Originally Posted by
UncleCoconut
So does he have a front derailleur for changing the crankset gears or does he take links or add links out of or to the chain depending on his activity?
Nope, he changes the front manually and adjusts the tension pulling the rear wheel on the horizontal dropout. He may have fitted a longer dropout to the frame, he works for a framebuilder so it's possible. I'll check his bike out this week and try to take some pics.