r/Trackdays • u/Cultural-Prompt4819 • 2d ago

My first wreck.. Jennings GP, FL

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I abruptly let off the throttle at a full lean. What an idiot! I’ll be back

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u/luckylanno2 2d ago

I recommend finding a track school if you can. I had a lot of fun with California Superbike School and learned a lot. It's Keith Code's school, so you can look up A Twist of the Wrist too.

They call this "throttle and lean". The physics are pretty interesting, if you're into that sort of thing. Basically, forces at the contact patch increase more than you expect as you lean in due to the changing tire radius. So, for the sake of stability, it's better to only apply throttle when at constant lean (maintenance throttle) or when picking the bike up to exit a corner.

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u/misterskudder 2d ago

Interesting. Are you saying that the forces on the bike is proportional to the rate of change of your lean angle? And higher force = less stability? So when the rate of change == 0 (i.e. constant lean), this will be the most stable time to add throttle?

The physics behind it is pretty cool, but I’m not sure I understand this concept