Spezi 2025-Invention Lab-Hydraulic Drum Brake Conversion Kit @GarySolomon
Spezi 2025-Invention Lab-Hydraulic Drum Brake Conversion Kit  @GarySolomon
Uploaded June 2025 | Updated September 2026, 2 weeks ago
Pieter from the Netherlands has come up with a clever hydraulic activated drum brake conversion. Taking the standard Sturmey-Archer brake he has created a kit to replace the mechanical version into a hydraulic version.

Here is Pieter Hollenbrandse's website: hollebrandseengineering.com

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Spezi 2025-Invention Lab-Hydraulic Drum Brake Conversion Kit

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