Originally Posted by BFlinn181
In the diagram, the vertical movement of the back of the RV will change the angle A, but the net effect on the distance between the RV and toad will be very small. I'm not going to go to the effort to show all the math. I wonder it the 'tugging' you are feeling is actually the rattling of the tow bar in the receiver. Perhaps a receiver immobilizer might help.
Neat drawing. Thanks for that...
No, the tugging that I am feeling is not the slop in the RV to Towed joints. In fact I am not using the manufacturers punched holes in the hitch receiver or the tow bar tongue. I line-drilled my own DUAL .625 (5/8") holes to eliminate slop.
In fact, in my original post, I proposed introducing a controlled slop into the tow system. If one were to tow with a bungee cord, for example, one would never feel any slop or jerking from the tow linkage.
I agree with you that the RV to Towed straight line distance doesn't change much, but as I told another poster, "if you have a 20,000 pound object trying to move a 2,000 pound object even 1/4 of an inch in a few milliseconds. You WILL feel the amount of energy/work it takes to do that".
I guess that since no one seems to have experimented with a energy absorbing tow bar, I will just go ahead and built one. I already made a design.
Oh yea... I'll also slow down as suggested by another poster.