My Cart

3:1 Purchase

A 3:1 low friction sheave is used below the furling drum to adjust luff tension in the sail. 3:1 Friction sheaves are designed to be used under a code zero or asymmetric furling drum. This is used to apply tension to the luff of the flying sail. A 3:1 can be used to apply more load to the sail luff / torsional cable than a 2:1 Purchase, for the same winch load. The tackline is attached (spliced) first to the becket on the bottom of the 3:1 Friction sheave it then goes round x1 sheave at deck level (normally at the end of a bowsprit) back up around the friction bearing surface of the sheave and back down to a second block and then led back to the cockpit. A double block can be used at deck level or x2 single blocks can also be used.

  • 3:1 Purchase
  • 2:1 Purchase
105.75 105.75 USD
0% Off
2,821.30 2821.3 USD
0% Off
540.31 600.35 540.3100000000001 USD
10% Off
386.01 428.90 386.01 USD
10% Off
300.12 333.46 300.12 USD
10% Off
154.23 154.23 USD
0% Off
462.21 462.21000000000004 USD
0% Off
200.22 200.22 USD
0% Off
85.10 85.10000000000001 USD
0% Off
1,918.01 1918.01 USD
0% Off
1,369.76 1,521.95 1369.76 USD
10% Off
481.58 506.92 481.58 USD
5% Off
1,367.68 1367.68 USD
0% Off
973.26 1,081.40 973.26 USD
10% Off

To install this Web App in your iPhone/iPad press and then Add to Home Screen.

Added to cart