V.P.
Most crafters consider this a grey area. However, most companies consider that if you are profiting from their name, reputation, logo, or even colors, you can be sued for copyright infringement. Lots of people do it, lots don't get caught. But when they do get caught, you can get in big trouble. I don't know how HD is about their products, but Disney, for example, will take you down in a heartbeat. Even being in Ohio, if I do anything with scarlet and grey or a big block O, Ohio State could come after me for profiting off their image. You can contact Harley Davidson and ask them directly. I sell a lot of my work, but I wouldn't even come close to anything like this.