A moving bicycle without a rider is asymptotically stable. The best way to explain it is to just watch the movie below. Shoving a moving bicycle will cause it to oscillate back and forth, but it’ll eventually find its way back to its stable upright orientation. No deep insight, just something that’s kinda cool.

There’s all kinds of bicycle related physics here.

Just finishes doing the Minuteman Trail again, and in my best time ever. The first time I did a full round trip on the trail, it took me two hours and five minutes. Today I worked really hard and pushing as hard as possible on the uphill sections and did it in 1h48. That three and a half hour ride last weekend with a bunch of steep hills probably didn’t hurt either.

Also, did you know that to turn right on a bicycle (or motorcycle) you actually briefly turn the front wheel to the left? Steering left causes you and the bicycle to lean to the right, which then makes you turn right. This is called countersteering. You don’t even notice it at slow speeds because it happens automatically, but word is that it can save your life at high speeds.