I came to have design layout to install hitch for hauling trailer. It's bolt-on system that requires no welding. I have detail drawings as well. It's in dwg file since I did on AutoCad. Let me know if you like to know more details, please. I'll send you dwg file. I don't know how to add dwg file on this site. This site seem to want 3rd party file storage server or so. Let me know. [img][/img]

Hi, Thanks for your reply. How can I convert dwg to zip file. Do I need to use Winzip or some software to convert it? I don't usually use zip file so maybe I'm not used to it. Let me know how to convert it to zip easily, please.

Isaac wrote on 05/17/16 at 19:42:30:

just right click on the file or select many and right click, you should have an option to "send to"... "compressed folder"
that will be a zip file.

How could you pivot the ball? Maybe add a spring under it and mount the ball loosely?

Hi, Thanks for your input. You brought important issue on swiveling of ball when turning since 2-wheel vehicle lean when turning. Ball on my photo is not swiveling ball. It seems that installing swiveling ball or Freedom pivot ball would be safer and more sound way of hitch coupling. Regarding spring, usually coupler has spring built in it like photo someone uploaded.
Anyway I added dwg file and some photos on how I made this. I hope this could help you.
Thanks for your input as well.

Hi, Kenny G
Thanks for letting me know on the factory built trailer tongue for Gold-Wing. It's good idea for tongue to have swiveling capability to make receiver ball simple.
People let others know what others may have missed. It's good I think.
It's good helping hand for each other.
Thanks for letting me know.

Thanks for your video. I thought about swivel hitch ball.
I don't recommend people to buy these adaptors, swivel ball, or Freedom ball because these are expensive. I saw least expensive one was $50 on Ebay. For my hitch, you can make swivel whole angle with relatively simple modification. You can drill hole in the middle of attaching surface of angle for thru-pin(or bolt) to go thru. Then let your whole angle swivel around. Besides, if you don't need to drive fast to lean deep(more than 10 deg or so) you may not even need swivel ball at all. Anyway, this swivel issue shouldn't be too big job to take care of. I thought that bending job was more difficult and tricky. Thanks for your input.

Thanks for your opinion. I have considered it when I was doing design layout already. But I have decided not to use that because designing to use top of shock to reduce bouncing itself causes to make hitch too long, and itself causes other problems. Believe me I have explored other ideas including yours. I thought my idea was simple and practical. Remember that everything comes with trade off in designing. If you don't use it off-road, it should be no problem. I welcome you to come up with better design layout if you don't mind.
Besides for swiveling, I have tested mine the other day. My Harbor freight trailer tongue can swivel 30-35degree without receiver ball swiveling at all. Many of you may not even need swiveling ball at all. If you lean deep for high speed cornering more than 30-35 degree, I have prepared modification, and I have uploaded it for all of you. So you don't have to buy those expensive swiveling hitch or Freedom Pivot ball.