Rajendran, from Chennai city in the southern Indian state of Tamil Nadu, has been fascinated with bicycles since he was boy.
Now 57 and working in a lathe workshop, he’s channelled his passion into designing his own bicycles from scrap metal.
Rajendran’s latest invention – designed to run without a chain – took him a year and a half and 60,000 rupees ($728.8; £630.2) to make.
He can often be seen riding his creations down the streets of Chennai to introduce them to people.
Produced by A Lakshmi Kanth Bharathi and shot by Jerin Samuel, BBC Tamil; Edited by Piyush Nagpal