![An old cigarette card (c. 1929) with a portrait of Louis Brennan CB (1852–1932) and an illustration of his monorail train. Brennan was an Irish-Australian mechanical engineer and inventor. The gyro monorail, An old cigarette card (c. 1929) with a portrait of Louis Brennan CB (1852–1932) and an illustration of his monorail train. Brennan was an Irish-Australian mechanical engineer and inventor. The gyro monorail,](https://c8.alamy.com/comp/2CA3WCG/an-old-cigarette-card-c-1929-with-a-portrait-of-louis-brennan-cb-18521932-and-an-illustration-of-his-monorail-train-brennan-was-an-irish-australian-mechanical-engineer-and-inventor-the-gyro-monorail-gyroscopic-monorail-gyro-stabilized-monorail-or-gyrocar-are-terms-for-a-single-rail-vehicle-that-uses-the-gyroscopic-action-of-usually-two-spinning-wheels-to-overcome-the-inherent-instability-of-balancing-on-a-single-rail-the-gyro-monorail-was-never-developed-beyond-the-prototype-stage-and-the-illustration-here-is-purely-a-fantasy-view-of-what-might-have-been-2CA3WCG.jpg)
An old cigarette card (c. 1929) with a portrait of Louis Brennan CB (1852–1932) and an illustration of his monorail train. Brennan was an Irish-Australian mechanical engineer and inventor. The gyro monorail,
![The Brennan Gyro-Monorail: The World's First Single-Track Railcar That Was Never Developed Beyond the Prototype Stage | Vintage News Daily The Brennan Gyro-Monorail: The World's First Single-Track Railcar That Was Never Developed Beyond the Prototype Stage | Vintage News Daily](https://vintagenewsdaily.com/wp-content/uploads/2020/01/brennan-gyro-monorail-1-1-640x381.jpg)
The Brennan Gyro-Monorail: The World's First Single-Track Railcar That Was Never Developed Beyond the Prototype Stage | Vintage News Daily
![Photograph of Louis Brennan's Gyro monorail, a single rail land vehicle that uses the gyroscopic action of a spinning wheel to overcome the inherent instability of balancing on top of a single Photograph of Louis Brennan's Gyro monorail, a single rail land vehicle that uses the gyroscopic action of a spinning wheel to overcome the inherent instability of balancing on top of a single](https://c8.alamy.com/zooms/6/74fa747005ef4508b76c1340a77266db/mr4w3e.jpg)