Hongdu engine for Velosolex / Solex

Two-stroke engine, identical with Velosolex (Velo-Solex)
Build by Hongdu in China
In running order as illustrated with carburetor, fuel tank and exhaust
Drives every wheel up to 2.5 inch (6.3 cm) width by friction roller.
Applicable as auxiliary engine for bicycles, tricycles, children vehicles etc.