The tinkering Soichiro created a stamp to forge his family seal out of a used bicycle pedal cover.
善于修修补补的宗一郎用一个用过的自行车踏板盖制作了一张印章,用来伪造他家的印章。
英语百科
Bicycle pedal
The bicycle pedal is the part of a bicycle that the rider pushes with their foot to propel the bicycle. It provides the connection between the cyclist's foot or shoe and the crank allowing the leg to turn the bottom bracket spindle and propel the bicycle's wheels. Pedals usually consist of a spindle that threads into the end of the crank and a body, on which the foot rests or is attached, that is free to rotate on bearings with respect to the spindle.