Robert Cobcroft 22 May 2014 Cycling History, Cyclist Interviews, Bike Frame Building Darrell McCulloch from Llewellyn Custom Bicycles spills the beans on how he got started building custom bikes Robert Cobcroft 22 May 2014 Cycling History, Cyclist Interviews, Bike Frame Building How Darrell McCulloch learnt to build bespoke bicycles, now collected and ridden by bike style mavens.