Well I didn't expect to see Cycle Fit mentioned on HN. They've designed and built several bicycles I've raced competitively on and factor in health issues, indi

Well I didn't expect to see Cycle Fit mentioned on HN. They've designed and built several bicycles I've raced competitively on and factor in health issues, individual power output, style of riding, etc. They were one of the first to really push bike fitting to where it is now. It's a very science driven shop. My first experience was when racing as a lowly cat 4 cyclist on a Cannondale off-the-peg bicycle. I experienced lower back pain and was pretty sure my position was wrong but my tweaking wasn't improving things. Phil put me on a Serotta cycle fit machine which looks like this: https://www.cyclefit.co.uk/fitting https://www.cyclefit.co.uk/fitting . It allows every aspect of the position to be adjusted until the best position for you is found... best with regards to whatever you prioritise. For me it was pain-avoidance first, then endurance and hill climbs power/stamina second. Once they found the best position, we dialled-in the Cannondale to as close as the stock frame allowed (changing steam, seat post, saddle, bars)... and I went from DFL (dead effing last) in races to top 10%. I didn't really enjoy racing criteriums so didn't stick with that, but I did love the difference the bike fitting made to my enjoyment of riding and had changed to doing distance social rides instead (100+ mile on a weekend... London > Brighton > London for example). And it made me think, if Cycle Fit can do this to a stock bike, what could they do with a fully bespoke bike? The answer is a lot. I've owned a Serotta, Robin Mather, and a Seven, all made for me after geometry designed by Phil at Cycle Fit. Each bike was for a different purpose, and each one is subtly different. It's amazing, I no longer experience any back pain when cycling, not even for ultracycling and endurance events that last a few days. Riding these bikes feels like being roadrunner in the cartoon, floating through air and legs spinning effortlessly. Everything about them is superlative, but it's the fit that makes it so. The bikes I test rode were good, but not as good as the bikes made for me. I lost the Serotta due to a hit and run incident in London, but the other two remain my prized bikes. As for Phil, he's become an essential tool for a lot of professional cyclists. His obsession with understanding the science behind how the human body performs on a bicycle has led to some major wins for a lot of professional athletes. He's also extremely humble and very approachable. If you're ever in the market for a ridiculously good bicycle made specifically for you... then Phil is your man.