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The other interesting part I don't see discussed often is that aluminium does not have a fatigue limit. The wording of that is slightly confusing if you don't know what it means, but essentially aluminium will eventually always fail from stress cycling at any stress level after enough cycles. Steel has a limit, where as long as the stress is below it's fatigue limit, it will not fail no matter how many cycles. It takes quite a while, but generally aluminium cracks around the 500 million cycle mark, at least that's what airframe engineers assume. If your a boat person...

I've learned that I prefer a narrower rear rim than the standard 30mm. I started playing around with rim width after running 32mm internal rims that felt harsh and unforgiving. Depending on type of MTB somewhere between 25-28mm feels best at my 195-ish lbs, with the standard 30mm up front. My guess was always that my preference for narrower rear rim was because I like rounder tire profiles. After reading your excellent articles, I'm now thinking these narrower rear rims add beneficial lateral compliance for the tech riding I love and the tire profile wasn't the primary benefit. Good stuff...

Renishaw, who makes the ti-printers, are a massive investor in Atherton bikes. So that helped a lot. Other than that, they hired the Robot bike engineers and bought the IP to the process.

No I haven't used those BYB lap timers. The only one I've used it LitPro