BicycleCinema.org
Commissioned diagram of the ADFC Rhein-Neckar mobile bicycle cinema with its battery bridging rider changeovers
ADFC Rhein-Neckar mobile Fahrradkino — Roller-dynamo stations → battery that explicitly bridges rider changeovers; audiences up to 200 since mid-20242,4,1,3 Image: BicycleCinema.org, drawn from the research corpus

ADFC Rhein-Neckar mobile Fahrradkino

Germany · Nonprofit association

Active last verified 2026-09
Battery-buffered AC
8 roller-dynamo stations (Ökotrainer)Documented

Websitehttps://rhein-neckar.adfc.de/

ADFC Rhein-Neckar, a regional chapter of Germany's cycling federation, has run a mobile Fahrradkino for up to 200 people since mid-2024. The volunteer-run chapter describes its battery as bridging the pauses when riders stop to catch their breath, not as backup for equipment failure.

Key facts

  • Fleet

    8 roller-dynamo stations (Ökotrainer)1

    Documented

  • Capacity

    Up to 200 people2

    Documented

  • Active since

    Mid-20242

    Documented

  • Buffer role

    Explicitly bridges rider changeovers2

    Documented

The cinema runs on eight roller-dynamo stations of the commercially supplied Ökotrainer type: each bicycle is clamped with a generator roller pressed to the rear tyre, and the current charges a battery buffer before reaching the projector and sound system. A screening of "Zwei zu Eins" at Eberbach in 2026 is documented by the town itself. A second chapter, ADFC Schwetzingen, runs a comparable 8-bike Ökotrainer set, used at an asparagus-season opening event in April 2025 — the same supplier's hardware reaching audiences through the federation's local chapters rather than a national programme. No battery capacity, inverter rating or projector wattage is published for this chapter's installation; those figures exist for the Ökotrainer product line.

Specifications

What do these labels mean?

FieldValueConfidenceSources
Fleet8 roller-dynamo stations (Ökotrainer)Riders pedal against a roller pressed to the rear tyre.Documented1
Capacityup to 200 attendeesDocumented2
Buffer capacity and voltagenot disclosedThe chapter uses the commercially supplied Ökotrainer hardware; battery capacity and inverter rating are not published specifically for this installation.Not disclosed2,1
Schwetzingen chapter fleet8 bikes (Ökotrainer)A second ADFC chapter running comparable hardware, e.g. an April 2025 asparagus-season opening event.Documented3
Flyer for the ADFC Rhein-Neckar Fahrradkino film evening in Eberbach on 4 July 2026: a bicycle-and-film-reel graphic beside the poster of the film Zwei zu Eins
Image: Stadt Eberbach (eberbach.de) — via eberbach.de
Typographic panel paraphrasing the association's own description of the battery's role, marked as operator-stated
The battery bridges the pauses when riders stop to catch their breath (operator description)2,4,1,3 Image: BicycleCinema.org, drawn from the research corpus
Audience seated at tables before an outdoor screen beneath a concrete structure at Kaiserslautern's first Fahrradkino, 27 May 2026
Kaiserslautern's first Fahrradkino, 27 May 2026 — an eight-bike Ökotrainer set run by KL.digital, the same class of hardware ADFC Rhein-Neckar uses Photo: Stadt Kaiserslautern (kaiserslautern.de) — via kaiserslautern.de
Bicycles clamped into green Ökotrainer roller stands at Kaiserslautern's first Fahrradkino, 27 May 2026
Kaiserslautern, 27 May 2026: the Ökotrainer roller stands of KL.digital's eight-bike set — the same hardware class as the ADFC Rhein-Neckar cinema Photo: Stadt Kaiserslautern (kaiserslautern.de) — via kaiserslautern.de
  • Night-time open-air Fahrradkino powered by a row of Oekotrainer pedal stations: riders on the bikes at the left, audience seated on chairs, film on a large screen

    Oekotrainer.de

    Active last verified 2026-09

    Supplier of the roller-dynamo hardware this chapter operates

  • School hall at the Helmholtz-Gymnasium Karlsruhe, January 2026: bicycles on red roller trainers in the foreground, pupils seated before the stage and screen

    KLAK / Solare Zukunft e.V.

    Active last verified 2026-09

    Comparable battery-buffered AC topology in the same German Fahrradkino ecosystem

  • Night audience at an Efecto Pedal pedal-powered screening

    Explainer

    Buffers: Seconds or Hours

    This profile's battery explicitly bridges rider changeovers, the subject of this explainer

Sources

  1. [1]Stadt Eberbach — Fahrradkino (ADFC Rhein-Neckar)www.eberbach.de
  2. [2]ADFC Rhein-Neckar — Kino dank Muskelkraftrhein-neckar.adfc.de
  3. [3]deutsch-polnische-nachrichten.eu, 22/25.04.2025 (ADFC Schwetzingen)deutsch-polnische-nachrichten.eu
  4. [4]Stadt Kaiserslautern, Pressemitteilung 28.05.2026www.kaiserslautern.de

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