Reverse Gearbox for V4 Steam Engine

What is Reverse Gearbox for V4 Steam Engine?

The Reverse Gearbox for V4 Steam Engine is a compact, all-metal transmission component designed specifically for use with mini V4 steam engine models. Measuring 3.5 x 3.3 x 5.6cm and weighing 120g, this gearbox enables bidirectional operation through a fork-and-clutch reversing mechanism. Built for durability and efficiency, it features full brass gearing, stainless steel structural plates, and dual bearings—including on the secondary gear—to minimize friction and power loss during operation.

Key features

• Reversing Mechanism — Fork-and-clutch system enables seamless forward and reverse gear switching.
• All-Brass Gears — Ensures durability, smooth meshing, and resistance to wear over time.
• Stainless Steel Plate — Provides structural rigidity and corrosion resistance.
• Dual Bearings — Main and secondary shafts supported by bearings for reduced friction.
• 1:1 Gear Ratio — Maintains original input speed with no reduction (36:36 tooth count).
• 3mm Output Shaft — Compatible with standard couplings and drive systems in model engines.
• Compact Dimensions — Fits tightly integrated model engine assemblies without bulk.

Who is Reverse Gearbox for V4 Steam Engine for?

This gearbox suits mechanical model builders, hobbyists, and steam engine enthusiasts aged 14 and up. It's ideal for those upgrading or expanding a V4 steam engine model with directional control. Intermediate-level DIYers with basic mechanical understanding will appreciate its precision engineering and reliable performance in kinetic art, educational displays, or functional miniatures.

How does Reverse Gearbox for V4 Steam Engine compare?

Compared to standard plastic or single-bearing gearboxes, this metal unit offers superior durability and smoother operation. Unlike fixed-direction transmissions, its clutch-based reverse function adds functional versatility. While similar in size to other mini gearboxes, the use of all-brass gears and dual bearings sets it apart from lower-cost alternatives that sacrifice efficiency for price.