Bicycle specifications
PWseries S2 Drive Unit Overview
Developed with the philosophy that ‘less is more’, the PWseries S2 drive unit is significantly lighter and smaller while delivering more torque than its predecessor, the best-selling PWseries ST. With a long list of features, the PWseries S2 elevates the riding experience to another level – making this multi-role drive unit ideally suited to everything from commuting and general daily usage to countryside trekking, weekend touring, and mountain trail riding.
Increased torque-to-weight ratio: The compact PWseries S2 drive unit maximum torque of 75Nm is over 7% higher than the PWseries ST, and weight has been cut to just 2.85 Kg – 16% less than the previous design – making it one of the lightest in its class. This highly desirable combination of increased output with reduced mass and a 20% decrease in volume ensures that the PWseries S2 achieves one of the highest torque-to-weight ratios in the multi-role segment – giving strong, instant, and user-friendly performance.
Greater freedom in frame design: The smaller dimensions of the unit offer bike manufacturers even greater freedom to produce generation frame designs with features such as increased ground clearance for improved performance on technical terrain.
The 20% more compact PWseries S2 layout also makes it possible for bike manufacturers to develop idealized frame designs with shorter chain-stays that can potentially increase overall rigidity to give enhanced maneuverability and increased rear wheel traction.
From an aesthetic point of view, the reduced size of the PWseries S2 drive unit also offers Yamaha’s partner bike manufacturers the opportunity to achieve a clean and minimalist look when designing the next generation of Sport and Trail models.
Improved pedaling efficiency and feel: The PWseries S2 features a narrow bottom bracket axle length of 128mm – 22.8mm less than the PWseries ST – which makes possible the application of a narrow Q-factor, and therefore improved pedaling efficiency and feel can be expected. This feature, together with the Automatic Support Mode, ensures an extremely easy and enjoyable riding experience.
The ISIS bottom bracket axle interface delivers increased rigidity, making this mid-class drive unit ideally suited to the needs of e-MTB riders. Additionally, being fully compatible with a front double chainring, the compact drive unit opens up greater possibilities for bike manufacturers.
Automatic Support Mode for all-round Sports and Trail: It's no simple feat to shift gears, adjust seat height, and change ride modes at roughly the same time. The Automatic Support Mode for the PWseries S2 selects the right amount of assist based on riding conditions. Whether you're starting from a stop, accelerating, braking, riding on a level surface, or climbing a hill, you can leave ride mode changes to the system and focus on shifting and braking.
Drive Unit Specifications:
- Drive unit: Center Motor
- Weight: 2.85kg
- Rated Output: 250 W
- Max. Torque: 75 Nm
- Max. Assist Speed: 25 km/h
- Assist Mode: 4 modes
- HIGH
- STD
- ECO
- +ECO
- Automatic Support Mode
PWseries S2 Variklis
PWseries S2 variklis, sukurtas laikantis filosofijos maюiau yra daugiau, yra gerokai lengvesnis ir maюesnis, o jo sukimo momentas didesnis nei jo pirmtako, geriausiai parduodamo PWseries ST. Naujasis PWseries S2, turintis ilgа funkcijш sаraра, pakelia vaюiavimo patirtб б kitа lygmenб, todлl рis daugiafunkciрkas variklis idealiai tinka visiems poreikiams - nuo vaюiavimo б darbа ir kasdienio naudojimo iki юygiш po apylinkes, savaitgalio kelioniш ir vaюinлjimo kalnш takais.
Didesnis sukimo momento ir svorio santykis
Naujojo kompaktiрko PWseries S2 variklio maksimalus sukimo momentas yra 7 % didesnis nei PWseries ST, o svoris sumaюintas iki 2,85 kg - 16 % maюiau nei ankstesnлs konstrukcijos, todлl jis yra vienas lengviausiш savo klasлje. Рis labai pageidautinas padidintos galios ir sumaюintos masлs bei 20 % sumaюinto tыrio derinys uюtikrina, kad naujasis PWseries S2 pasiekia vienа didюiausiш sukimo momento ir svorio santykio rodikliш daugiafunkciш varikliш segmente - uюtikrina tvirtа, momentinб ir patogш naudoti veikimа.
Didesnл rлmo projektavimo laisvл
Maюesni naujojo bloko matmenys suteikia dviraиiш gamintojams dar didesnж laisvж kurti naujos kartos rлmш konstrukcijas, pasiюyminиias tokiomis savybлmis, kaip padidinta proрvaisa, kad bыtш galima geriau vaюiuoti techniрkomis vietovлmis. Dлl 20 % kompaktiрkesnio PWseries S2 iрdлstymo dviraиiш gamintojai taip pat gali kurti idealizuotas rлmш konstrukcijas su trumpesnлmis grandinлs atramomis, kurios potencialiai gali padidinti bendrа standumа, kad bыtш uюtikrintas geresnis manevringumas ir didesnл galinio rato trauka.
Estetiniu poюiыriu sumaюintas PWseries S2 variklio dydis taip pat suteikia Yamaha partneriams dviraиiш gamintojams galimybж sukurti рvariа ir minimalistinж iрvaizdа kuriant naujos kartos Sport ir Trail modelius.
Geresnis pedalш mynimo efektyvumas ir pojыtis
Naujosios PWseries S2 modelio miniklio veleno ilgis 22,8 mm maюesnis nei PWseries ST modelio, todлl galima tikлtis didesnio efektyvumo ir geresniш pojыиiш minant pedalus. Рi savybл kartu su automatiniu palaikymo reюimu uюtikrina itin lengvа ir malonш vaюiavimа. Naujoji ISIS miniklio veleno sаsaja uюtikrina didesnб standumа, todлl рis naujas vidutinлs klasлs variklis idealiai tinka e-MTB dviratininkш poreikiams, o kadangi yra visiрkai suderinamas su priekiniu dviejш pavarш юvaigюdюiш bloku, kompaktiрkas naujasis юvaigюdюiш blokas atveria daugiau galimybiш dviraиiш gamintojams.
Automatinis palaikymo reюimas
Vienu metu perjungti pavaras, reguliuoti sлdynлs aukрtб ir keisti vaюiavimo reюimа nлra paprasta. PWseries S2 automatinis palaikymo reюimas parenka reikiamа pagalbos kiekб pagal vaюiavimo sаlygas. Nesvarbu, ar pradedate vaюiuoti iр sustojimo, ar greitлjate, ar stabdote, ar vaюiuojate lygiu pavirрiumi, ar kopiate б kalnа, vaюiavimo reюimo keitimа galite palikti sistemai ir sutelkti dлmesб б pavarш perjungimа ir stabdymа.
Specifikacijos
- Variklis: Бmontuotas centre
- Svoris: 2,85 kg
- Nominali galia: 250 W
- Sukimo momentas: 75 Nm
- Maksimalus pagalbinis greitis: 25 km/val.
- Reюimai:
- DIDELЛ
- STD
- ECO
- +ECO
- Automatinлs pagalbos reюimas: Taip
Frame geometry
- Seat tube length: 420 mm
- Reach: 409 mm
- Stack: 644 mm
- Top tube: 600 mm
- Steering angle: 67,5 mm
- Seat tube angle: 73,5 mm
- Head tube: 110 mm
- BB drop: 45 mm
- Wheelbase: 1175 mm
- Chain stay: 475 mm
- Crank length: 114 mm
- Stem length: 40 mm
- Handlebar width: 740 mm
- Seatpost length: 350 mm
- Ground clearance: 220 mm
- Standover: 770 mm
Dviratis siunčiamas supakuotas originalioje gamintojo pakuotėje (dažniausiai su nuimtu priekiniu ratu, vairu, sėdyne), kuri užtikrina prekių saugumą sandėliavimo ir transportavimo metu. Įsigydamas dviratį tokioje pakuotėje, Pirkėjas pats arba jo pasirinktas dviračių meistras būtinai turi visapusiškai patikrinti ir tinkamai paruošti naudojimui – surinkti, suvaržyti ir sureguliuoti, jei to reikia. Jei užsakyto dviračio kartu su kitomis prekėmis bendra suma mažesnė nei 190 € – pristatymas kainuoja +2,99 €*. Užsakius dviratį už 190 € ir daugiau, jis Jums bus pristatytas NEMOKAMAI*. Pristatymui į Kuršių Neriją taikomas papildomas mokestis.
