My $3K SL8 Clone is Faster Than a $16K S-Works! (Frame Stiffness Deep-Dive) скачать в хорошем качестве

My $3K SL8 Clone is Faster Than a $16K S-Works! (Frame Stiffness Deep-Dive)

Can a $3,000 Chinese road bike really match a $16,000 S-Works? I’ve been racing, sprinting, and climbing on the TanTan X68, an SL8-inspired open-mould frame from China, and it feels every bit as fast as a real Specialized Tarmac SL8. 🚲 My Bike Build: Frame: TanTan X68 (SL8-inspired) 👉 https://www.tantanbicycles.com/Comple... Groupset: Shimano 105 Di2 12-speed (stock) 👉 https://s.click.aliexpress.com/e/_c3j... Cockpit: Integrated 90 mm stem + 38 cm bar (1-piece) 👉 https://s.click.aliexpress.com/e/_c3U... Chain: KMC X12 black/gold 👉 https://s.click.aliexpress.com/e/_c3f... Cassette: ZTTO lightweight 11-30 👉 https://s.click.aliexpress.com/e/_c3P... Bottle System: Ahyka aero bottles (Trek-style) 👉 https://s.click.aliexpress.com/e/_c3m... Saddle: Plselis 3D printed wide cutout 👉 https://s.click.aliexpress.com/e/_c4l... OSPW: RYET oversized pulley wheels 👉 https://s.click.aliexpress.com/e/_c38... Pedals: ONIRII PD-06 👉 https://s.click.aliexpress.com/e/_c3J... Apple AirTag mount: 👉 https://s.click.aliexpress.com/e/_c4q... Bar tape: Yellow/gold highlights 👉 https://s.click.aliexpress.com/e/_c3G... Wheels: “Princeton-style” 55–60 mm carbon 👉 https://www.aliexpress.com/item/10050... Tyres: Continental GP5000 S TR – 28 mm F / 30 mm R 👉 https://www.continental-tires.com/pro... In this deep-dive, I break down the science behind frame stiffness, ride feel, and what actually affects a bike’s speed. 🔍 What’s inside: • What frame stiffness really means (bottom bracket & head tube) • The stiffness threshold: ~60 N/mm BB & ~90 N·m/° head tube — above that, extra stiffness changes feel, not speed • How your brain detects millisecond-level rebound delay (why softer frames feel “slower”) • Why frame flex only stores/rebounds energy as elastic potential energy — with power losses under 1 W • The real performance levers once stiffness clears threshold: aerodynamics + weight • Why reviewer Patrick Lino felt the X68 “lacked snap” — and how brake alignment & SRAM tolerances explain it ⚙️ Bottom line: At equal watts and setup, the TanTan X68 performs within the same measurable speed band as the S-Works Tarmac SL8. The difference you feel is mostly neurological, not mechanical. — — — 📚 References / Further Reading Specialized Tarmac SL8 White Paper (2023) → https://specialized.a.bigcontent.io/v... Zedler Institut – Measuring Frame Stiffness → https://www.zedler.de/en/news/medienb... Zedler Institut – Performance Tests Catalogue → https://www.zedler-institut.de/en/per... Van Walleghem J. et al. “Development of a test rig and testing procedure for bicycle frame stiffness measurements.” Sports Engineering (2018) → https://link.springer.com/article/10.... — — — ⏱ Timestamps 0:00 — Intro: SL8 vs TanTan 0:10 — Viral bike swap (100K views) 0:26 — Patrick Lino’s review 0:41 — My experience with X68 0:55 — What frame stiffness means 1:10 — How stiffness is measured 1:35 — Stiffness threshold explained 1:52 — Tour & Zedler lab data 2:12 — When stiffness affects speed 2:26 — Above threshold = same speed 2:43 — Perception vs physics 2:53 — Neurological vs mechanical feel 3:03 — Millisecond feedback delay 3:12 — Elastic energy in frame flex 3:21 — Less than 1 W loss at 1500 W sprints 3:39 — Psychological “snap” effect 3:49 — Only flexy frames lose power 4:09 — TanTan clears stiffness limit 4:19 — Same aero, same mold 4:29 — Weight: 150 g = 0.5 W difference 4:45 — Negligible real-world gain 4:50 — Physics summary 5:01 — Marketing myths 5:19 — Stiffness ≠ speed 5:28 — Ride feel differences 5:47 — TanTan ride impressions 5:55 — Setup & component effects 6:04 — Brake rub = real watts lost 6:17 — Shimano vs SRAM alignment 6:46 — Tight tolerances explained 6:59 — Setup transforms feel 7:18 — Only aero & weight matter 7:28 — Final verdict: same speed 7:41 — Paying for stickers? 7:50 — Punchline + outro 👍 Subscribe for data-driven cycling content, aero testing, and coaching videos.