Ok, so I'm new to woodworking and I know that there are millions of beginner type projects out there, but I decided to go with something I could use now. I live in a townhouse with little space and I have 2 road bikes. My problem is I need to find a place to put my bikes so my solution is to make a set of hangers for them. So I decided to make them out of wood. Here is a pic of it, the little blue area represents the wall.
Those grey things are my plan. I figure I would take 2 18"x2"x12" boards, cut them on an angle, and route out the curve that you see in the top corner. I figure two of these about 18" apart would hold a bike nicely. Here is where my problem is, how do I attach those hangers to the wall, interior drywall, securely enough to hold a bike up? Any suggestions would be greatly appreciated.
Thanks a lot for listen.

Thanks a lot for listen.