Winter Camping: Sleds and Toboggans
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- เผยแพร่เมื่อ 30 พ.ย. 2020
- 40 years of experimenting with different kinds of human-hauled sleds and toboggans during snowshoe trips in Canada's north.
For more about Wilderness Tripping and Equipment, check out hadfield.ca/wilderness/
Video by: Dave Hadfield
Music Written & Composed: Dave Hadfield
CD: Wilderness Waltz,
Copyright 2001, Dave Hadfield www.hadfield.ca
Available at hadfield.ca/wilderness-waltz-cd/
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I love this video. Thank you for sharing your experiences. I loved the still photo of the guy with the old green canvas rucksack. So, I think Ive learned more from this video then all the videos Ive watched in the last decade! It gave me a lot of validation in what I learned on my own and its also showed me a few things I got really wrong.. And for that I thank you, Good Sir!
My pleasure.
I wish I'd been able to watch this video back in 1985. It would have saved me lots of trial and error.
Excellent info!
Thanks for the video, Dave. I really enjoyed that. I'm been learning from you for many years now. Thanks for continuing to share your knowledge.
Good video - thanks.
Excellent video Dave!
I hope I'll visit the far north someday. Texas doesn't exactly get much snow :-/ .
Hi Dave. I concur with you about the pulk. I made one with stitch-and-glue plywood and retired skis as runners, and find it easier to pull than a similar sized toboggan. It is also easier to load and doesn't slip sideways on a traverse like a toboggan does. On mine the runners are spaced roughly at the same separation as I ski, so they follow my tracks when I use skis. You are certainly correct that the loading on our skis and snowshoes is always going to be higher than on any sled, so it is unlikely to sink in a ski or snowshoe float.
Thanks Dave, pretty sure I read your adventures on the website wintertrekker before. Enjoyed the videos
You should do a ski sled building video for us who are no as skilled.... loved this video.. thanks
Well done ! The years of pulk improvement and your final design works. The USA military Ahkio the fibreglass unit is rated at 200# of gear, and it does pull nicely. I have one that has been the test bed for this area and I conclude that its too rocky to be easy to pull. But for winter hiking and hot tent load I'll use the pulk. The whistle stop of the train is great wish we had those, But USA is not like you guy's at all. Alaska and Montana have whistle stops that the only 2 I know of. Your last sled is stout and looks good with some build up around the runners but not bogged down. Your video is the best one I have seen that shows the what worked and what the change was to fix the sled. Great job, happy trails and happy new year. Wyoming
Thanks! Lots of trial and error. Glad you liked it.
Nice video. Which of the sleds to you ultimately end up preferring? At the you were trying the kids sleds.
I like the kid's sleds for the reduced overall weight, but they are somewhat fragile. A mix of those with a ski-sled on a multi-person trip is a good idea. I also very much prefer a grub-box with a hinged lid for a kitchen, and that is easier carried on a ski-sled.
Cool
The ski sled idea only makes sense in certain conditions. In warmer conditions, and at sufficient speeds that energy lost to friction of intact snow crystals can melt the snow crystals, you get micromelting under the contact area. Fluid creates viscous drag, which is proportional to contact area. So if you can book it at 10 km/h near zero deg C, the ski sled makes sense.
In colder conditions and at lower speeds however, there is unlikely to be any micro-melting. Instead the resistance is now primarily due to loose snow compaction and dry friction. In this scenario, there is no advantage to the ski sled, as the dry friction is solely due to weight and coefficient of friction, while compaction force is likewise neutral as it depends on both compaction depth and frontal width of the slider. Though I would argue that a flexible sled that undulates over surface irregularities would preferentially reduce the depth of compaction compared to a rigid sled. But a flexible sled can be stowed in a smaller vehicle more easily. But the ski sled is heavier and its actual weight is not disclosed. If you have to mill I-beams out of 2x4's, it's a hint that it might not be the best approach.
A major principle in ski prep is the microstructure of the base. That has to be maintained on a regular basis. If you buy second-hand skis for $10, any microstructure applied at the factory is long gone, and if you don't re-establish it then the surface is the same as any ordinary sheet of poly. But, you can apply micro-structure to a poly toboggan just the same as to a ski, and get that benefit if you want it.
In short, the argument is nuanced, need to look at many factors before choosing a design.
Excellent comment, although it doesn't match my personal experience, actually hand-hauling over many trips.
On the land, the thing that most influences the drag is the degree of compaction of the snow.
And no on ever hand-hauls at 10 kph.
Anyway, thanks for your thoughts, and the effort.
Hi Dave, awesome content. Could you share the weight of the sleds, or at least the ski sled? I know you said it's too heavy, I'm just wondering what it actually weighs.
I'm building a kickboggan and it already seems a little on the heavy side.
OK, hang on until I get a chance to do that.
so skis r your favourite? I'm watching another vid of guys using the black boxy sled in like 2-4 ft powder breaking trail and it looks so hard. 1 km per hour. r the skis better on fresh deep stuff or they sink? Also sometimes they cross narrow bridges that look like near a ft wide. skis might straddle these? BTW while searching for skis i noticed the bags look really good for gear? waterproof, cheap like the skis, and long so u can access anything along the length of it in 1 second.
The black boxy sleds are usually too short and wide. Designed for a ski-do. The ski-sled does better because they're skinny, there is less than 100 lbs on them, and there is always at least a partially packed trail. They float better than you think.
You need a tarp for the whole load to prevent snow accumulating during the course of the day, which can add a large amount of weight to what you have to pull. The boxes under the tarp is a lighter better solution.
@@davehadfield5906 did you wax those skis? or not needed? you said you wanted to change the plywood. I'm trying to visualize a material for a hollow frame to store gear in it. 2 birds.
@@brentkelly5445 No, I've never waxed the skis on the sled. I do repair the scratches though. Yes, the lighter the better.
How wide are your ski sleds? I'm planning a copy of your sled and would love your insight.
Thanks!!
They should be narrow. I don't have the dimensions handy, but you want them to track mostly in your snowshow prints. There is a tendency to make them wide. Better to make them as long as possible, skinny, and try not to double-stack your load. Good luck!
So I slapped my snowshoes on and took a quick measurement... 16-17 inches in my msr denalis. So I'm going with 16!