Step #1
Start the tutorial by making two boubleborder circles.
Step #2
Draw seat, handle shapes as shown.
Step #3
Make down tube and outline for pedal shape as shown. Also draw two circles.
Step #4
Draw dotted two circles as shown.
Step #5
Make allow rims.
Step #6
Make front forks shape as shown.
Step #7
Draw top tube and seat post shape as shown.
Step #8
Make lever shape as shown.
Step #9
Draw cassette shape as shown.
Step #10
Make pedal shape as shown.
Step #11
Make chain cover shape as shown.
Step #12
Draw seat stays shape as shown.
Step #13
Draw lever shape as shown.
Step #14
Make clutch wire shape as shown.
Step #15
Draw sproke and a wire shape as shown.
Step #16
Finally, make necessary improvements to finish.