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Tensioning the cap shrouds
Tensioning the cap shrouds
Tensioning the cap shrouds
Tensioning the cap shrouds
Adjusting the cap shrouds
Adjusting the cap shrouds
Adjusting the cap shrouds
Adjusting the cap shrouds
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Adjusting the cap shrouds

Tensioning wire and rod
If you want to trim the rig correctly you should
have  some  idea of the tension in  shrouds and
stays, either by rules of thumb or a more exact
method such as the one described below.  Here
you  measure  the  elongation  of  the wire as a
percentage of the chosen start lenght and then
establish tension as  a percentage of the wire's
or rod's breaking load.

You either measure the longation of all the wire
or a part of it, e.g. 2 m. Accuracy will  improve
with the sample length. Begin  with a minimum
tension in the wire. Example (cap shrouds):

- Mark off a 2 metre  length of the cap  shroud
  on  one  side  of the  boat  using  the  shroud
  terminal for reference.

- Measure  the   elastic  extension  (f)  of  the
  measured length as the rigging  screws  are
  alternately   tightened,  little  by  little.  Stop
  when f = 3mm. (4mm on  fractional rigs with
  aft swept spreaders).

Note that  an  elongation  of f = 1 mm  over a
sample of 2m  of the wire  corresponds to  5%
of breaking load independent of the wire diameter.

NB! For rod, an  f = 1mm longation over 2m
corresponds to 7.5% of breaking load.

- Tensioning the cap shrouds
- Ajusting the cap shrouds
- How to adjust the cap shrouds
- How to tension the cap shrouds
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TITLE RIG TUNING SAMPLE 2
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How to adjust the cap shrouds
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