Schmidt Son 28 hub dynamo wheel with DT Swiss RR411 rim

The 28-inch front wheel with the Son 28 dynamo and the robust and lightweight RR 411 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 they are fitted to. 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, no-load losses have been reduced by approx. 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 RR411 DB Rim:

The RR 411 road and cyclocross rim from DT Swiss for use with disc brakes, very light at just 410 grams and stable thanks to a high-strength aluminium alloy and 21.5 mm rim width. The rim’s asymmetrical design allows for more even spoke tension, which significantly increases stability and service life. Cleanly finished, with a welded joint, CNC-machined sidewalls and a 21 mm high rim bed, the DT Swiss RR 511 DB is the ideal rim for building very lightweight wheelsets.

The DT Swiss RR 411 DB rims are high-end rims with a special spoke nipple mount and are supplied with special DT Squorx Pro Head nipples and PHR washers; they must only be laced using these nipples. Furthermore, the DT RR 411 rims are tubeless-ready.

Wheel building at TNC-Hamburg:

We hand-build these wheelsets exclusively for you. Thanks to over 30 years’ experience in wheel building, we extract the optimum in concentricity, durability and stiffness from the material. These wheelsets 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-centring 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-trued 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 in accordance with StVZO approval: ~~~ K 179
• Permitted wheel sizes: 16–29 inches
• Efficiency: 65 per cent at 15 km/h Idle power consumption: 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:
  • 9x100 mm quick-release mount
  • 12x100 mm thru-axle mount
  • 15x100 mm thru-axle mount

DT Swiss RR 411 DB Aero Technology:

• Recommended for riders up to 110 kg
• 28 inches, 700 C
• ETRTO: 622 x 18 mm
• ERD 601 mm
• Aluminium rim
• SBTW welded joint
• Width 21.5 mm Height 21 mm
• Maximum tyre width 21–42 mm
• Recommended rim tape: 622 x 18 mm
• Weight 410 grams

DT Swiss Competition spokes

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

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 X 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 cycling of the wheel during riding, thereby ensuring constant spoke tension.

Herstellerinformation: