If you grew up in a snowy climate, chances are you’ve ridden a sled or toboggan when you were young. The downhill part of sledding is great fun, but dragging the thing back up gets boring quickly. [Luis Marx] had been dreaming of sledding uphill since he was a child, and decided to make his dream come true by building himself a motorized sled (video, in German, embedded below).
The sled is powered by two DC electric motors driving a continuous track, like a rudimentary snowmobile. The motors were originally designed for electric bikes, and can develop 30 newton-meters of torque each. [Luis] designed and 3D-printed a custom set of drive wheels to link the track to the bike motors. Two motor controllers enable basic speed control, while a beefy battery carries enough juice for multiple trips up and down a slope.
The motorized track is mounted on a clever frame that can swing up or down and is held in place by two spring-loaded pins. This way, you can simply lift the system off the snow when you’re ready to slide downhil, and swing it down again when you want the sled to do the pulling.
With winter nearing its end, the snow near [Luis]’s home in southern Germany was too soft to get much traction, but subsequent tests in a ski resort up in the Alps showed the system working perfectly. It even had enough traction to pull a second sled behind it. Perhaps some proper suspension could make it go faster on the downhill run, too.
11 thoughts on “Never Walk Uphill Again With This Motorized Sled”
Handy for those going both ways.
Another obscure snow vehicle:
Well not to be that guy but aren’t kids fat enough already?
Try feeding your kids less fast food and more fruit.
There is a reason its called diet & exercise. My wife & I walk 2 miles every evening.
Plus, sitting is the new smoking. And yet I’m also that guy who installed a hub motor on his bike.
that reason is food industry propaganda :)
You think they’d be fat riding that thing around all day???
I bet a lot of calories are used just balancing and steering let alone getting back up when they fail to do that.
Then of course you have chasing after one another to get their turn…
And it keeps them busy and occupied, away from the snacks.
Granted it’s not the same as carrying a sled up a hill dozens of times but I doubt it’s a couch potato activity either.
Did he 3D print the tread too or did he buy that somewhere?
A Version with hoverboard wheels
An other version with hoverboard motor. https://youtu.be/M6-VhkMgdJc
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