CannondaleSystemSix
Algupära
Välja lastud 2018. aasta septembris pärast 3,5-aastast arendustööd, oli SystemSix Cannondale'i esimene pühendatud aerodünaamiline maanteeratas ja seda turustati kui 'maailma kiireimat UCI-legaalset maanteeratast'. Disainitud peamise aerodünaamikainsener Nathan Barry poolt, kasutades CFD-d ja tuuletunnelitest, võttis see kasutusele tervikliku 'kuueosalise süsteemi' lähenemise — raam, kahvel, istmepost, juhtraud, vars ja rattad, mis kõik on koos projekteeritud, kasutades kärbitud õhutihedaid profiile, mis on häälestatud Cannondale'i poolt nimetatud 'Yaw Weighted Drag' abil. Ainult ketaspiduritega disain võimaldas sügavat aerodünaamilist integreerimist, mis poleks olnud võimalik velgpiduritega. Sõideti WorldTour'is EF Education-EasyPost (siis Drapac) poolt aastatel 2019-2022. Ratas oli umbes 1kg raskem kui universaalne SuperSix EVO, mis muutus probleemiks, kui konkurendid (Specialized Tarmac SL7, Trek Madone Gen 7) ühendasid aerodünaamika ja kergekaalu üheks platvormiks. Kui Cannondale 2023. aastal neljanda põlvkonna SuperSix EVO välja lasi — mis võttis enda peale nii aerodünaamika kui ka tõusmise ühes raamis —, siis SystemSix vaikselt pensionile saadeti. 2024. mudeliaastaks oli see sisuliselt ainult väljajooksev laovaru.
Tehnilised andmed
- Raam
- BallisTec Carbon monocoque with highly truncated airfoil tube shapes; top builds use Hi-MOD (Cannondale's stiffest, lightest carbon layup). Claimed bare frame ~981 g (medium), disc-only construction. Asymmetric tube/fork design tuned for pedaling and braking loads.
- Kahvel
- Full BallisTec carbon SystemSix aero fork, disc-specific with asymmetric legs, truncated airfoil profile and 50° steering-stop allowing fully internal cable routing through the integrated cockpit. Rigid (road).
- Jõuülekanne
- Shimano Ultegra Di2 2x11/12, Shimano Dura-Ace Di2 2x12, SRAM Red eTap AXS 2x12 — disc-brake only, no rim-brake variant ever made
- Pidurid
- Hydraulic disc only (no rim-brake variant). Flat-mount calipers matched to groupset (Shimano Ultegra/Dura-Ace or SRAM Red), typically 160 mm rotors front and rear.
- Rattad
- Cannondale HollowGram 64 SL KNØT carbon — 64 mm deep, 32 mm external / 21 mm internal width, tubeless-ready. The wheels are an integral part of the 'six-part system', engineered with the frame for aero gains.
- Rehvid
- Vittoria Rubino Pro Speed 700x25c (measure ~27 mm on the wide HollowGram rims).
- Vedrustus
- Rigid (aero road race bike). No suspension; some vibration damping via SAVE seatpost flex zone.
- Rooliplokk
- Cannondale HollowGram KNØT integrated aero one-piece-style bar (38–44 cm) and KNØT stem (80–120 mm, adjustable ±8°) with fully internal cable/hose routing. Proprietary HollowGram SL 27 KNØT D-shaped (truncated aero) carbon seatpost with SAVE compliance, 0/15 mm offset.
- Sadul
- Fizik Tempo Argo R3 (150 mm width, K:ium rails) on the Red eTap AXS build; saddle varies by spec level. Seatpost: HollowGram SL/HG 27 KNØT aero carbon.
- Geomeetria
- Aggressive aero-race geometry. 58 cm: 73° head angle, 73.5° seat angle, 405 mm chainstays, ~1000 mm wheelbase, stack 580 mm, reach 398 mm. Sharp, nimble handling despite deep wheels.
- Kaal
- ~7.9 kg (58 cm, Hi-MOD Red eTap AXS, no pedals/cages); ~8.4 kg on Ultegra/Dura-Ace alloy-wheel-free builds. Heavy for a climbing bike but light for an aero bike with 64 mm wheels.
Verdikt
- Genuinely one of the fastest UCI-legal road bikes of its era — Cannondale's wind-tunnel data put it at ~203 W drag, lower than the Cervélo S5, Trek Madone and Ridley Noah Fast
- Nimble, sharp handling that belies the deep 64 mm wheels — testers consistently call it agile, not a barge
- Surprisingly capable climber for an aero bike thanks to a very stiff chassis that rewards out-of-saddle efforts (loses out only above ~6% gradient)
- Reasonably light for the aero category (~7.9 kg on the Hi-MOD AXS build) and fully integrated cockpit + wheels system
- Comfortable enough not to beat you up on broken surfaces despite the firm, race-focused ride
- Very stiff everywhere with limited compliance — long in-saddle efforts take a toll over rough roads
- Heavy relative to dedicated climbing bikes; ~1 kg heavier than the SuperSix EVO, the trade-off that ultimately ended the model
- Narrow stock tires look (and ride) odd against the very wide HollowGram rims, adding little bump compliance
- Proprietary HollowGram KNØT cockpit and D-shaped aero seatpost limit fit adjustment and make replacement parts expensive/scarce on the used market
- Premium pricing across the range; the integrated aero parts inflate cost and complicate servicing
Kellele sobib
Tahad ühte?
Leia see jalgratas turult või vaheta muljeid ratturitega, kes juba sõidavad.