If you don't use the service in a month, they just refund you. This has kept me from unsubscribing for years now. Some months I use it, some I don't.

It's more of hassle to unsub, and re-sub again when I want.

tl;dr: Front wheel fork angle causes uprightness, the overall cause of turning is due to tire shape and contact patch at lean. Countersteering is the input to start and maintain leaning.

Bicycle and motorcycle physics have a lot of different forces at play, but the main one for keeping the bike upright is the front wheel, causing corrective steering at lean.

When a bike starts to fall, the rake angle causes the wheel to "self correct" and steer the bike towards uprightness. With speed, the bike wants to stay upright and will self correct.

To steer at low speeds (most bicycle speeds), you actually turn the wheel in the direction you want to go very briefly, "fall" into a lean and switch quickly to counter steer in the other direction, keeping the bike upright.

At high speed it's a bit different. You don't need to initiate the turn. You can just skip straight to counter steering, which forces a lean and causes a turn. At speed you are constantly upright, so you need some input to tilt the bike.

The effect of leaning to the right with the wheel self-correcting left, is an overall arc to the right (vise versa).

As for gyroscopic forces, these are at play but the force is negligible for keeping the bike upright. Heavier wheels have higher angular momentum, making the bike a bit harder to force a counter steer. They also affect how quickly a bike can accelerate given a certain force.

Recommended reading: https://www.amazon.com/Motorcycle-Dynamics-Second-Vittore-Co...

Cool video: https://www.youtube.com/watch?v=vSZiKrtJ7Y0&t=3s

Comments URL: https://news.ycombinator.com/item?id=41514717

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Seller marked as shipped, and delivered, but my package wasn't there.

After some sleuthing (I knew a guy who works in UPS) the seller put a different ship to address. So Facebook marketplace isn't doing something as simple as verifying the tracking label is heading to the right destination.

Only doing E-bay from here on out. They have this problem solved for the most part.

I'm guessing backed up means constipated

Mac+Firefox users are probably in your customer base. Listen to the feedback.

Meta and previously Magicleap perhaps bit off more processing than they could chew with 3d models in a 3d world mesh.

The problem with conspiratory talk is that while one person may fully not intend on action, it could inspire and/or manipulate others into committing acts. The blame is shared on all for conspiring and creating that environment where acts can emerge.

Comments URL: https://news.ycombinator.com/item?id=35470992

Points: 1

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