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.
I just had a Facebook marketplace camera scam happen to me Today.
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've had the exact same thing happen to me on ebay, FYI.
Bought an A7IV for a very good price. Seller sent a bogus tracking number. After it was delivered to not me, I got USPS to confirm it didn't match my address and got a refund from ebay. It was a pain, and I've learned to never buy from sellers without a reasonable history.
It made me very aware to how many times the best price for an item is from an account with no feedback. Ebay doesn't seem to care about these obvious scams.
And, if you do, that means they can't be self hosted? For example, if you write a comic, do you have to use some anonymous third party image service? Would a deviantart link be ok, even though you're associated with the page? Can I share a funny YouTube video? Does this make meme subs impossible?
I imagine this will be tough to create a community around, without some clarification.
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