Weave and Wobble

What is a weave?

The weave is a wander which occurs at high speed and starts with a rear-end oscillation. The wander is severe and eventually the whole machine “weaves” in a snake-like and alarming manner.

When does the weave usually occur?

The weave usually occurs at speeds in excess of 60 mph and is particularly likely to occur on curves when the bike is leaning and under stress.

How can you correct this problem?

Instinctively, everyone wants to “dump” speed quickly. Do not change speed by acceleration or braking while the weave is occurring, just lay your head and upper torso down on top of the gas tank and it will disappear – then slow down gradually and locate the problem.

What are some things that may cause a weave?

The problem could be a number of things:

• improper loading
• tire wear
• tire inflation
• mismatched tires
• rider weight and distribution (light riders are more prone to this stability problem)
• pavement seams or surface conditions
• worn or loose parts and bike design

What is a high speed wobble?

A wobble is the result of an uncorrected weave, whereby the rear-end oscillation has passed through the frame and is transmitted to the front forks.

It is very frightening and can become a “tank slapper” within a few seconds ending in a crash. It need not!

The wobble is extremely violent and occurs rapidly. It is very “weight-related.” Light riders seem to be more prone, whereas heavy riders or riders with passengers seldom experience high speed wobble.

Some of the same reasons for “weave” also contribute to “wobble” but added to that list is a handle bar mounted faring or windshield and a travel trunk mounted high and mostly to the rear of the rear tire.

Once in a “wobble” speed of action is essential. You have 2 – 3 seconds to do something. Don’t change speed.

Lift your butt just off the seat, transferring the majority of your weight to the pegs, lie down on the gas tank getting your head as far forward as possible. This has the overall effect of shifting the center of gravity forward and downward which is what we’re looking for.

After this, the wobble will stop, but not immediately. Be a little patient and hold your nerve. Once the wobble subsides, slow down gently.

If you don’t slow down and sit back up, the wobble will re-appear quickly and usually more violently.