The Schmidt SON28 48-Hole Tandem Dynamo Hub is a premium, ultra-durable generator hub specifically engineered to handle the intense structural demands of tandem bicycling and heavy cargo touring. To safely accommodate the high 48-spoke count, this heavy-duty variant is built with custom, oversized flanges that distribute spoke tension evenly and create a remarkably stiff, resilient wheel. High-Load Strength: Optimized 48-hole drilling provides maximum wheel stability for team riders, heavy luggage, or rugged touring terrain. Efficient Power Generation: Supplies a reliable 6V/3W output to power headlights, taillights, or USB chargers, reaching full electrical efficiency at low riding speeds. Advanced Weather Sealing: Utilizes Schmidt's proprietary pressure compensation system to prevent moisture and dust from entering the cartridge bearings during temperature shifts. Classic Aesthetics: Features a durable, silver anodized finish that resists corrosion while maintaining a timeless look.