Trailer Winch Types and Rope Options
Boat trailers rely on a manual winch mounted to the trailer post, connected to the boat with a rope, wire, or webbing strap. Getting the right combo makes loading the boat smoother, easier, and more controlled at the ramp.
- Manual trailer winches: Most boat trailers use manual winches with gear ratios that help reduce strain. Smaller boats often run a single-ratio winch, while heavier boats benefit from multi-ratio models that give you a bit more leverage for that final pull.
- Synthetic winch ropes: Lightweight, strong, and easy to handle. Their flexibility makes them easy to guide onto the drum while winching the boat onto the trailer, and they pack down neatly when stored.
- Galvanised winch wire: A traditional option and a solid choice for heavier boats. Galvanised wire is strong, durable, and well-suited to regular use around the water.
- Webbing winch straps: A flat, flexible option that winds neatly onto the drum. They're easy to manage, making hooking up and loading the boat quick and tidy at the ramp.
- Handles and accessories: Trailer boat winches also use detachable handles and small mechanical parts like pawls, springs, and roll pins. Keeping a few spares handy can save a lot of hassle at the boat ramp.
Finding the Right Winch for Your Trailer
Begin by matching the pull rating and gearing to your boat's weight.
Load Capacity and Gear Ratio
Your trailer winch needs to comfortably handle the weight of the boat and the effort required to pull it up the trailer rollers. Higher gear ratios make winching easier, but you'll need a few more cranks of the handle.
Rope, Wire, or Strap?
Each option suits a different job. Synthetic rope is lightweight and easy to manage, galvanised wire cable is a durable option for heavier boats and regular use, and webbing straps wind neatly onto the drum and make connecting to the bow eye easy as.
Handle Compatibility
Not all winch handles are one size fits all. Some winches use removable handles secured by roll pins or bolts, so it's a good idea to confirm compatibility before replacing an old or damaged one.
Marine Corrosion Resistance
Boat trailer winches spend a lot of time around saltwater, so choosing corrosion-resistant components helps them last longer. Galvanised bodies and stainless internal parts help keep the winch working properly in marine conditions.
Maintenance Tips for Trailer Winches and Ropes
Trailer winches work hard at the boat ramp, so a bit of basic maintenance helps keep everything running as it should.
Rinse After Saltwater Use
Salt speeds up corrosion. Giving the winch, rope, and hooks a quick rinse with fresh water after use helps them last longer.
Inspect Ropes and Cables Regularly
Check synthetic rope for fraying, webbing straps for worn stitching, and wire cable for broken strands. If anything looks damaged, it's best to replace it before putting the winch under load.
Lubricate Moving Parts
A little lubrication on the gears, shafts, and pawls now and then keeps the winch running smoothly and helps reduce wear.
Check Hardware and Fasteners
Make sure mounting bolts, handles, and roll pins stay secure. These small parts take a fair bit of strain and can loosen over time.
More Trailer Gear Available at Burnsco
A trailer winch is just one part of your towing gear. Burnsco also stocks jockey wheels, trailer rollers & brackets, and towing accessories, to help keep your boat secure on the road and easy to launch at the ramp.
Visit your nearest Burnsco store or shop online to find the right gear for your trailer.
Frequently Asked Questions
Can I fit a trailer winch to any boat trailer?
Most boat trailers have a winch post or mounting plate where a manual winch can be fitted. As long as the mounting holes line up and the winch has the right load rating for your boat, it can usually be installed without much modification.
What size winch fits a standard NZ boat trailer?
For smaller boats and dinghies, manual winches rated between 500 kg and 1000 kg are suitable. Larger boats or heavier hulls may need a higher-capacity winch or a multi-ratio model to make pulling the boat onto the trailer easier.
Are winch handles universal or model-specific?
Most winch handles are removable, but they aren't necessarily universal. Shaft sizes, mounting styles, and retaining pins can vary between winch models. If you're replacing one, it's a good idea to check the measurements or bring the old handle with you in-store.
What spare parts should I keep on hand for a trailer winch?
Useful spares include winch handles, roll pins, pawls, springs, and replacement rope or straps. These small parts can wear out or go missing over time, and having a spare handy can save a lot of hassle at the boat ramp.
What is the minimum strap or rope rating required for towing a boat in NZ?
The strap or rope used with a trailer winch should be rated higher than the weight of the boat being pulled onto the trailer. Choosing a rope or strap with a higher breaking strain than the winch's rated pull provides a safer margin when loading.
