Specialized Bicycle Components, Inc.

Ryan James McDonald

Jason Scott McDonald

James Michael Stafford

Jan Talavasek

Marco Werner Sonderegger

Robin François Ramon Lechevallier

A bicycle includes a chainstay protector having an upper surface including a valley, a first peak, and a second peak. The first peak extends upwardly from the valley toward the chain and has a first contact surface positioned to contact the chain a first height above the valley. The second peak extends upwardly from the valley toward the chain and has a second contact surface positioned to contact the chain a second height above the valley. The first contact surface is spaced from the second contact surface by a gap that is at least 5 times the first height. Each of the first and second contact surfaces has a length that is less than the length of the gap and less than two times a pitch of the chain.

Chainstay protector with spaced protrusions

An electric bicycle includes a frame assembly, wheels supporting the frame assembly, a motor assembly coupled to the frame assembly and having a motor output shaft, and a chainring assembly including a mounting portion clamped onto the motor output shaft.

Clamped chainring assembly for electric bicycle

Bicycle chainstay protector

Growing community of inventors

Cupertino, CA, United States of America

Ryan James McDonald