Mainsheet 2-Speed Systems

These dual purpose systems offer sailors the option of either speed or power. They are used for mainsheets on small to medium-sized offshore boats where power is required for effective heavy-air trimming upwind, but speed is crucial for off-wind trimming and mark roundings.

Typical boat length:
Small Boat: 22' - 28' (6.7 - 8.5 m)
Midrange: 29' - 34' (8.8 - 10.4 m)
Big Boat: 35' - 42' (10.7 - 12.8 m)

 

2:1/4:1 Swivel Base

This system is often found on boats like J/24s where a center-mounted swivel base is desired.

main-gt11.gif
Diagram
Ref.
Description Small Boat
Part No.
Midrange
Part No.
Big Boat
Part No.
A Double 2602    
B Single 2600    
C Double 397
2634
   
D Cam base 402    

 

3:1/6:1

This 3:1/6:1 two-speed system is used on boats end-boom sheeting and mainsails up to 240 ft2 (22.3 m2) and end-boom sheeting.

main-gt12.gif
Diagram
Ref.
Description Small Boat
Part No.
Midrange
Part No.
Big Boat
Part No.
A Cross Block 400
400  
B Fiddle 401 401  

 

3:1/6:1 Swivel Base

This 3:1/6:1 system allows the mainsheet trimmer to be positioned anywhere on the boat. A great setup for sportboats.

main-gt13.gif
Diagram
Ref.
Description Small Boat
Part No.
Midrange
Part No.
Big Boat
Part No.
A Cross block 400
400  
B Double 2602 2602  
C Double 397
2634
397
2634
 
D Cam base 402 402  

 

4:1/8:1 Swivel Base

Similar to the 3:1/6:1 swivel base system, but uses a 4:1/8:1 tackle for more power.

main-gt14.gif
Diagram
Ref.
Description Small Boat
Part No.
Midrange
Part No.
Big Boat
Part No.
A Double 2602 2602  
B Cross block 400 400  
C Double 397
2634
397
2634
 
D Cam base 402 402  

 

If you would like to link to or reprint this article please contact advertising@harken.com

  • United States
  • Australia
  • France
  • Italia
  • New Zealand
  • Polska
  • Sverige
  • UK