Manufactured in Australia by Kemacon Pty Ltd.
Fully manufactured from STAINLESS STEEL MARINE GRADE 316 for optimum corrosion resistant life span.
CONTROLLED MAINSAIL SAFE JIBING
REDUCES THE RISK OF INJURY AND RIG DAMAGE CAUSED BY ACCIDENTAL JIBES
IN ALL WEATHER CONDITIONS with a Kemacon Boom Brake for your sailing yacht.
FEATURES and DESCRIPTION
FEATURES
- The Kemacon Boom Brake regulates the swing of the yacht mainsail boom.
- Fully manufactured from stainless steel marine grade 316 for optimum corrosion resistant life span.
- Grooved drum avoids overrides and jams.
- Top swivel ensures good drum alignment throughout the boom arc travel.
- Compact rope guides optimize drum wrap and rope alignment.
- Strong lightweight precision machined high quality construction.
- No moving parts - maintenance free.
- Easy installation using standard low stretch double braid friction line.
- Can replace the vang, act as a preventer, and steady the boom when reefing.
- 10 year warranty.
DESCRIPTION
- The Kemacon Boom Brake regulates the swing of the yacht mainsail boom.
- The Boom Brake consists of a spiral grooved drum attached to the underside of the boom near the vang.
- A friction line is secured to the port side, then up to 3 turns around the grooved drum, then through a turning block on the starboard side, and back to a cockpit winch or a purchase block tension system at the cockpit.
- The Boom Brake resistance can be varied by changing the friction line diameter, the number of turns on the spiral grooved drum, and the tension at the cockpit tension system.
PRICING
Model Weight Dimensions Max Line Size Mainsail Area Price
#14 1.8 kg 240 x 150 x 60 mm 14 mm 60 m2 AUD 450.00
INSTALLATION and SAILING INSTRUCTIONS
INSTALLATION
- Select the port and starboard aft chain plates as the preferred anchor points and attach suitable shackles to these points at deck level.
- Install the Boom Brake under the boom aft of the vang using a sturdy saddle fixed under the boom. The horizontal dimension from the mast to the Boom Brake anchor point should be approximately 200 mm more than the horizontal distance from the mast to the port or starboard chain plate anchor point.
- Attach one end aft of a low stretch double braid friction line through a suitable swivel turning block attached to the port or starboard chain plate anchor point shackle.
- Lead the friction line up through the Boom Brake entry guide lug, 3 turns around the spiral grooves in the drum, through the exit guide lug and down through a suitable swivel turning block attached to the chain plate anchor point shackle on the other side.
- Lead the friction line aft to the cockpit and tie off using a cockpit winch or a purchase block tension system.
- Lower the boom height to suit mainsail position and ensure the control line tension is the same when the boom is swung through the full arc. Move the anchor points as necessary to suit this requirement.
- Note : Port and starboard side friction lines may offer more convenience and control on larger yachts.
SAILING
- When sailing upwind the mainsheet will be tight. The Boom Brake friction line should be loose for easy tacking.
- When reaching the mainsheet will be eased. The Boom Brake can be tensioned to adjust the sail shape similar to a boom vang system.
- When running the Boom Brake friction line can be tensioned to function similar to a preventer.
- When jibing the friction line tension can be adjusted to regulate the swing of the boom.
- The Boom Brake resistance can be changed by changing the friction line diameter, the number turns on the spiral grooved drum, and the tension at the cockpit tension system.