LYCOS RETRIEVER 
Yo: Fixed Axles
built 618 days ago
All fixed axle yo-yos: One loop. Two are preferred by some for looping, and three can be used for very young children so the yo-yo doesn't sleep, making it easier to get it back to the hand.
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The foremost modern advancement to yo-yo design was Pedro Flores' creation of the slip string. Some would argue that the advent of durable metal axles was an advancement. Others say that only wooden axles offer the proper friction to make a truly playable yo-yo. San Francisco yo-yo entrepreneur Tom Kuhn has invented a system that addresses both durability and spin. His yo-yos have a replaceable wooden sleeve that fits over a steel axle. His latest creation replaces the fixed axle altogether.
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Fixed axle yo-yos do not sleep as long as transaxle yo-yos, but can make better loopers. Although you can unscrew the two halves of some fixed axle yo-yos to remove string tangles, many cannot be taken apart, so make sure you know your fixed axle yo-yo can come apart before you try!
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This method of adjustment is relevant mainly to the traditional yo-yo design with a fixed axle. On a yo-yo with a transaxle (see below), the string is looped and then tightly knotted around the bearing or sleeve.
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Fixed Axles