Originally Posted by 4Gcampers
I'm confused here. I have been using a Reese four bike hitch rack, the was previously used on our SUV. It lowers to allow a rear hatch to be opened. Also, is has a long draw bar with a ball at the end to tow up to 2500 lbs. How can all these mfgs. claim that the products can not be used on RV's? The class 3 hitch on the Sunseeker is 5k/ 500lb tongue weight rated. I have a hard time believing that the bike rack or the hitch could be damaged by a bike rack, when the hitch is rated to pull a toad. And to say the extra length of an RV has something to do with it? Makes no sense, but I'm not an engineer. Maybe they are referring to people who are trying to mount a rack to the rear bumper of a MH or TT. We all know most of those bumpers are to light to mount weight to.
also not an engineer, but from what I understand (from FRF) it's not the integrity of the hitch itself, it's the bounce of the vehicle. Apparently our Class C's ride like a school bus in the rear b/c it's farther away from the wheels than on an SUV.
So a quick bump in an SUV won't jiggle the bikes or break the folding arm on the bike rack. But the same bump in a Class C (or any RV) has a lot more bounce at the bike rack - causing caution statements about the folding bike rake and/or catastrophic results of bikes poking holes in the rear or marring up the finish.