Gnome Monosoupape 9B-2 was a 9-cylinder rotary engine rated at approximately 100 hp, representing a refined version of the earlier Monosoupape designs.

The “Monosoupape” (single-valve) system simplified the valve mechanism compared to earlier rotary engines, reducing mechanical complexity while maintaining reliable performance.

This engine was widely used in mid-war French aircraft and became one of the key rotary engines during this period.

Typical applications included:
• AMC DH.2
• Nieuport 17
• Various French-built fighter and reconnaissance aircraft

Engines of this type represent a mature stage in rotary engine development, combining simplicity with practical operational reliability.

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We keep Gaspatch Models sets in stock whenever possible. In case a particular item is temporarily unavailable, we can arrange a fast restock directly from the manufacturer.

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