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A hub dynamo is a small electrical generator built into the front hub of a bicycle wheel that is usually used to power lights. Often the hub "dynamo" is not actually a dynamo, which creates DC, but a low-power magneto that creates AC. Most modern hub dynamos are regulated to 3 watts at 6 volts, although some will drive up to 6 watts at 12 volts.
Bottle dynamo mounted on a bicycle. Dismantled bottle dynamo. Left: Housing with internal permanent magnet rotating through the friction wheel. Right: Induction coil. A bottle dynamo or sidewall dynamo is a small electrical generator for bicycles employed to power a bicycle's lights.
Magnetic bike lights. Lights can be self-powered via electromagnetic induction, eliminating the need for batteries or dynamo systems. The advantages are similar to those of dynamo lighting. The most common design includes a magnet on the wheel spoke and lights with a coil in them, mounted on the frame or fork of the bike.
Hot Wheels remain one of the coolest gifts kids can open on Christmas morning. This set is more than half off today, and it comes with a swirling track and blue car. $20 at Walmart
This model comes with all-day battery life, a high-performance processor and 64 GB of hard drive capacity — and now you can pick it up for under $140. $139 at Walmart Walmart deals : Fall refresh
Dynacraft BSC, Inc. is a privately held United States–based distributor of bicycles, scooters, battery-operated ride-on, and electric ride-on.Dynacraft is based in Port Wentworth, Georgia, and has its distribution center located there as well.
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