Most solar bike builds bolt a panel flat onto the frame and accept whatever trickle comes in. hanoverview took a different path: a recumbent tadpole trike towing an enclosed two-wheeled cargo trailer whose hinged wooden top carries three photovoltaic panels, one large central panel plus two cantilevered extensions. A trailer was chosen because it is cheap, which the maker names as the main idea, and that budget-first towed array is what separates this from the usual frame-mounted approach.
The trike itself is a black recumbent frame with pedal chain drive, a reshaped sheet-metal bucket seat, front wheel steering with disc brakes, and a rear rack holding pannier bags of LiPo packs joined by high-current yellow plugs. A white electrical enclosure behind the seat carries toggle switches for power control, and there is a frame-mounted USB port plus a central LED lamp with dual lower-mounted LED spotlights up front.
Several details stand out. The outer panels run in series at 24V into dual boost controllers, while the central panel delivers a nominal 19V, and the whole system charges a 48V battery. Inside the trailer, wiring leads to an aluminum finned heat sink unit and two digital charge controllers labeled MPT-7210A. On the road, the controller displays fluctuated between 5W and 130W as sunlight changed, and after a short trip the maker reports the bike can easily run on solar alone when the sun is out. Total solar comes to 440W, with flat panels making around 250W, enough to push the bike. The rear also wears reflective markers and a hazard emblem reading CAUTION LOW FLYING AIRCRAFT. One thing is still open: an overhead mount is being considered, but money is expensive, so that idea remains undecided.
During the road test the propulsion ran directly on solar generation, and rewiring the system was part of the process. Opening the trailer to read the digital displays rounds out a tidy, coherent machine.
Project by hanoverview. Watch it on their YouTube channel: