Morgans wrote:
50mm hitch on 1 7/8" ball is just a little sloppy--probably a minor
factor, but best to change something.


I agree. Get a welding shop (if you are not able to do it yourself) to
change out the trailer hitch for a standard size like 2". (standard in this
area, anyway) Also, custom fit the 1 1/4" stub to your receiver. I have
usually found they fit loose as crap, unless you do something to make it fit
right.

I had good luck doing this by running two beads of weld down the length of
the hitch stub on two adjacent sides of the stub, then grind it down to a
"just right - slide in, but no wobble" fit. It is amazing how that can
reduce sway, and quiet down the ride down the road.

Anyone else with a sway problem have a sloppy fitting hitch - receiver fit?
Anyone do something to tighten up the fit?

It seems remarkable and counter-intuitive that even 1/8" (a lot more
than my hitches) of total slop at one end of a 30 foot long trailer
could have any influence at all. Since the tires are approximately in
the middle, that'd be only an 1/8" at the tail. My trailer is stable,
yet I can still see the tail wagging 1 to 3 inches at times as I'm
driving, far more than a loose hitch would cause.

Perhaps there were some other changes made at the same time, like
changing tire pressures, moving stuff around in the trailer?

--
Eric Greenwell - Washington State, USA (netto to net to email me)

- "Transponders in Sailplanes - Feb/2010" also ADS-B, PCAS, Flarm http://tinyurl.com/yb3xywl

- "A Guide to Self-launching Sailplane Operation Mar/2004" Much of what you need to know tinyurl.com/yfs7tnz