upon. Jousters create lances that vary from simple PVC pipe and foam devices that are flexible, soft, and relatively safe, up to wooden or metal lances that may be quite dangerous. Regional rules vary, some specifying flaming lances for effect, or glass containers attached to the end, the goal being to break the glass container in order to score points. Design considerations Tall bikes present some interesting design considerations, and different localities tend to have different methods of dealing with them. One consistent issue is that the seat tends to end up in line with, or behind, the rear axle, which creates a powerful tendency to lift the front wheel of the bicycle on acceleration. Some bicycle builders simply accept this tendency, but others solve the problem by moving the seat post forward, lowering the handlebars, moving the rear wheel backward, or by using a smaller wheel in front, typically a 24" instead of a 26". Stability can also be negatively affected, and enhancements such as extended wheelbase by welding extensions on the front and rear dropouts can benefit stability. Contest holders often place restrictions on such modification to prevent unfair advantages. See the bicycle and motorcycle geometry and bicycle and motorcycle dynamics articles for more on these issues. Clubs Tall bikes are a popular mode of transportation for such notable modern 'bicycle clubs' as Midnight Ridazz, Angelopes, SCUL, Zoobomb, Rat Patrol, Black Label Bicycle Club, The Winking Circle, C.h.u.n.k. 666, Cyclecide), and activist groups. They are also a mainstay among builders of clown bikes, art bikes, clown alleys and parade groups. Gallery See also Lowrider bicycle Outline of cycling Velocipede References External links A history of the tallbike 1890-1990 Tall Bike Tour Britain website Cycle types Art vehicles Modified vehicles