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A swing to cross the road
No need to build an expensive foot bridge, just swing on a swing suspended from a simple metal frame across the road, the cars don't need to stop and it can be made safe. |
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(+5)
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There could be seating and the swing could detect when it is over the destination side and release it's users
I was inspired by child playground swings
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// it can be made safe //
I want to believe. |
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How to solve the height change during the arc of the swing? i.e. need to drive up a ramp getting on and off the swing. |
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"I could have sworn it was over the destination side." |
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When it stops swinging, won't the seat be hanging above the middle of the road? Idea needs a bit of work, but is doable. |
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I thought you can have a motor or wheel with a handle on each side that pulls the seat back to whatever side is activated. |
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Or what about a zip line or skii lift across the road? |
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How about a crane deal where it pivots you across then back. Just run up to speed and since you're not pushing against any friction except the bearings on the pivot you'd have enough energy to get across. See if I can do an illustration. |
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Lines are the river, road or whatever, o is the pole with the crane arm pivoting at the top, ------ is the crane arm, i is the person. Let me see if that works. |
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Okay, you'd run to cross the gap, the pivoting arm would swing you around counter clockwise from the shown 3 o'clock position to the 12 o'clock position. |
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[doc] how do you get back? |
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Run clockwise. The illustration sucks, sorry. |
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The path would be a quarter circle. To go across, you'd get a head start running counter clockwise from the 3 o'clock position, swing across the gap, then stop at 12 o'clock. To go back, you'd run clockwise and jump about maybe 1 o'clock and land at 9 o'clock or so. |
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An interesting physics test would be to see how you'd get the rest of the way if you stalled at say 2 o'clock. Since any momentum you add by swinging would be effectively neutral might be stuck out there. |
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Okay, for the initial crossing if you get stuck, rock such that you're spinning in a counter clockwise motion, the arm just moving back and forth. Then, when you're moving towards the 12 o'clock goal position, lift yourself up so you're at the axis, contracting the circle so all that motion gets put into the overall clockwise movement. |
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Think that'd work. Only reason it wouldn't is if it didn't. |
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Alternating zip-lines would work. One end minimally raises while the other end minimally lowers, some solar panels, and Bob's yer uncle. |
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How about a gantry with two slightly downwards tracks, tilted in either direction? Roll down one, to go back move the wheel or whatever to the upper sloped one and roll back. |
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