Petticrows? Rig set up guide. 2011
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Petticrows— Rig set up guide. 2011 When setting up a Petticrows Dragon there are some basic steps to follow. This way you can be sure the boat is set up in a “standard” way. If you use these settings as a base reference you can then experiment to find out exactly what suits your sailing 1. Set the jumper tension If you have fixed jumpers then set the tension prior to stepping the mast. An average setting would be 8 on a Loos Tension gauge. Check the mast is straight sideways. On adjustable jumper systems mark the overall tension control rope with 6,8 and 10. ( this can only be measured when the mast is up and from a ladder) 2. Mark the forestay Put the mast up in the boat, so that it is standing vertically. Measure from the deck -up the mast 81cm and make a mark. (max class rule is 81mm, min79mm) This will probably be at the top of your black band. Pull the forestay down the mast and mark the forestay at the mark which is 81cm up the mast. The mark on the forestay is your reference 3. Establish the mast rake. Connect the forestay. Do not connect the mast ram bottle screw or shrouds. Get some tension on the forestay with a little runner or backstay tension. Measure from the mark on the forestay to the deck. This measurement is your mast rake. Pin in medium setting hole. Light and strong wind positions either side The average mast rake measurement should be 122cm. In heavy winds the mast can be raked aft so that the mast rake measurement is 123cm. In light winds. The mast can be raked forwards so that the mast rake measurement is 121cm If the rake is incorrect it can be altered by changing attachment point of the forestay. It is a good idea to tape above and below the most commonly use holes. PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com

4. Find station 4 line On the topsides of the boat just below the edge of the deck there are small spots which show the position of measurement stations. Station 4 is about 1200mm in front of the mast With a straight edge and some tape join the station 4 marks across the deck of the boat. This line across the deck will be your reference for your mast, forestay and shroud position. 5. Find shroud positions Measure from station 4 line perpendicularly to the front face of the upper shroud. This measurement should be 82 cm Measure from the station 4 line to the front face of the lower shroud....

9. Mast step position and pre bend Without connecting the mast ram bottle screw OR shrouds And with the mast rake at 122cm Push the mast aft so that the forestay has some tension. You can use a little runner tension to achieve this. Do not bend the mast. Normal position of the mast is that the front face is level or aft of the aft end of the mast measurement plate. If the front of the mast is level there will be no pre bend when you connect and adjust the mast ram bottlescrew. If you are ( as an example ) 5mm behind , you will have 5mm of prebend when you connect and adjust the bottlescrew...

11. Measure the shroud tension Using a Loos Model PT-2M tension meter set the shroud tensions depending on the weather conditions. Measure directly onto the wire. The figures given are for boats newer than 2008, in older models of boat the hull is not so stiff so up to 30% more tension is required 12. Mark your Maximum Runner Tension. Attach a Loos Gauge to the forestay. Pull on the runner until the tension is 32. Put a mark on the runner wire where it enters the deck. This can be used as a guide to runner tension while sailing 32 is the absolute maximum in strong winds.. PDF Created with...

Petticrows rig settings guide—Summary Jumper average tension Average mast rake measurement Mast rake light wind Mast rake strong wind Station 4 line to front upper shroud Station 4 line to front lower shroud Station 4 measurement to front of forestay measurement plate Station 4 line to aft of mast measurement plate Maximum runner tension (measured on forestay) Please note : The shroud positions and forestay positions detailed are the current measurements put on 2011 boats for best balance. On Older Petticrows boats the mast measurement plate and forestay measurement plate would have been...

Rig tension guide Standard mast Light winds Medium winds Strong winds Upwind Mast Ram Forward from max aft by 1-1.5 cm Upwind Mast Ram Forward from max aft by 1-1.5 cm Rig tension guide New Stiff “I” mast Light winds Medium winds Strong winds Upwind Mast Ram Forward from max aft by 1-1.5 cm Upwind Mast Ram Forward from max aft by 1-1.5 cm Caution. The lower shroud tensions given are a guide only and for any chosen upper shroud tension the Lower shroud tension can only be correctly achieved by sailing upwind , sighting up the mast and adjusting the lower shroud tension until the mast is...