Schindelhauer ARTHUR X35 / graphitschwarz L (59cm) | graphitschwarz

ARTHUR X35 – light singlespeed e-bike with Gates carbon belt drive and city lighting

A video from an external video provider is displayed here. YouTube has its own cookies and may collect data on activities. Consent is required to view YouTube videos.

Enable Youtube videos

This bike rests on a triple-butted aero-shaped tubeset in AL6061-T6, that hardened temper state of aluminium which becomes particularly resistant after solution treatment, quenching and artificial ageing. A forged bottom bracket shell and forged dropouts absorb the highest loads, the sliding dropout system adjusts belt tension, and the belt port opens the frame for any belt change. Integrated seat clamp and smoothed welds keep the surface calm. The hydroformed aluminium fork is tapered, routes cables internally and takes disc brakes via post mount, joined by an integrated Tange Seiki headset with a taper from 1 1/8 to 1.5 inches. Because the entire cable routing disappears into frame and fork, the bike reads rounded and tidy – a classic look, even with an electric drive at work.

The drivetrain runs on a Gates Carbon Drive CDX with 60 teeth in front and 22 at the rear on a 118T toothed belt. A single gear shapes the character: the ratio is tuned for low rolling resistance on asphalt, the bike stays light and responds instantly to every pedal stroke. A Shimano Alfine Hollowtech II crankset and press-fit bottom bracket form the bearing, complemented by CNC-machined aluminium urban pedals. The carbon belt works quietly, free of rust and without lubricant – drivetrain and equipment thus follow the same idea as the frame: weight-saving, robust and fit for everyday use.

Electric thrust comes from the Mahle ebikemotion Hub Drive M1 in the rear hub, acting directly on the wheel and delivering 250 W with around 40 Nm up to 25 km/h. The Intube battery of about 250 Wh disappears into the down tube and offers roughly 50 to 80 km of range depending on the assistance level with about three hours of charging; it can be removed for servicing. Control runs via the iWoc ONE with a top tube button and an LED colour scale for battery status, plus the app for iOS and Android showing speed, weather data and GPS navigation. The seat tube mounting points also take a Mahle range extender battery, which extends range for longer stages.

The only visible electric feature is the lighting: the LightSKIN handlebar integrates the headlight, the LightSKIN seat post the rear light – both mounted on the bike itself. The high-flange front hub with disc mount, eyeleted Alexrims CXD26 rims and Sapim Race spokes laced 3-cross and 2-cross deliver wheel stiffness and long service life, while the Formula CURA hydraulic disc brakes with 160 mm provide predictable deceleration in any weather. Continental GP Urban Classic tyres in 35-622, a Brooks Swift saddle, Schindelhauer ergo leather grips and the Satori Stealth aluminium stem complete the build. Rear rack mounting, mudguard mounts and kickstand mounts are provided, and fittings for bottle cage and lock holder round out the equipment. At 13.4 kg in size M and a system weight of 130 kg, this singlespeed is among the lightest e-bikes in its class.

What the name ARTHUR X35 reveals

These urban ranges deliberately carry first names, because a proper name conveys the attitude of a bike. ARTHUR designates this line, guided in-house as the avant-gardist: electrically assisted, yet visually a classic bicycle. Striking is what the name omits: where the sibling models add a Roman numeral to spell out their gear count, here only X35 appears, standing for the drive generation from Mahle used – the Hub Drive M1 with Intube battery. That designation replaces the gear count because a singlespeed knows a single gear and needs no numeral. The colour Graphite Black is listed separately in dealer naming; the successor version carries the suffix SSP, which refers to the single-speed principle, and is available with the same technology in Garnet Red.

What separates this singlespeed from the geared ARTHUR variants

Three points distinguish this edition from the other ARTHUR versions. First the crank: instead of a Pinion gear unit, a Shimano press-fit bottom bracket and an Alfine Hollowtech II crankset drive the singlespeed arrangement, keeping the structure lean. Second the weight of 13.4 kg in size M – the lightest build of the range, since no bottom bracket gear and no additional belt or chain set are needed. Third the gear ratio of 60 to 22 teeth, deliberately designed for efficiency rather than range. In the VI and IX versions, a gear unit with six or nine speeds adapts to gradients and headwinds; in the X20 SSP successor the power of the drive generation rises as well. Brakes remain at a high level with Formula CURA hydraulics, whereas the Pinion models use Shimano Alfine. The ARTHUR Cruiser occupies its own niche with 47er tyres, riser handlebar and front basket for relaxed cruising – this bike counters that with 35 mm tyres and a sporty-comfort seat position.

What the ARTHUR X35 is made for in everyday life

Its strengths come to the fore on commutes, shopping trips and short outings: flat routes, familiar paths, a bike that fits into any cellar without searching and, at barely 13.4 kg, also goes up stairs and into the train. The sporty-comfort geometry adds relaxation by hand, while electric support up to 25 km/h makes every light, every junction and every headwind straightforward. Compared with the geared variants, reducing to a single gear pays off where gradients and surfaces rarely change; anyone who rides between hills and flats daily and brakes often reaches for VI or IX and their finer gear steps. Against the Emil and Emilia family, which appear as a comfort-focused entry option with an upright position and gear unit, this bike acts leaner and more reduced to the essentials: frame, belt, lighting and battery.

A female counterpart exists as well: the ANTONIA range carries the same Pinion and Mahle combinations, yet is built as a step-through with a lowered top tube and an additional XS frame. Anyone who prefers an upright riding position chooses that silhouette, while the diamond frame of this bike combines a sporty-classic seat position with an upright back. Both lines share drivetrain and lighting technology – the difference lies in frame shape and gear concept.