I wonder if there's a legitimate reason is that Forest River doesn't publish the dimensions of their trailers. (At least haven't found the number I'm looking for.)
I have just purchased a 2005 Ford F150 to tow my Flagstaff Hardside pop-up RV and am now trying to determine which ball mount to buy in order to pull the thing. (I had the RV delivered since I had no way of moving it until now!)
According to what I've been able to find online, (Choosing the Correct Ball Mount | etrailer.com
) one needs to know (A) the height of the inside top edge of the receiver and (B) the height to the bottom edge of the coupler. Then subtract. The difference if (A) is higher, equals the "drop" or if (B) is higher, the "rise". Another method (Ballmounts - How to Measure
) subtracts (C) the difference of the height to the inside top of the coupler from the height of the ball from (A) to determine drop or rise.
This all seem simple enough, I was able to measure the truck side of the equation (A = 16.5") on a flat patch in a parking lot but I don't have a particularly level place at home where the trailer is to make these measurements so I'm unsure of my measurements. Seems it would be easy for the manufacturer to determine either (B) or (C) and state it in the owners manual - would have made this easier for me at least.
Anyone know the height (C or B) of the coupler on a 2013 Flagstaff T12RB or have other ideas on how to be sure I buy the right ball mount the first time? -- Thanks!