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The "Robert/a R7 400" model from Hercules, released in 2022, is a city trekking e-bike that stands out for its robust construction and well-thought-out features. It is fitted with an AL 6061 aluminium frame, which ensures stability and durability. The maximum load capacity is 135 kg, whilst the bike itself weighs 27 kg.
Braking performance is provided by Magura HS-11 hydraulic rim brakes, which are both precise and reliable. These are complemented by the brake levers of the same name. Gear changes are controlled via the Shimano Revoshifter, which allows for simple and intuitive operation. The SR Suntour CR85-E25 P fork, with 63 mm of travel, ensures a comfortable ride on a variety of surfaces and is also adjustable.
The bike is lit by a Comus F16 LED front light with up to 20 lux and a Comus R-232EB rear light mounted on the luggage rack, ensuring good visibility even in poor lighting conditions. The Wellgo pedals are non-slip and offer a secure grip. The crankset is an FSA CK-220, and the drivetrain is powered by a KMC Z1EHX chain.
The handlebars are a Kalloy Tour model, 660 mm wide with a 37° backsweep, complemented by Ergo 2D grips for added comfort. The stem is also from Kalloy; it is adjustable and, together with the semi-integrated headset, ensures comfortable steering geometry. The DBM-2 rims are fitted with Supero 50-622 tyres, which feature Optima Safe puncture protection. The front hub is a Formula OV-31 with a quick-release mechanism, whilst the rear hub is a Shimano Nexus with a 7-speed internal gear hub and coaster brake.
The saddle, a DDK City DDK-225A2, sits on a rigid Kalloy SP-F102 seatpost. Plastic mudguards with V-struts protect against splashes and dirt. A Horn Catena 18 chain guard provides additional safety. The Standwell kickstand provides stable support when parked.
The bike is fitted with an i-Rack luggage rack with a spring-loaded flap and features an AXA battery lock to secure the battery. The motor is an Active GEN3 model with an output of 250 watts and a torque of 40 Nm, powered by a Bosch carrier-type battery with a capacity of 400 Wh. It is controlled via the Bosch Purion display, and the charger has an output of 2A.
With a reach of 394 mm and a stack of 673 mm, the Robert/a R7 400 offers balanced geometry that is suitable for both city riding and longer tours. This model is priced at 2299 EUR, making it an attractive option for those looking for a reliable and well-equipped e-bike.
| Brakes | hydraulic rim brake, Magura HS-11 |
| Brake levers | Magura HS-11 |
| Frame | Aluminium Trekking City, AL 6061 |
| Shift levers | Shimano Revoshifter |
| Fork | SR Suntour CR85-E25 P, 63 mm travel, adjustable / 26": NEX-P |
| Fork travel (mm) | 63 |
| Crankset | FSA CK-220 |
| Drive | KMC Z1EHX |
| Headset | semi-integrated |
| Handlebar | Kalloy Tour, AL, 660 mm / 37° backsweep, 31.8 mm |
| Grips | Ergo 2D |
| Stem | Kalloy, AL-822, adjustable |
| Saddle | DDK City DDK-225A2 |
| Seatpost | Kalloy SP-F102, rigid |
| Seat clamp | QR, black |
| Rims | DBM-2 |
| Tires | Supero 50-622, Optima Safe puncture protection |
| Spokes | Steel, black, 2 mm /HR: reinforced |
| Pedals | Wellgo, C-157, non-slip |
| Front light | Comus F16, LED, up to 20 lux |
| Rear light | Comus, R-232EB, rear light for luggage rack |
| Mudguards | Plastic with V-braces |
| Kickstand | Standwell, SW-RA031J, 40mm |
| Rack | i-Rack, system bracket with spring-loaded flap |
| Motor manufacturer / model | Active, GEN3, 250 watts, 40 Nm |
| Display | Bosch Purion |
| Battery | Bosch Carrier Type |
| Battery capacity (Wh) | 400 |
| Charger | Bosch 2A |