Stu, welcome to the site. It is a wealth of information.
I do not have experience with the RV5, but I am a mechanical engineer and I would never put something like that on my trailer. By the added length of the device, you are increasing the momnet arm and thus the forces on the pin box area of your trailer.
I strongly suggest you contact your trailer manufacturer (not the dealer) and ask them if they will warranty the trailer frame if you use such a device. Very few will are designed for the additional stresses on the frame.
If you are short of clearance and have a short bed truck, you might want to look into a slider hitch, either the manual type or the automatic type.
Ken
__________________
Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
|