Trailer for a Swing-Keel Catalina 22
By Dale Mack
November 6, 2001

At the time that I purchased my boat in 1987, my Catalina Dealer was having trailers made by DHL Enterprises of Sacramento, California.  I've been very happy with the trailer.  What follows is a guided tour of my trailer. trailer.jpg (23827 bytes)
The trailer is equipped with surge brakes.  Surge brakes are hydraulic brakes operated by a cylinder built into the coupler that compresses as the tow vehicle slows. The more the brakes are applied in the tow vehicle, the more the coupler compresses which applies the trailer brakes more.   My brake system has a quick connect fitting that allows the trailer's tongue to be extended.  I use DOT5 silicone brake fluid because it does not absorb water or dissolve paint.
The tongue jack swivels up and out of the way for towing.
The spare tire carrier is bolted to the trailer frame.  I found that by wrapping the tire with plastic wrap I could prevent it from discoloring the cover.
The tongue extension can be extended 8.5 feet.

Annual maintenance includes removing and reapplying waterproof grease to that portion of the extension that normally resides inside the tube.

 

The trailer has 2x6 bunk boards mounted on non-adjustable supports.  The height of the forward supports was slightly off, so the trailer's builder used a plywood spacer on each side to correct the problem.   Galvanized lag screws are used to secure the bunk boards to the supports.  I inspect the screws annually, and have replaced the set once since 1987.

I use a torque setting of 90 pounds for the wheel lug nuts.  I check the lug nuts and the temperature of the wheel hubs at every stop while trailering.  Before each trip, I add wheel bearing grease as needed to the bearing buddies.

Besides a spare tire, I carry spare lug nuts, a spare set of wheel bearings, grease seals, a small container of grease, jack, lug wrench, wheel chocks, hammer, brass drift for bearing races, several screwdrivers, socket set, and various pliers and wrenches.

To make sure I understood how to replace the wheel bearings and races while on the road, I practiced at home first.  I had read a recommendation that grease seals shouldn't be reused, so part of the cost of the practice was having to install new seals.
 

My boat sits pretty close to the road, thanks in part to the design of its axle.  I had noticed some uneven wear on my first set of tires, so I took the boat and trailer to an axle shop.  To adjust the camber (how vertical the wheel is), the shop put a pre-bend arch into the axle so that when the boat's weight is present, the wheels are vertical.

I've never worn out any tires on my trailer, even though I'm on my third set since 1987.  For my peace of mind, I replace all three tires every five years.   Here are the specs on my current tires.

Denman Express ST
ST 215 / 75 D14
6 Ply (4 ply tread, 2 ply sidewalls)
Maximum Load 1870
Load Range C
Maximum Pressure 50 psi

The keel guides help center the boat over the trailer.

The guides are 2x6s, just like the bunk boards.

Not getting the boat centered over the keel has caused some chafing damage in the past where the keel cable passes through the hull.  I now check for this condition when putting the boat back on the trailer.

For trailering the keel is lowered to rest in a vee-block.