Schmidt Son 28 hub dynamo wheel with DT Swiss G 540 rim

The 28-inch front wheel with the Son 28 dynamo, Boost thru-axle mountand the G 540 rim from DT Swiss for road, cyclocross and gravel use.

The SON 28 hub dynamo from Schmidt offers excellent smoothness and very high efficiency. Manufactured and developed in Germany, Schmidt dynamos generally last longer than the bikes in which they are fitted. The ideal complement is Schmidt’s Edelux lights, as the SonDelux lights are particularly low-loss yet still provide plenty of light even at low speeds.

Schmidt Son 28:

In the standard version, the flange spacing and bearing spacing are increased by 12 mm and 10 mm respectively compared to the SONdelux. Compared to the predecessor model, the SON 28 Classic, idle losses have been reduced by approximately 15 per cent and the weight by 140 g. The SON Schmidt Original Hub Dynamo, 28 Hub Dynamo, has been the standard for high-quality, fail-safe bicycle lighting for years and, as a result of its design, remains unmatched even by new products from much larger companies. The secret lies in its gearless construction using high-quality materials and the adherence to tight tolerances, which is likely only achievable through handcrafting by a dedicated small team. The dynamo is simply switched off electrically. Thanks to optimisation, the no-load losses when switched off amount to just 1 watt and are imperceptible even to the most sensitive riders whilst cycling.

DT Swiss G 540 rim:

The sturdy and affordable DT Swiss G 540 DB Gravel rim with a 24 mm rim width for use on forest and field tracks and off-road. Designed for tyre widths up to 53 mm, the G 540 rim offers high strength and low weight. Well-finished, the DT Swiss G 540 offers excellent value for money. Recommended for riders/systems up to 130 kg. The reliable rim for use and thousands of worry-free kilometres on all trails and off-road. The G 540 rim has been developed precisely for this purpose and delivers unbeatable value for money.

Wheel building at TNC-Hamburg:

We hand-build these wheels exclusively for you. Thanks to over 30 years’ experience in wheel building, we extract the optimum in roundness, durability and stiffness from the material. These wheels are, of course, pressure-tested multiple times, and we also pre-load the spokes in both the radial and lateral directions. This eliminates the need for re-truing over a long period of time. We use DT Swiss spokes exclusively. These ensure outstanding durability of the wheelsets. For DH and Enduro use, we recommend brass nipples.

These wheels are custom-made for you, so we cannot offer a right of return for them. Please feel free to enquire about other wheel configurations. We will then send you a quote.

Included in delivery:

Front wheel, fully laced in our workshop and hand-centred with a Son 28 hub dynamo, DT spokes, DT nipples as selected and a DT Swiss rim. Excludes rim tape and valve

Schmidt SON 28 hub dynamo Technical data:

• Electrical output: 6V / 3W according to StVZO approval: ~~~ K 179
• Permitted wheel sizes: 16–29 inches
• Efficiency: 65 per cent at 15 km/h Power consumption at idle: 0.5 watts at 15 km/h
• Magnetic rotor: Neodymium-iron-boron, 26-pole
• Connection: 4.8 mm flat plug, two-pin, potential-free
• Cabling: Coaxial cable, PVC-free, 3 mm
• On/off switch: Switch in headlight housing
• Bearing: Deep groove ball bearing 629 2RSH
• Seal: Gap seal, sealing washers and pressure equalisation system
• Hub shell: Polished 6082 aluminium Number of spoke holes: 36 or 32 Weight: 460 g, excluding quick-release axle
• Axle: Hollow axle made of cold-hardened, stainless steel
• Scope of delivery: Schmidt’s original hub dynamo
• Recommended lamp: Schmidt SON Edelux
• Brake disc mounting: Disc 6-hole or Centerlock
• Available as:
  • Boost 12x110 mm thru-axle mount
  • Boost 15x110 mm thru-axle mount

DT Swiss G 540 Disc rims Technology:

• Intended use: Cross Road, Gravel
• Suitable for use with disc brakes only
• 28 inches, 700 C
• ETRTO 622 x 24
• ERD 592 mm
• Material: Aluminium EN AW-6061 T6
• Width 28 mm, height 25 mm, rim width 24 mm
• Recommended tyre widths 30–53 mm
• Tubeless Ready
• Recommended tubeless rim tape 27 mm
• Recommended tubeless valve 25 mm
• Valve hole 6.5 mm
• Weight 565 grams
• Max. system weight 130 kg
• ASTM classification 2

DT Competition spokes:

The double cold-forged spoke made from rust-resistant 18/10 chrome-nickel steel with a tapered middle section for robust, lightweight wheels. We recommend these spokes for virtually all wheels. Extremely durable and sufficiently lightweight, DT Competition spokes enable wheel building of the highest standard. Thanks to the tapered middle section, the spokes absorb movements in the wheel exceptionally well, without compromising on lateral stiffness or durability. Weight with nipple approx. 7 grams

DT Swiss Aero Comp spokes:

Designed for stable, laterally stiff yet aerodynamic wheelsets, the DT Swiss Aero Comp spoke is first cold-forged in the middle section to make it lighter and stronger. In a further complex process, it is flat-forged to optimise aerodynamic properties whilst simultaneously increasing material strength. The DT Aero Comp guarantees a balanced combination of stiffness, aerodynamics and durability.

DT Swiss Aero Lite spokes:

The DT Swiss Aerolite spoke is flatter and lighter than any other; the DT Swiss Aerolite spoke features an aerodynamic flat profile and is extremely lightweight. Thanks to the 0.9 x 2.3 mm aerodynamic mid-section, this spoke can be fitted to all standard hubs. The Cold Forging Technology (CFT) developed by DT Swiss makes the reduced and forged DT Aerolite the lightest stainless steel spoke and gives it excellent mechanical properties. Particularly suitable for super-light and fast road or cross-country wheelsets. 64 DT Aerolite spokes weigh an incredible 278 g at a length of 264 mm. Weight per spoke at a length of 264 mm: 4.31 grams

DT Swiss Pro Lock Squorx Pro Head spoke nipples:

The Squorx Pro Head nipples are required for the new DT Swiss rims in the new tubeless-ready series. Want to increase the lifespan of a wheel several-fold? That’s only possible with DT Pro Lock! This nipple features an integrated thread-locking system, developed and manufactured by DT Swiss. The two-component adhesive in the nipple thread prevents the spoke-nipple connection from loosening under the influence of operational loads and the loading and unloading of the wheel whilst riding, thereby ensuring constant spoke tension.

Herstellerinformation: