75mm Ratchamatic Carbo Blocks
The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.
Use the 2634 with a 402 or 403 swivel arm for a versatile two-speed mainsheet system
Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic® cheek block mounts on either port or starboard. The holding power of the 57 mm is as high as 10:1. The 75 mm is up to 15:1.
For the ultimate system, mount a Ratchamatic® on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air and to double holding power in heavy air.
- Main/Jib Sheets
- Asymmetric spinnakers
- Sheave Ø 75 mm | 2-15/16 in
- Length 165 mm | 6-1/2 in
- Weight 984 g | 34.7 oz
- Shackle pin Ø 8 mm | 5/16 in
- Maximum line Ø 12 mm | 7/16 in
- Maximum working load 816 kg | 1800 lb
- Breaking load 2041 kg | 4500 lb
- Holding power with 180 degree wrap 50 lb (23 kg) 15:1
Note Maximum Working Load and Breaking Load Based On Cam Cleat Strength