July 26, 2015 The Fabricator Strictly Fabrication, 4 Rotor Build, Video Blog #FourRotorFun: Cooling System Part 1 - The Radiator July 26, 2015 The Fabricator Strictly Fabrication, 4 Rotor Build, Video Blog What What would you do if you found out your limitless build had no space for any kind of conventional radiator? What if you had to design something unconventional to cool down an engine that can't be replaced easily? What would you come up with?