NuBike

Chain-less bike with a mechanical advantage

1 follower

Chain-less bike with a mechanical advantage

1 follower

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Changing the bicycle world with the patented chain-free design, next-gen crankshaft and vertical pedaling.

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Looks great, but I have several questions: 1. What is the maintenance compared to a regular bike? 2. what is the weight trade-off ? 3. Do we need special wheels or can it work with any off-the-shelf wheels? 4. Is this a single-speed? How does it do you get different gears? I see the main benefits being no chain to maintain and potentially less knee/joint strain based on up/down motion instead of circular motion, but are those benefits greater than the trade-offs, e.g. specialized parts and single speed.

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7yr ago

Open Lung - Open Source Ventilator

Its incredible, but not sure where he is in production.. Funding was unsuccesful https://www.kickstarter.com/proj... Probably cost near $4k to get one. :0

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7yr ago

So many industrial design choice questions here.. Couldn’t find one video online showing someone pedalling or coasting while standing (off-saddle). It shows the “possibilities” for leisure and mountain biking for example, but it doesn’t speak nor shows what is like to climb or descend from hills, impact resistance to holes and bumps, structural integrity under stress.. From a former teacher: “Every innovation looks amazing on flat ground, slow speed, with no added stressors and with no obstacles.”

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7yr ago