Ask HN: What’s the most important modern simple invention?

Re:Ask HN: What’s the most important modern simple invention? by plopz on Monday February 10, 2020 @02:33PM (#22292374)

What a frustrating article, they say its missing a key component but doesn't say what.

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Re:Ask HN: What’s the most important modern simple invention? by ogre_codes on Monday February 10, 2020 @03:43PM (#22293073)

It's the Chainstays. You need two bars connecting the bottom bracket to the rear hub or the rear wheel is extremely unstable.

Most modern bikes are fundamentally 2 triangles joined at the base.

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Re:Ask HN: What’s the most important modern simple invention? by Jarwain on Monday February 10, 2020 @02:43PM (#22292478)

Even the artist just says "an important part of its frame".

If I had to guess, it's a bar connecting the back wheel's harness-thing with the gear to maintain a consistent distance. If someone sat on that, I think the wheels would flex out, the chain come loose, etc.

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Re:Ask HN: What’s the most important modern simple invention? by arpfaust on Monday February 10, 2020 @02:43PM (#22292471)

A bar between the axes of the pedals and the rear wheel ;)

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Re:Ask HN: What’s the most important modern simple invention? by InitialLastName on Monday February 10, 2020 @06:41PM (#22294612)

There's no chain stay, to complete the rear triangle.

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Re:Ask HN: What’s the most important modern simple invention? by davidw on Monday February 10, 2020 @03:23PM (#22292858)

The chainstays are missing in the first image.

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