Since the dawn of sailing, ropes have played a crucial role in helping sailors adjust sails and various onboard systems. The challenge has always been: how to adjust them efficiently? Sailors not only need a way to secure lines but also require systems that allow for quick adjustments. To meet this need, sailing deck hardware like cleats, clutches, and jammers were developed, making sail handling easier for all types of boats, systems, and crew members.
This article will guide you through jammers vs clutches, explaining how they work and offering quick tips on when to choose one over the other. By the end, you’ll be better equipped to determine the best option for securely holding ropes on your sailboat.
What are Jammers?
Jammers use a toothed cam controlled by a handle. When the handle is down, the cam engages, holding the rope in place. Unlike clutches, a jammer under heavy load cannot be released by simply opening the handle. To remove a line from a jammer, you first need to transfer the load by tensioning the line on a winch. Once the load is off the jammer, the handle can be pulled, and the rope released.
This makes jammers a robust, secure, and reliable solution for permanently loaded lines, especially on larger boats where high loads are common.
When Should You Choose a Jammer?
Jammers are ideal for permanently loaded lines under medium to high loads, such as main halyards, jib halyards, and sheets on big boats.
What are Clutches?
A rope clutch operates similarly to a jammer but with a key difference: it can release a line while under load. This feature makes clutches ideal for controlling medium loads, which is why they are extensively used on medium-sized boats.
Like cleats, clutches allow for easy trimming and adjustment, as lines can be adjusted without opening the clutch. In an emergency, a fully loaded line can be quickly released by opening the clutch handle. However, as a precaution, it’s advisable to transfer the load to a winch before releasing the clutch to minimize wear and tear.
When Should You Choose a Clutch?
Clutches are ideal for lines that require regular adjustment and are under low to medium loads, such as halyards and sheets on medium-sized boats. They are also suitable for control lines on larger boats.
Maintenance Tips for Jammers and Clutches
Once installed, jammers and clutches require minimal maintenance. However, we recommend inspecting them annually, along with your winches, and applying light grease to any bearing surfaces as per the manufacturer’s guidelines.
If you upgrade or replace your lines, ensure that your rope clutches are compatible with the new line’s diameter, load capacity, and outer braid. Most spare parts, such as replacement jaws, are readily available, making upgrades or repairs straightforward.
Related Article: Selecting Cleats vs Clutches (Click here)
If you’re considering upgrading your rope clutch or jammer, the MAURIPRO Sailing Tech Staff is ready to assist you in finding the best product for your sailing needs and budget.