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The "Topas Deluxe SCH" model from Diamant, launched in 2021, is a stylish and functional bicycle that pays homage to the original 1912 design. The classic aluminium gooseneck frame not only gives the bicycle a nostalgic look, but also ensures a stable and durable construction. Weighing 17 kg, the Topas Deluxe SCH is a robust bicycle that is nevertheless light enough for everyday use.
The braking system consists of a Tektro aluminium V-brake at the front and a coaster brake at the rear, both with adjustable lever reach, ensuring reliable and controlled braking performance. The 7-speed Shimano Nexus Revo hub gear system allows for easy and precise gear selection, ideal for varying riding conditions in the city.
The rigid steel fork complements the bike’s classic look, whilst the Diamant retro LED front light and the AXA Ray Steady LED rear light ensure good visibility at night. The retro steel pedals with rubber pads provide a secure grip whilst riding.
The drivetrain consists of a forged aluminium crankset with 38 teeth and a Shimano 19-tooth sprocket, combined with a KMC S1 chain. The Humpert Courier handlebars and the stitched retro grips from Diamant contribute to comfort on longer rides.
The cold-forged aluminium stem with stainless steel bolts ensures stable steering. The Schwalbe Fat Frank tyres, featuring KevlarGuard puncture protection and reflective strips, offer additional protection and visibility in traffic. The Bontrager wheelset is robust and durable, whilst the Shimano C3000 hub dynamo ensures a reliable power supply for the lights.
The retro saddle from Diamant, featuring steel springs, offers comfort, whilst the Bontrager aluminium seatpost provides additional stability. The Büchel Metall Nirosta mudguards protect against splashing water, and the Atran Moove kickstand makes parking easy. The retro steel luggage rack is InterChange-compatible, making it easy to attach panniers.
Priced at 849 EUR, the Topas Deluxe SCH offers excellent value for money for anyone looking for a classically designed yet modern bike. The bike’s dimensions are well thought out, with a seat tube length of 45 mm, a top tube length of 58 mm and a wheelbase of 108 mm, ensuring a comfortable and stable ride.
| Rear brakes | Front: Tektro aluminium V-brake, rear: coaster brake Tektro, aluminium, adjustable grip width |
| Front brakes | Front: Tektro aluminium V-brake, rear: coaster brake Tektro, aluminium, adjustable grip width |
| Frame | Classic aluminium ‘Diamant’ gooseneck frame, modelled on the original from 1912 |
| Shift levers | Shimano Nexus Revo 7-speed gear lever |
| Fork | rigid steel fork |
| Crankset | Forged aluminium, 38 teeth |
| Sprocket | Shimano 19 teeth. 26": 16 teeth |
| Drive | KMC S1 |
| Handlebar | Humpert Courier, 25.4 mm |
| Grips | Diamant Retro re-stitched |
| Stem | Steerer stem, Ø 25.4 mm, 80 mm extension, cold-forged aluminium, stainless steel bolts |
| Saddle | Diamant Retro with steel springs |
| Seatpost | Bontrager, aluminium, 27.2 mm, 12 mm offset, 330 mm length |
| Wheelset | BONTRAGER, RIM, 2019, CONNECTION, 26'', 36H, CLINCHER, MACHINED, NON-TUBELESS, PRESTA, SYMMETRIC, PINNED SEAM, NON-EYELETED, 20MM INNER HOOK BEAD, DOUBLE WALL, ANODISED SILVER, NEUTRAL GRAPHIC // Shimano C3000 hub dynamo ASG7C30AR 36x127x175.5 STEEL 7-SPEED |
| Tires | Schwalbe Fat Frank with KevlarGuard puncture protection, reflective strips, 50-622. 26": Schwalbe Delta Cruiser, reflective strips, 47-559 |
| Pedals | Retro steel with rubber overlay |
| Front light | Diamant Retro, LED |
| Rear light | AXA Ray Steady with parking lights, LED |
| Mudguards | Büchel Metall Nirosta |
| Kickstand | Atran Moove |
| Rack | Diamant Retro Steel, InterChange-compatible |