Interpretation and Clarification of Rigging & Specification
Posted: Sun Feb 26, 2017 12:56 pm
With the average age of the boats in our class now exceeding 10 years the need to replace worn or broken original equipment is increasing. To help owners keep the boats safe and competive and at the same time maintaining strict One Design Specification the Technical Committee with help of J/Boats have sorted true specifications to identify suitable/class legal replacements.
Several of the original suppliers are no longer in business or have stopped selling parts in the US.
Te document posted below can also be found at this link:
2/22/2017 – Class Measurer Rigging Specification Interpretations
Interpretation and clarification of J/109 Rigging & Specification Published 8/24/05
General Specifications.
No changes allowed unless clearly specified in the current class rules.
Mast & Boom.
No changes allowed unless clearly specified in the current class rules. See rules 4.4.5 a & b as well as the 30 November 2016 posting in the Forum class rules discussion regarding sprit end cap design. External track for main “slugs” allowed.
Standing Rigging (Rod)
No changes allowed unless clearly specified in the current class rules.
It has been posted on the Forum that some US built boats have shortened the upper part of the backstay, as long as it is not shorter than the French built boats, it will be “grand fathered”. Backstay adjusters may be replaced with the same size units from Harken, Sailtec or Navtec.
Running Rigging.
Posted list of cordage should be viewed as a snapshot of what was available/suitable at that time. It is a benefit to the class/owners to take advantage of the development of new lines at lower costs than in the past.
Rope manufacturer, core material or color-coding is not restricted and substitutions are allowed as long as the selected line is suitable and safe for the loads involved. Type of shackle or method of attaching lines to sails is not restricted.
No lines thinner than 1/4” (6 mm) are allowed as control lines handled by the crew, thinner lines are allowed in primary tackles or cascades. Lines made of PBO (or similar “exotic”) cores are not allowed.
Lines for the first reef must be rigged on the boom ready to attach to the mainsail, discontinuous lines for the first reef are allowed.
Maximum Genoa adjuster controls is 8:1, see rule 4.3.17.
Specifications of control systems not mentioned in this or other documents.
Vang 12:1 (Hall, Spartech, Selden or Nautos)
Outhaul 8:1
Cunningham 4:1/8:1
Several of the original suppliers are no longer in business or have stopped selling parts in the US.
Te document posted below can also be found at this link:
2/22/2017 – Class Measurer Rigging Specification Interpretations
Interpretation and clarification of J/109 Rigging & Specification Published 8/24/05
General Specifications.
No changes allowed unless clearly specified in the current class rules.
Mast & Boom.
No changes allowed unless clearly specified in the current class rules. See rules 4.4.5 a & b as well as the 30 November 2016 posting in the Forum class rules discussion regarding sprit end cap design. External track for main “slugs” allowed.
Standing Rigging (Rod)
No changes allowed unless clearly specified in the current class rules.
It has been posted on the Forum that some US built boats have shortened the upper part of the backstay, as long as it is not shorter than the French built boats, it will be “grand fathered”. Backstay adjusters may be replaced with the same size units from Harken, Sailtec or Navtec.
Running Rigging.
Posted list of cordage should be viewed as a snapshot of what was available/suitable at that time. It is a benefit to the class/owners to take advantage of the development of new lines at lower costs than in the past.
Rope manufacturer, core material or color-coding is not restricted and substitutions are allowed as long as the selected line is suitable and safe for the loads involved. Type of shackle or method of attaching lines to sails is not restricted.
No lines thinner than 1/4” (6 mm) are allowed as control lines handled by the crew, thinner lines are allowed in primary tackles or cascades. Lines made of PBO (or similar “exotic”) cores are not allowed.
Lines for the first reef must be rigged on the boom ready to attach to the mainsail, discontinuous lines for the first reef are allowed.
Maximum Genoa adjuster controls is 8:1, see rule 4.3.17.
Specifications of control systems not mentioned in this or other documents.
Vang 12:1 (Hall, Spartech, Selden or Nautos)
Outhaul 8:1
Cunningham 4:1/8:1