Recommended Reverse Trike Roof Rack for 2018 Ford Expedition Max  

Hi - Im hoping you can help me. I have a 2018 Ford Expedition MAX extended with factory cross bars. Im thinking of adding a 3rd cross bar to help with my application. I am attempting to mount a tandem trike Terratrike Rover Tandem to my roof rack, but a specific mount for this application does not exist so Im having to rig something up. My trike has 2 wheels in the front, and one in the rear. The wheelbase is 84.25. Im hoping to purchase 3 of these Sidearm replacement tracks. I would mount two from my middle cross bar through the front cross bar spread the width of my front tires and mount another single track from the middle crossbar through the rear cross bar in the middle of the vehicle which would hold my rear single wheel of the trike. I know I can also purchase the wheel straps pn# 8537006 that will slide into the bottom track of these sidearm rails. I Believe they also have the plastic spacer mount pn# 8537441, the rubber leveling gasket pn# 8537442, the metal bottom bracket pn# 8535513, the square plates pn# 8530333, and carriage bolts but im not sure which bolts I need. I have 2 questions. First, can you complete my list of components needed to securely mount these rails to my cross bars. And Second, if I use these items, will each of the 3 trays/rails slide forward and back slightly? It seems like these items would mounted by a mounting plate sliding in the bottom groove each tray/rail to mount the mentioned components to my cross bars. But in saying that, what will prevent the rails themselves from then sliding forward and back once a bike is mounted to them? As far as additional support, I can use straps to help hold the tandem trike itself down to the trays/rails and/or cross bars. Thank you for your help.

asked by: Eric N