I recently mounted a new 23 Zero RTT (Byron model) to the Pioneer platform on an Xventure XV-3. The process was not quite as straightforward as I had expected. I'll post my experience here with the hopes that it may help someone else.
I am not the most experienced person with RTT's, but many seem to utilize two bars/strut channel that are bolted to the base of the tent, and serve as the attachment point to the roof rack. The 23 Zero tents utilize this system. On the Byron model there are 6 pre-drilled bolt holes in the base of the tent, three for each bar (the instructions included with the tent seemed to be for a different model that had only 4 holes). The pre-drilled holes only allow for mounting the bars in one direction. Once I had them mounted to the tent, and the tent hefted onto the rack, it became apparent that this was going to take some additional work. On the driver's side of the trailer is a foxwing 270 degree awning. This necessitates mounting the tent to deploy off the passenger side of the trailer. For those not familiar with the rhino rack pioneer platform, it utilizes multiple bars running side to side as a foundation, with wider slats running front to back. Also, the rack that comes with the Xventure is quite wide. With the RTT in the proper position for deployment off the side of the rack, the RTT mounting bars run front to back, or in the same direction as the slats on the pioneer platform. As seen in the photos below, one of the bars was on top of a slat, but one was not, which would have resulted in an uneven mount.
I discussed various options with both Rhino Rack and 23 Zero.
1) Move the position of the tent mounting bars, drill new holes in the base of the RTT. Not recommended by 23 Zero.
2) Mount the tent a few inches in from the side of the rack, so that both bars rested on top of the slats. This would have been a non-ideal position for the tent, likely making it more difficult to slide the tent cover and awning in and out.
3) Move the position of one or some of the slats of the pioneer rack, but, they don't move.
4) Insert some sort of a spacer in the gap underneath the bar which did not rest on a slat. I wanted to mount to be durable and long lasting. I considered using several washers, passing the bolt from the RTT bar through them, and through a drilled hole in the side to side bars of the pioneer rack. Rhino Rack advised against any drilling into these bars, but that drilling into the slats was fine. Also, they advised against any mount that could create a pivot point that might loosen with off-road use. Their advice was to use a rack accessory, Pioneer Accessory Bar - HD C Channel, which mount side to side on top of the slats and would provide a level mounting platform for the tent. This is what I ended up doing, of course for more $$.
It did require drilling four holes through the slats. Per the advice of Rhino Rack, I placed the holes to the side of the center channel of the slat, so there was more "meat" for the bolt. The bolts were just long enough.
Although I now have a 3 layer rack, and the process felt a bit more complicated than it should have been, I think the final result is clean and feels very solid. One other note, which may have been mentioned by others, is that the metal rods that insert into the sides of the tent to hold the window and door awnings out are very difficult to use on the side of the tent next to the foxwing. If the tent was on a narrower rack it would be impossible to use them. I'll also add that both 23Zero USA (Justin) and Rhino Rack were very helpful.
I am not the most experienced person with RTT's, but many seem to utilize two bars/strut channel that are bolted to the base of the tent, and serve as the attachment point to the roof rack. The 23 Zero tents utilize this system. On the Byron model there are 6 pre-drilled bolt holes in the base of the tent, three for each bar (the instructions included with the tent seemed to be for a different model that had only 4 holes). The pre-drilled holes only allow for mounting the bars in one direction. Once I had them mounted to the tent, and the tent hefted onto the rack, it became apparent that this was going to take some additional work. On the driver's side of the trailer is a foxwing 270 degree awning. This necessitates mounting the tent to deploy off the passenger side of the trailer. For those not familiar with the rhino rack pioneer platform, it utilizes multiple bars running side to side as a foundation, with wider slats running front to back. Also, the rack that comes with the Xventure is quite wide. With the RTT in the proper position for deployment off the side of the rack, the RTT mounting bars run front to back, or in the same direction as the slats on the pioneer platform. As seen in the photos below, one of the bars was on top of a slat, but one was not, which would have resulted in an uneven mount.
I discussed various options with both Rhino Rack and 23 Zero.
1) Move the position of the tent mounting bars, drill new holes in the base of the RTT. Not recommended by 23 Zero.
2) Mount the tent a few inches in from the side of the rack, so that both bars rested on top of the slats. This would have been a non-ideal position for the tent, likely making it more difficult to slide the tent cover and awning in and out.
3) Move the position of one or some of the slats of the pioneer rack, but, they don't move.
4) Insert some sort of a spacer in the gap underneath the bar which did not rest on a slat. I wanted to mount to be durable and long lasting. I considered using several washers, passing the bolt from the RTT bar through them, and through a drilled hole in the side to side bars of the pioneer rack. Rhino Rack advised against any drilling into these bars, but that drilling into the slats was fine. Also, they advised against any mount that could create a pivot point that might loosen with off-road use. Their advice was to use a rack accessory, Pioneer Accessory Bar - HD C Channel, which mount side to side on top of the slats and would provide a level mounting platform for the tent. This is what I ended up doing, of course for more $$.
It did require drilling four holes through the slats. Per the advice of Rhino Rack, I placed the holes to the side of the center channel of the slat, so there was more "meat" for the bolt. The bolts were just long enough.
Although I now have a 3 layer rack, and the process felt a bit more complicated than it should have been, I think the final result is clean and feels very solid. One other note, which may have been mentioned by others, is that the metal rods that insert into the sides of the tent to hold the window and door awnings out are very difficult to use on the side of the tent next to the foxwing. If the tent was on a narrower rack it would be impossible to use them. I'll also add that both 23Zero USA (Justin) and Rhino Rack were very helpful.