In this video I will show you the bicycle roof rack that I made to transport my xtracycle on top of a 1998 Subaru Outback. I have left out dimensions as this is intended to be a guide to give you some ideas to make your own roof rack custom fit for your bicycle and car, truck, van, bus, whatever. The wood is standard 2x6 and 2x4. I used #8 x 2" wood screws and wood glue to fix the pieces together.
As always, Thanks for looking and Enjoy.