Z S P A R S U K L o g o

RIG TUNING GUIDELINES

Large books have been written on this subject, but we shall attempt to give you a concise set of basic guidelines. So here goes.....

The aims of RIG TUNING are as follows:

a. Ensure a straight mast athwartships
b. Control sail shape.
c. Achieve proper helm balance in a variety of conditions
d. Spread loads appropriately on spars, rigging and boat.

Different rig configurations require a different rig tuning process: click on your rig type to see our guidelines.

Single Spreader Masthead Rig
Single Spreader Fractional Rig
Double Spreader Masthead Rig - aft swept spreaders (not yet available)
Double Spreader Fractional Rig - aft swept spreaders
Double Spreader Fractional or Masthead Rig - in-line spreaders

Z Spars UK provide tuning advice for guidance only and on the understanding that it is the owner's responsiblity to set up his rig in a secure and seamanlike fashion.

WE REGRET THAT WE ARE UNABLE TO RESPOND TO QUESTIONS ABOUT RIG TUNING.

We recommend that you purchase a very useful book , "Sail & Rig Tuning" by Ivar Dedekam (Published by Fernhurst Books). It may be purchased online from W.H. Smith Online

For further specialist advice on rig tuning of various named dinghies and sportsboats, see the North Sails website.

A Note on Rig Tensions:
Generally, shrouds should be tensioned to no more than 15-25% of break load. Tensioning above this level should be done with caution.

Wire Break load (kgf)
diameter Marine Dyform
  1 x 19 1 x 19
     
3mm 720  
4mm 1280  
5mm 2000 2440
6mm 2880 3550
7mm 3550 4910
8mm 4640 6150
10mm 7250 9770
12mm 10400 14400

All goods sold by Z Spars UK are sold subject to our TERMS and CONDITIONS
Last updated 2 December 2009