How do internal gear hubs work?

Internal-gear hubs work on the principle of “planetary gearing.” Thus, the wheel turns 3 times for every 4 revolutions of the sprocket, lowering the gear by 25%. Middle Gear has the sprocket still driving the gear ring, but the gear ring drives the hub. Thus, the drive is direct.

What is a gear hub motor?

The geared hub motor and the stator are connected through a gear reduction system. Each time its case rotates, the internal gear rotates many times at a faster speed. This allows the motor to work at a faster and more efficient speed, while also allowing the wheels to spin at a relatively low speed.

What are internal hubs?

A hub gear, internal-gear hub, internally geared hub or just gear hub is a gear ratio changing system commonly used on bicycles that is implemented with planetary or epicyclic gears.

Why use an internal gear hub?

Here are other reasons to consider using an internal hear hub on your bicycle: One of the greatest advantages of an internal gear hub is that all the moving components essential for shifting are fully contained in a sealed unit which is the hub. This means that they are 100% protected from dirt, water, grime, road salt, debris, and the like.

How reliable are internal gear hubs?

Internal-gear hubs are more reliable than derailer systems, and require much less maintenance. The step-up ratios of their top gears make oversize chainrings unnecessary on small-wheel bicycles. Unlike derailers, internal-gear hubs can shift at a stop, very nice in stop-and-go urban traffic.

How does an internal gear hub work?

Internal gearing is so called because all the gears involved are hidden within a wheel hub. Hub gears work using internal planetary, or epicyclic, gearing which alters the speed of the hub casing and wheel relative to the speed of the drive sprocket. They have just a single chainring and a single rear sprocket,…

Is an internal gear hub right for You?

Internal gear hubs are excellent for bicycle touring or commuting- Many expedition bicycle tourists choose to ride with an IGH for more peace of mind. Commuters like them for the same reason. There is simply less to worry about in terms of maintenance and repairs.