Ben continues his fight to overpower winter and takes on a viewer challenge to build bicycle handlebar warmers. Abby bikes to work in the winter and her hands get very cold, even with mittens, so she asks Ben to create a DIY solution for cyclists like herself. Ben gathers some readily available supplies to hack for the build - motorcycle handlebar warmers, a portable USB charger, and a project box. He builds custom cork handlebar grips, goes over how a step-up regulator works and has his assist, Felix, wire one up, then mods the project box to hold the device. Abby comes to the shop and the warmers are installed on her bike. Ben Heck: 1, Winter: 0. Subscribe for more projects and tips:.