The national defense brand bicycle is a kind of bicycle produced by Qingdao Bicycle Factory, which is divided into heavy national defense brand bicycles or ordinary national defense brand bicycles, commonly known as "big national defense" and "small national defense". The rear wheel adopts reverse wheel braking, which can be braked by gently tilting backwards, and the front wheel adopts lever to touch the brake, which has strong braking force. 1952 started production, and 1967 was changed to Jin Lu brand bicycles.

Extended data

Features:

The handlebar is shallow U-shaped, the beam is thick, the cowhide base is thick and firm, and the back seat is square, which is very convenient for carrying people and goods. But the car is very heavy, only half as heavy as the car. The biggest difference with cars is that the brakes are not on the handlebars, but on the pedals. As soon as the pedal fell backwards, the car stopped immediately, which was particularly good. Another main feature is "three big ones and one hanging" (big flywheel, big toothed plate, big buckle chain and hanging spring saddle).

Baidu encyclopedia-national defense brand bicycles