What is a bicycle lug?

What is a bicycle lug?

A lug is a jacket, sleeve or fitting that joins two tubes together — think of PVC pipe fittings. Lugs can be found on almost any type of frame material including carbon. Carbon-fiber lugs. ... Custom bike builders often make their own, but lugs can also be purchased generically. Carbon lugs are glued on.

What are cast lugs?

Lugs are provided on castings to enable the cast part to be held firmly. The lug on the cast elbow shown on the right, for example, allows the awkwardly shaped part to be held in a fixture for machining processes.

Are lugged bikes good?

One of the benefits is that the tubes themselves are not melted. So, if you crash and bend a top tube, for instance, it can be replaced and the frame made good as new. It comes down to this: Good lugged frames are 10x as nice to look at as welded frames are, and they're much easier to repair.

How are bike frames joined?

The traditional method of bicycle frame construction uses lugs, or sleeves, that house the frame tubes at their junctions. The lugs and tubes are heated, and filler metal is directed so that it flows into the lugs, forming a joint. Another way bikes are joined using brazing called is fillet brazing.

What does lug mean?

LUG

Acronym	Definition
LUG	Local User Group
LUG	Logic Users Group
LUG	Lock Up Garage (in real estate advertisements)
LUG	Lesbian Until Graduation

What are bike dropouts?

A bicycle dropout (drop out, frame end, or fork end), is a slot in a frame or fork where the axle of the wheel is attached. On bicycles that do not have a derailleur or other chain tensioning device, rear horizontal dropouts allow adjustment of chain tension, and can accommodate a range of chain lengths or cog sizes.

Why are lugged frames better?

In most lugged steel frames, the lugs have a simple pointed shape. ... Lugs also reinforce the joints, often resulting in a stronger frame, this gives lugged frames in particular an advantage for touring cyclists.

Are lugged frames stronger?

In theory, the lugged frame can be lighter and stronger, but that theory has been reduced to opinion by TIG welding and fillet brazing techniques. The only structural advantage for certain is cheaper repairs. I own 3, they're sexier. At this point, just aesthetics.

What does lug mean in texting?

LUG — Little Ugly Guy.

How are lugs used to build bicycle frames?

It also has an opening in which to insert the seat post, and a clamp to hold the seat post securely in place. Lugged steel frame construction is a method of building bicycle frames using steel tubing mated with socket-like sleeves, called lugs.

What's the difference between a nut and a lug nut?

Some designs (Audi, BMW, Mercedes-Benz, Saab, Volkswagen) use lug bolts or wheel bolts instead of nuts, which screw into a tapped (threaded) hole in the wheel's hub or drum brake or disc. This configuration is commonly known as a bolted joint .

What are the different types of steel lugs?

Types of lug. Traditional stamped lugs (aka pressed lugs) are formed by pressing sheet steel over a mandrel, bending them to shape, and then welding the seams. These lugs are of constant thickness resulting in stress risers, if large amounts of file work are not done to alter the thickness of the lug.

Where are bicycles made out of lugged steel?

The utility bicycles manufactured in large quantities in China and India, (such as the Flying Pigeon) and exported to countries in the region, are made from lugged steel. Wikimedia Commons has media related to Bicycle lugs. ^ Juden, Chris (September 2006). "Alloy Touring Frames". Cycling. Godalming, England: Cyclists' Touring Club.