making the conditions even more difficult.

However, take a look again - the wind speed is upto 50mph. If you were out on the hills pitching in speeds like that, would you come back home and say the winds were 50mph? Honestly? Or would you state they were much more - simply because that's what you perceived them to be?

Now, noting it's stable and strong design you'll have seen it was quite a struggle to pitch and it wasn't exactly rock solid or 'bomber' as some people like to describe it. But it will withstand such wind speeds much better than single hoop designed tent like a Terra Nova Laser Competition. After all, the latter is clearly not meant for use in such conditions - but even so, 50mph doesn't sound much really does it.

Here's another, this time showing the Vaude Power Lizard (single hoop design)...

Different, eh? But the tent still stood. Not ideal by any means - a noisy night maybe the order of the evening, eh? Most will likely reach for some ear plugs.

But how would the Power Lizard have coped in winds in excess of 50mph? Not very well, I suspect. I think we'd all agree we'd much rather be in something like the Hilleberg Soulo.

However, here's some food for thought - due to it's geodesic nature, would the Soulo be the better tent to be in through the night? What if a tent pole snapped or buckled? Would the bent pole have put the tent in some jeopardy (ie, damage the flysheet or cause other poles to fail and so on)? A consequent system failure if you like.

Would the Power Lizard have stood and come out unscathed? Therefore, would you rather have spent the night in that shelter?

Take a look at this video - one of my own from many moons ago. It's from the inside of a Terra Nova Solar Competition in winds around 50mph+

My point being, that even in winds of 50mph things can appear to be much worst. It certainly feels it. After all, we live in a urban world of brick walls, central heating and so on. A breezy day in our everyday world is bad enough - but when out on the hills? It seems to be a hurricane in comparison.

You see, it's about perceptions and what we're used to. Everyone is different, and how we relate to that can vary by many degrees.

Now, here's a cracker of a video from blogger The Muss. He's become a good friend and the poor fella often spends his nights out in storms (not by choice and we joke he's cursed as a result). You'll note in this video he clocks on his Kestrel 3000 a consistent wind speed of just shy of 80mph. Pay attention to the Hilleberg Akto in the background....

So, just in these few clips we can see how differing designs of tents cope in wind speeds up to 50mph and 80mph respectively. In truth, they struggle on many levels and they're not conditions most of us would like to be out in (even then they can occur unexpectedly).

But it goes to show, that it's often not as clear cut as you may think when chasing a bomb proof tent for such conditions.

How easily and quick the shelter can be pitched is the first thing that comes to my mind, closely followed by how well it will withstand high wind speeds.

Where you pitch your tent (needless to say) is very important - but putting that aside for a moment where does this all lead you to think?

Do you now believe you may have had that Akto in 100mph winds? Very likely not. You may have got lucky of course and are truthful but most probably aren't (without realising it maybe). Even so, is it ideal? Is it worth the money?

These tents may have stood - for want of a better description - but apart from my video, ALL were taken down soon after and the user headed off home (or back to display depending on which video). So, those tents could be deemed to be fine and dandy and performed exceptionally well - or did they??

Terra Nova Solar Competition 2 - getting hammered side on by winds up to 45mph

When I woke from that nights storm in the Laser Competition, the tent appeared to be OK at a glance. In fact I was quite relieved! But then I noted some friction burns on the flysheet where it's rain hood is situated. Grey smudgy marks on the flysheet.

What I also didn't spot and consequently discovered on another exposed and windy camp, was severe wear and tear where the carbon rods are situated at the foot and head ends of the tent. The rods had almost run through the fabric. After that particular camp, the main tent pole developed a severe buckle, too. Winds were not as strong as before - so clearly the duress the tent had been previously put under had taken it's toll.

A bit like when you bend a spoon. You can flex it, but always straighten it out to normal. But after several repetitions, eventually the spoon snaps. Tent poles can be just like this (clearly depends on it's composite of course).

Same goes for tent fabrics. Tear strength, for example. Or how about SilNylon (silicone coated nylon)? Worth observing when it's sagging after prolonged rain as it could consequently be compromised in high winds.

So, your shelter may well have stood - but at what cost? Do you really want to fork out for spares or even a new tent?

One camp I recall was on Seathwaite Fell in the Lake District, and on that occasion my Laser Comp withstood a severe battering but a friends Hilleberg Akto took off in the night and ended up near Sprinkling Tarn some 300 metres away. He'd climbed out for a call of nature, zipped the door shut and 'whoosh!' Off it went.

I've always thought those 'barn end doors' on the head and foot of a Akto were screaming for any strong winds to ram into them and try to pick the tent up. Whereas with a Laser Comp, though it's not as stable with regards to fabric flapping about in the wind - it only soaked up the winds energy by flexing and moving. Even so, this causes wear and tear. We were pitched together in the same vicinity, too.

The only tent on this occasion to not budge an inch was a The North Face Tadpole. A semi-geodesic tent which requires the user to ideally pitch tail into the wind (fortunately, it was on this camp). But does this all mean the Akto is pretty crap in bad weather? Of course not. Some would read it that way though - it's just not the ideal shelter for such conditions.

So, whereas some tents will flex and move and act as a sponge to the winds energy - it doesn't make for a comfortable nights sleep. Or prevent any unseen damage, either. But a strong geodesic tent will be a lot more stable but is consequently prone to catastrophic failure if a pole snaps and so on. (OK, the word catastrophic sounds extreme but to some people it may feel like that on UK hills)

It goes without saying that fabrics, poles, guy lines and pegs all contribute to a tents strength when out on the hills - never mind where you select to pitch your shelter for the night.

Swings and roundabouts springs to mind. Minefield is word that pops into my head too.

This tent was pitched tight as a drum, but overnight rain and condensation
has made the silicone coated nylon flysheet sag

If anything I've learned over the years (and continue to do so) - despite how impressive some tents have performed in ghastly conditions (and we haven't mentioned snow loads or heavy rain!) a geodesic tent is the way to go for comfort. There's less noise but you still have to take care where you pitch. They're less likely to fail and succomb to rapid wear and tear at the end of the day, and that's why most expedition tents are geodesics. Unless of course you consider the latest breed of 'superlight' geodesics - which to be frank are pointless. You got a strong performing tent, why weaken it with materials that are not as durable? Something will give over time.

Then again, what about tee pee type tents? The design has been around for millennia! Or consider tarps and bivouacs. Not always ideal, they may not tick some of the boxes you seek in a shelter. Heck! Some lightweight tents are so small (though light) you ought as well bivouac such is the limited room for maneuver.

If you're after space and comfort no shelter is bombproof - but the more durable and tough you want the fabrics to be, the stronger you want the poles - logically the heavier it will be to carry on your back. Simple.

Common sense is the order of the day. You choose a shelter apt for the conditions you are likely to encounter and make your pitch carefully. There's not much to add, really. Experience and mindset count for something, too - I'll happily deal with a storm while someone else may feel very unnerved. Each to their own.

So my gripe? Well, I've mentioned one and that was peoples perceptions of wind speeds. Another was, "The tent stood fine. It's bomber!". Errrrr, no. It stood then, but after a few nights in those conditions I very much suspect it will soon fail.

Just because my Laser Competition tent withstood winds of 50mph one night, does not mean it should be deemed 'bomber'. Or any other tent for that matter. There's so many other factors involved. How about cotton fabric tents, for example? They're tough and durable if cared for (though heavy). All the rage is silicone coated nylon (SilNylon) and cuben fabrics now. Durability and stamina are keywords to be mindful of.

You get what you pay for and consequently have to gauge or accommodate the shelter's limits. It's a tough balancing act. And when I say "you get what you pay for", I don't necessarily mean budget tents are not worth considering either.

The Gelert Solo, for example. That will withstand most conditions you'll face on the hills in the UK, make no doubt. It has an extremely low profile for starters which helps. It's a glorified bivvy, really. But it's not ideal if you wish to sit up inside and potter about cooking in all weathers. You can pick this tent up for £50. So, there's no excuse to not give wild camping or free camping or whatever you want to call it a go, no?

There's much to consider when you really think about it - but then again, it's quite black and white too.

I've got two tents on test at the moment. A Terra Nova Solar Competition 2 and a Vaude Power Tokee UL. Both are around the 1kg mark, pack small - yet one is much more stable and roomy than the other. The former is quick to pitch while the Vaude is tricky in comparison.

The Solar Comp 2 has had a minimum of 30 nights out with my stinking sweaty body in on the hills already. It's withstood winds of up to 45mph and heavy rain too (despite not being seam sealed, not a single leak has occurred). I spent 4 hours on Sunday giving it a thorough inspection and clean ready for winter. It's a fair mark of Terra Nova's design and attention to detail for such a lightweight shelter that seams are strategically positioned carefully and it's not showing any signs of wear and tear either.

Whereas the Vaude Power Tokee UL has yet to get a hammering, I'm dubious to it's strengths with how light and translucent the materials are and how it's overall stability (or how taught you can get it) appears to be when compared to a Terra Nova Laser Photon, for example. After all, it's a comparable product - so which is worth parting with your hard earned cash? But I'll be taking it out for a regular spin over the next 3 months or so to find out. Never judge a book by it's cover, so they say.

So out of these two tents, which would you choose when it's blowing a bit of a hoolie on the summits?

Sweeping statements or ill judged perceptions when it comes to shelters for the outdoors really wind me up if you hadn't noticed by now. For some it's like some kind of competition about who's got a bigger ding dong than the other. Or who has more money (usually than sense) than another.

No tent is 'bomber', all have their strengths and weaknesses. All shelters have varying compromises to be made - be it for you as a user or for the conditions you're likely to face. And then of course, there's your money - do you take a gamble and go for repairs/replacements or do you spend the extra for something weightier and stronger?

Furthermore, you could 'sod the lot of them' and just rough it out in a bivvy and tarp? Heck, it's cheaper!

Either way, shelters are just another tool in your armoury for enjoying the outdoors. If you want to talk about the science and other various intricacies of tents and such like - go ahead. If you're like me and care only if it's fit for purpose so you can enjoy the great outdoors? Then join the club.

Don't get me wrong, I find the design process behind it all fascinating otherwise I wouldn't have much to talk about or understand/appreciate when testing gear. Nevertheless, it's still about making the most of a trip out amongst the landscape wherever that may be.

It's more emotional than technical for me. Always has been and always will.

Otherwise consider this wee rant over - less talk and type, more hike and camp!

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