I know you can get sway even with an anti-sway bar. No one should ever think that because they've added an anti-sway bar that they're free of a sway situation.
Every day when I start up in the morning I reach for the brake controller's trailer brake activiation switch and activate the trailer's brakes
to test them and to reinforce that should I get sway, that I can stop it by activating the trailer's brakes
I do have an anti-sway bar on the Scamp
16 however I've towed our Scamp
16 about 2000 miles without an anti-sway bar and towed a Casita
16 about 4000 miles without an anti-sway bar. In both cases I have never seen sway and in both cases I had well less than a 10% tongue weight
As to the anti-sway bar, before we ever towed I investigated whether I should purchase an anti-sway bar. The reponse was you'll probably never need it but in an emergency it's nice to have. Since it was only about $50 and easy to install I bought one.
We have had two emergencies, neither related to sway. I've published the second on this site where our trailer's receiver hopped off the ball due to a receiver modification by a previous owner. In that case the anti-sway bar held it all together.
The first situation was a full bore emergency stop, the worst of my life, where an extend cab truck pulled across the highway blocking both lanes forcing an emergency stop from 55 mph, smoking tires
and all. The trailer stayed perfectly in line with the Honda. Did the anti-sway bar do anything in this situation? I don't know but I was glad every thing stayed together as it should.
It's quite clear that the Scamp
tracks very well. It has never moved from side to side at all with or without the anti-sway bar. I make no secret of the existance of the bar and have mentioned it many times on the site.
I will also say that load distribution is important. We had an earlier non-fiberglass trailer where we mounted a small generator
on the rear bumper. We had an anti-sway bar on that trailer, yet it swayed in the first 10 miles, enough so I stopped and pulled over and moved the generator
inside. Obviously balance matters with or without an anti-sway bar. I think part of the Bailey testing mentioned in an earlier post shows that weight
distribution is important.
When someones sends me a PM asking about towing with our CRV, I send them a 3 page document where I state we tow with an anti-sway bar and as well that we've towed without an anti-sway bar. I try to take this subject seriously and be totally open because some people are suspicious of our Honda CRV and our towing methods. After 5 years of towing all over the continent with our Honda CRV I am very happy with the results and more than willing to share what we've learned, just PM me if you want a copy.
I considered posting this document on Towing with a Honda CRV on the site but have refrained because too many people get their dander up over our towing style. Some are concerned about our potential liability, some think I'm a danger to others.
The reality is that we're very careful and conservative people, checking and rechecking our tow vehicle and trailer almost daily. We've even gone so far as to install pressure sensors on our tires
to know what the tires
are doing. We're careful but more importantly our Honda has done the job without a single drive line repair in 8 years, 5 years of extensive towing. We're now into our 284th day on the road this year. No one has tooted at us because we're too slow or too fast, even on the many long and high passes we've crossed. We're happy with our Honda. We only wish Honda's marketing department would give us the same ratings they give the Europeans. More so we wish they would import their 4 cylinder diesel. Then we could do well better than 23 mpg.