I believe that this could happen with chrome. But if the same happens in reality to the polished aluminum engine from S&S why no one writes about this special heating problems here or in the new Three Wheeler book? Has anyone heard about this problem by Morgan dealers?
I believe it's not common knowledge. The three wheeler book is just a collection of knowledge out there. If you wanted to test it properly, you would properly need the exact same setup, first polished chrome, then perhaps even remove the chrome, and then paint it black. But it's a physics question, and black does lose heat faster than chrome or white. It has little to do with reflecting, unless it is on plastics of some kind (i.e. some kind of insulation). If directly on metal, it is more a question of heat emission, than it is about reflecting radiating heat back. However, the end result is the same: Chromed or white anything will retain more heat for longer than the same item in black.
