Bicycle Frame Jig

Bicycle Frame Jig

A motorcycle frame jig is the best way to keep components in place when fabricating a bike frame. Typically mounted on wheels it lets the fabricator turn the frame while working. This is advantageous when you are pulling a long hose connected to a welding tank. Although it will not keep the frame "straight and true", it will keep the various tubes in place for welding. The welding process itself can distort the tubes as they are heated. The use of this device will allow the custom designer to work alone. This apparatus also lets you put the frame off to a corner when you are not actively working on it.

Almost all commercial motorcycle frame jigs have solid steel bases, making them extremely sturdy. While each one has a pinion to hold the frame neck, some will also incorporate devices to support the swing arm. Typically, depending on the manufacturer, holes exist in the holding device that will align to holes in the tubes for other mounting purposes. Some of these supportive structures are homemade, and can vary greatly. The basic rule is to make the base very sturdy and to have plenty of mechanisms for holding the framing tubes upright while you work. Using actual frame components as part of the jig fixtures can be extremely useful.

Whether you purchase a ready-made apparatus from a dealer or you decide to build your own, it is much easier to fabricate using a motorcycle frame jig. Another great plus is that some of these devices have built-in engine stands. Almost all of the commercial models will hold the completed frame for inserting the engine with a hoist. This can also be convenient when debating how to clean fuel injectors without bending over backward. There are multitudes of jig designs in use in homes, garages and custom workshops. Find one or make one that will work well for the frame you are fabricating.

Bicycle Frame Jig