I just had my GFC topper installed and am trying to figure out how to attached a RTT. I have the part which attaches to the RTT and just need a bracket which fits around the Beef Bars that I can bolt it to. Has anyone found a bracket which fits?
Instead of mounting around the Beef Bars, have you considered mounting to the top of it with Track Studs?
Without more information, I can’t suggest much. My old RTT had a pair of tracks on its base that used four pairs of carriage bolts to extend past the rack bars, with a piece of flat barstock bolted to them on the underside of the rack bars. Maybe something like that could work.
There is a bracket which fits inside of the T-slot of the RTT and has two carriage bolts which stick down approximately 2 inches on either side of the Beef Rack crossbar. his looks pretty typical to a lot of other RTTS, not just mine. I could join the bolts to a joining plat which is attached to the Beef Rack with Track Studs if I had a joining plate which matched the RTT protruding carriage bolts. Since I don’t have a joining plate from the RTT manufacturer, I could have one made at a machine shop, or get a flat barstock bracket which goes around the Beef Rack and has two holes for the carriage bolts. With that, I just need a fabricator to bend a 1" wide plate to go around the Beef Rack and drill wholes for the RTT carriage bolts. I visiting a fabricator tomorrow to see what would be easier to make. Because there are a lot of other attachments which have vertical carriage bolts which are perpendicular to a vehicle roof crossbar, I thought that GFC would offer a pre-bent bracket to go around the “uniquely shaped” Beef Rack crossbar.
You have a good plan that shouldn’t be terribly expensive. Simple bolts & barstock have worked for many people.
If you wanted a stronger mount, you could have a custom set of brackets made like this GFC RTT kit. If they were sized to capture the bottom of the Beef Rack and bolt up to your RTT, that’d be about as solid as you could mount it. I think that’s unnecessary, though. Good luck!