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"V keel" on toboggan?
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Author:  bark-eater [ October 20th, 2011, 8:06 am ]
Post subject:  "V keel" on toboggan?

The Conover's "Snow Walkers Companion" mentions some toboggans having a "V keel" built in to the trailing end.

"Craig MacDonald found that among some native groups the last three crossbars of a toboggan were increasingly V-shaped towards the rear. This gave the last few feet of the toboggan a slight keel and seemed to reduce friction and aid tracking in some conditions."

Has any one here seen or tried a sled like this? It seems like an easy enough modification to do to a plastic sled, but would effect its "roll-up-ability"

The other complication I see is putting a V in the stern of the sled might make lashing down a stove problematic unless it rode on top of the cross braces.

I'm guessing that the keel would be very subtle with maybe a 1/2" of depth at the trailing edge, to keep things from getting wonky on ice or adding drag.

Author:  Bill P [ October 20th, 2011, 9:14 am ]
Post subject:  Re: "V keel" on toboggan?

I don't think a keel would be that benifical unless you are traveling in the Artic. In the woods your toboggan is following you in your snowshoe float ,so tracking isn't a problem. I like the fact that my 10 foot plastic toboggan slithers behind me following a sometimes curvy trail. The last thing I would want is the toboggan going straight when I want it to turn.
Bill

Author:  dunkin' [ October 20th, 2011, 7:38 pm ]
Post subject:  Re: "V keel" on toboggan?

I do see some merit in very select conditions, but in most cases it follows along nicely in my ski or shoe tracks. Plus, I have put on lots of mile one extreme hardpack and lots on ice too, and think it would put a lot of wear on this keel.

A friend had a commercial built pulk that had two short steel runners on it, and for the most part he found them to be a hassle, and removed them.

Author:  pawistik [ October 24th, 2011, 3:04 pm ]
Post subject:  Re: "V keel" on toboggan?

Another way to do it, might be to add a keel strip at the stern of the sled. I would think adding a bit of shape to the cross bars to the back to bend the HDPE would cause a very rounded effect. Compare this to what you would see with the 2 thin slabs that might make up a traditional wood toboggan - the angle of the junction would be sharp by comparison. Think shallow V versus shallow U. I'm not sure that's what you would want, and a bit of "bite" from an extra keel piece attached at the stern would be more effective.

Having said that, if I felt it necessary to add something to control sideslip at the tail on a slope, I think I'd add small fins that could be lowered or raised as desired. I've seen (pictures of) this sort of thing on some pulks made for mountain terrain.

Cheers,
Bryan

Author:  bark-eater [ October 25th, 2011, 1:07 pm ]
Post subject:  Re: "V keel" on toboggan?

I was thinking I could split the tail of the sled to give a sharp V. Way back when I had a wooden single snowboard called a "Snurfer" It was a molded ply deck with a turned up nose and a V formed at the tail. as I remember you could carve a little with it, but it was to narrow to put your feet across the board, so it was a highwire act to get down the hill.

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