The cycle of the unicycle is very important, not only to bear the weight of human body, but also to bear the impact of the ground and obstacles.It can be said: push up pressure left and right, horizontal thrust torturing it.It is best to use ordinary wide circles, especially suvs.The transverse stability of the narrow and v-shaped ring (also known as the knife ring) is poor, and when the horizontal thrust is from the left and right direction, it is easy to bend and break (commonly known as the fold).The quality of the circle is not negligible.-.Car ring material description.1: titanium carbon fiber car ring, the price and its expensive, very few.Nylon steel circle is a layer of nylon plastic coated steel, engineering plastic circle, cast aluminum ring hub wheels, glass fiber reinforced plastic, and so on using less.so don't do too much to discuss, focus on the commonly used steel and aluminum alloy rim2.Aluminum alloy circle for short.The material is also different, no more detailed.Simple divided into high quality, ordinary, inferior.Three categories.The aluminum ring is divided into single layer and double aluminum ring.1) the single-layer strength is slightly lower and is used for ordinary occasions.At present, the low quality circles are single layer, the cost is very low, 100 yuan of poor quality wheelbarrow, 200 yuan of poor quality bicycle, aluminum ring for the price of the size of 7-10 yuan.The material is extremely poor, the wall is too thin, easily damaged.2) high strength and good stability of double-layer aluminum coil.Life is long, the price is more expensive, most of the price is concentrated in 70-250 yuan.Mainly used in medium and high - grade cars.(3) surface treatment of aluminum ring.Passivation (surface oxidation to form protective film), color spray paint, coloring, coating, ceramic hardening (improve surface hardness), etc.Some will edge the side.Specific choices are based on personal preference.Surface treatment is only anti-oxidation corrosion, looking beautiful.Don't go for it.Otherwise, when you pay more, manufacturers often create concepts, selling points, and malicious speculation.If you're not careful, you'll get it.3.The steel ring is referred to as the steel ring.Material, thickness, shape and width are different, different.Just focus.Good steel ring is made of high quality steel and durable.Surface finish high, use electroplating, electrostatic baking paint and even liquid baking paint.Poor quality steel ring material, thin wall, easy to damage.Low plating level, even nickel instead of chromium, reduced cost.Surface plating is easy to fall off and rust corrosion.The paint is usually painted with ordinary paint or even with ordinary metal paint.Four.Engineering plastic circle is referred to as plastic ring.Plastic ring strength is low, especially fragile, easy to break damage.Easily aged.Manufacturing and installation costs are very low.Shorter life spans in areas with high temperatures and low temperatures.People with large body weight should pay more attention to safety.The advantage of plastic ring is that the spokes are changeable in color, low in cost and quick in installation.Don't fix it, get rid of it and replace it as a whole.