Duncan yoyo's are a brand of yoyo toys. A man named Duncan was the founder of a yoyo company that he had purchased and then sold his yoyo toys. They are a famous brand.
The Duncan Butterfly is valuable both in price and in performance. It has a butterfly shape for forgiving yoyo play, and it also has a long spin time for string tricks. It is an ideal skill toy for the intermediate player.
the duncan website! but for the best prices, yoyonation or yoyoloco.
I think it does.
It can spin pretty fast. On impact, it can break a lot of things, including the yoyo.
because they have more advanced and better quality yoyos
Yoyos are classified by shape and the 3 are: 1) "Classic", also known as "Imperial" - These have been around the longest and include the Duncan 'Imperial', Duncan 'Speed Beetle', and the Team Losi 'Da Bomb'. They are best for looping tricks. 2) "Butterfly" - These are probably the most popular today and include the Duncan 'Butterfly', Henry's 'Viper', and Yoyojam 'Spinmaster'. They are best for string tricks and long spin or "sleep" times. Really complicated string tricks are almost always performed using a butterfly shaped yoyo. Butterflies are not considered to be the best starter yoyos. 3) "Modified" - These have rounded edges and are a good compromise between imperial and butterfly shapes. Good examples are the Duncan 'ProYo', Yomega 'Fireball', and the Spintastics 'Technic'. They loop well and are better than the imperial for string tricks. The modified shape is also considered to be a great beginners yoyo. Many other factors come into play such as materials, axel construction, weight, size, etc, but these are the 3 shapes, or "types" of almost all serious yoyos.
You add a ball bearing to the axle.
yes
In the 1920s, a Duncan yoyo typically sold for around 25 cents to 1 dollar, depending on the model and design. During this period, yoyos gained immense popularity, partly due to the marketing efforts of Donald Duncan, who helped establish the toy as a mainstream item. Prices may have varied based on location and the specific features of the yoyo.
Investigate the physics of yoyo tricks by analyzing the forces and energy involved in various tricks like "Around the World" or "Rock the Baby". Design an experiment to test the relationship between yoyo string length and spin time. Create a yoyo that utilizes alternative energy sources, such as a solar-powered yoyo or a wind-powered yoyo, and compare its performance to a traditional yoyo.
depending on the axel type, a butterfly yoyo can sleep anywerefrom five seconds, to five minutes. my duncan butterfly sleeps for about twenty seconds, and my glow-wing and freehand for about a minute and a half, maybe perhaps longer.