Tuesday, January 4, 2011

Pemilihan Jaket untuk Hikers

"saya hendak beli jacket untuk naik gunung tapi saya tak tahu samada apa features yang patut saya take into consideration semase membelinya". Mungkin ini yang menghantui anda. Teruskan membaca hasil kementar-komentar dari mailing list ogkl.

Ni artikel yang boleh kita kongsi bersama yang menjelaskan serba sedikit tentang kelebihan/kekurangan bulu angsa (goose) & sintetik insulation...baca yer..:))

pemilihan jaket biasanya berdasarkan atas beberapa faktor;

1. tujuan ;
kalo nak naik gng perlukan jkt kalis angin & air serta mampu panaskan badan, kalo setakat camping biasa2 mungkin mencukupi sekadar jaket nipis yg windproof and waterproof

2. heavyweight vs lightweight;
cari jkt yg ringan & diperbuat dr material yg bagus kalo nak naik gng..sesetengah jkt, material bagus tetapi tak praktikal nak bawak naik gng sebab terlalu tebal & makan space.tp jaket gini bole jugak di bawa kalo kita guna porter..hehee

3. brand/jenama
biasanya jaket yg bagus ni dikeluarkan oleh manufacture yg well known atau mmg dah established dalam pengeluaran barang-barang outdoor. Maknanya yang memang dah ada track record yang baik macam TNF, Karrimor, Columbia, Berghaus, Salewa, Salomon, Mountain Hardwear & banyak lagi...jangan segan-segan nak surf website tersebut..kena baca tentang teknologi yang pengeluar offer melalui produk mereka itu...kadang-kadang tu nampaksaja warna & design cantik tapi not really functional untuk kita...

itu sekadar beberapa faktor ringkas sebelum nak beli jaket.....kalau nak tau tentang thermal insulation, thinsulate insulation dll yang berkaitan boleh guna link kat bawah ni.....kebanyakan product yang bagus menggunakan thinsulate insulation....depa masukkan sejenis material yang terdiri dari microfibre yang berguna sebagai pemerangkap haba utk badan kita..so ianya boleh panaskan badan kiranya..beratnya juga berbeza-beza...adusss..panjang lebar la pulak.hehhee..terus saja ke link di bawah ok.


kena la beli jkt branded,thn lama, memanaskan badan....baru lah boleh jadi pendaki yang bukan saja degil, tapi bergaya!! hahaha


Goose Down vs Synthetic insulation

Commentary by Ray Jardine

I was in high school when I bought my first down-filled sleeping bag. The year was 1960 and the company that made the bag was Holubar. In fact, Mrs. Holubar sewed this particular sleeping bag. And it sure was a big improvement over my cotton filled bag. The down was the highest quality prime northern goose down. Even so, after several years of rigorous service it lost its loft and had to be thrown out.

In 1971 I designed and sewed together a two-person down-filled sleeping bag. Working with goose down is an unbelievably messy experience, and one I plan never to repeat. I used this bag for a few years until it was stolen.

In 1987 Jenny and I hiked the PCT using a top-quality goose down sleeping bag, unzipped and draped over the two of us. During this trip the sleeping bag failed us twice. Both times were when the bag became wet and lost its loft.

One of these failures occurred during an uncommonly heavy deluge in the mountains of central Oregon. The main problem was not the rain, but our tent which was trapping moisture and soaking everything inside - including our down sleeping bag. For the first 24 hours we endured, but as time slowly passed, and the temperature slowly dropped, our ever more wet sleeping bag inexorably lost its loft. This was when we began to worry. On the verge of hypothermia we packed up - in the pouring, near-freezing rain - and resumed hiking.

Hiking in a storm with a soaking wet goose-down sleeping bag is extremely dangerous. This is because one has no margins of safety. Should the storm intensify and require making camp, one could not. The wet and flattened sleeping bag would sap body warmth rather than preserve it.

Many people have died in wet goose down sleeping bags, and I, personally, know of a few of them. And yet companies making goose down products continue to hype their wares, and to exaggerate their claims. Buyer, please beware!

Fortunately, Jenny and I were not too many miles from a road, and managed to catch a ride into town. In the final few weeks of that 4+ month hike, the goose down had lost so much of its loft that it would not stay on top of us. It had so much room to move about inside the nylon layers that every time we shifted, so did the down - from off the top of us. We spent a lot of time shaking the down back toward the center. And even then, the sleeping bag was no longer warm.

Returning home we retired that sleeping bag, all $350 worth of it, and kept it in a box for old times sake until finally throwing it away.

Back at it again, in 1991 we hiked the PCT a second time, again starting with a brand new, $350 goose down sleeping bag that finished the trip in exactly the same inglorious fashion. But at least during this trip the goose down failed us only once.

We were hiking in a storm in northern California, miles from nowhere. Here again, the tent trapped moisture and soaked the sleeping bag, which in turn lost its loft. Nevertheless, we broke camp and hiked all through the next day. Towards evening we stopped to make camp, and in the rain pitched the tent but could not crawl inside. The weather was very cold, and we had no insulation to crawl into. Fortunately we were able to start a campfire. Also fortunately we had sewn a large awning to our tent. So under this we sat for a long while, trying to dry the wet sleeping bag.

Not only is goose down quite useless when wet, because it goes flat as a pancake, only in clumps, but down is extremely difficult and slow to dry. So there we sat. The awning over us, which resembled a tarp, was a great help. It sheltered the sleeping bag while we held the bag toward the fire and its radiating warmth.

We managed to dry the sleeping bag just enough to safely go to sleep. The night was anything but comfortable, but to our good fortune the weather began to clear the following day.

After returning home and throwing that sleeping bag away, the next year, 1992, we again bought a new $350 goose down bag for a hike of the CDT. We also replaced the tent, fitted it with an even larger awning over its doorway, and cut away its entire front end - for much-needed ventilation. This trip certainly had its moments, weather-wise, but the sleeping bag at least survived, and although we have not used it since, at least we still have it, even though it lost about half of its loft.

In 1993 we were preparing to hike the AT, but were in no moods to spend yet another $350 on another down sleeping bag. So we made our first "quilt" of synthetic insulation. This quilt proved remarkably easy to make, compared with my ordeal making the down sleeping bag many years ago. And the quilt was very inexpensive. Yet it preformed a hundred times better than down. We were still using the tent & awning, and many times experienced heavy and prolonged downpours. We knew very well from experience that the pervading moisture would have flattened a down sleeping bag. But even though our synthetic quilt became quite moisture-laden on several occasions, it stayed warm. Big difference!

In 1994 we hiked the PCT a third time, using a home-made quilt of synthetic insulation. Once again the quilt was a big success.

Since that fifth long-distance hike we have made many long journeys in the Arctic, in addition to our IUA hike & bike, rowing across the Atlantic, peddling across the country, and so forth - all with home-made synthetic insulation quilts.

We have learned, through much trial and error, the true disadvantages of down insulation - and we are not taking any more chances with it.

Moreover, we like to think that thanks to our quilts made of synthetic insulation there are a few geese out there with their precious down still attached to their bodies rather than plucked as a commodity for commercial gain.

Rasanya ada satu perkara lagi perlu tau.

jaket/shell (outer layer)
fleece (middle layer)
baju/t-shirt (base layer)

ada jaket yang dibuat berganding dengan fleece, ada pulak yang fleece dijahit pada lapisan dalam jaket. pemilihan jaket perlu disesuaikan juga dengan fleece. tak adalah bila beli jaket lepas tu, bila nak pakai fleece, jaket jadi sendat.

[apip embi] OGKL

Cerita dari artikel tu lebih menggalakkan kita guna fabrik material dari sintetik insulation sebab banyak kelemahan geese down ni, terutama jika keadaan sekeliling yang lembab & basah.

[azizan zolkipli] OGKL

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