Mini V4 Brass Steam Engine Model Reverse Gearbox (without Boiler) Teching New and brand new design

New and brand new design of 2017

Output Voltage: regulated 12V (within 0

Is the synchronization timing belt adjusted to the correct position

it will affect the performance

Special part for TOYAN

Mini V4 Brass Steam Engine Model Reverse Gearbox (without Boiler) Teching New and brand new designMini V4 Steam Engine Model with Reverse Gearbox (without Boiler) Features: . Exquisite Appearance: The model of the steam engine is small and novel. It can be placed in the palm of your hand like a treasure. It is exquisite and mini. . Steam Engine Structure: Piston slide valve. . Reversing Structure: Forward and reverse two gears, automobile hand wave structure, often meshing fork gear. Miniature stainless steel crankshaft, with bearings at both