單車-bmx

首先答你headset個位啦..無限轉既原理..首先個headset蓋係有個洞既..俾後面條迫力線出既..目的係你轉枝handle bar個陣唔會了到尾個份迫力線..到近鵝頸個到..有一塊鋁..係一開2咁出..拉起塊鋁..再有一條拉下面個份..再2合番一條迫線..再到個Y制..先至剎到車...你轉枝handle bar既時候...個2塊鋁都係係個個位..係跟住枝handle bar轉...所以唔會打cake<~!明未??
踩街既..通常得後制...冇前制..通常做d連貫d既動作..例如 manual緊..個頭轆一路唔落地咁上樓梯...又一係做馬跳呀..一係關下欄杆....通常個齒輪比係38拉13-18..差唔多你踩一腳個轆轉2至3個圈啦..其他??b仔分好多種...例如flatland..freeride..racing..等..flat咪只係做平地花式..freeride係跑ram台.. racing..有人用b仔玩4x 2x..得閒上youtube search下 4cross or 4x ..2 cross or 2x