Posted By: --Ajax--
Shroud Tension Tuning - 07/22/20 01:26 PM
Hi All, I'm having trouble establishing satisfying settings for Light/Medium/Heavy air that provide consistent winning results in our PHRF night races.
Following the "Rig Tuning" guides saved under Info, specifically the North Sails Quick Reference Guide, have been questionable.
North Sails Quick Reference Guide – Version 1.0
Wind V1 (Caps) D1 (Lowers) Headstay turns from 0
Base Setting 1050 950 15
Light (0-7) 450 250 10
Medium (8-12) 1050 950 15
Medium/Heavy (13-17) 1600 1600 20
Heavy (18+) 2000-2200 2000-2200 20-30
We've been following the Base Setting to start, results have been okay here. However on both Light and Heavy ends of the spectrum these numbers just don't seem to work?!
Light - 450/250 makes my shrouds complete noodles, not just on the leeward shrouds but on both sides of the rig, to the point that it just does not seem feasible. Can you guys share what you find has won races in Light?
Medium/Heavy - We've also tried bumping up to 1600 for more spirited nights but find that the sail just seems to be choked. We've had better success just leaving the Base setting for these conditions. Note, there is typically a good deal of chop when the wind is here, have had limited nights with flat conditions that might warrant a tighter rig. Thoughts?
Heavy - 2000 just seems to be WAY too tight on the rig. Perhaps I'm just nervous about high tensions, I understand the rig is rated for this, but it just seems too tight. Note, in these conditions we're typically reefed as our smallest jib is a 140% (anyone have a serviceable #3 they'd like to sell, let me know)
Couple notes on our setup. Rigging is 1/4". Main is a Quantum from around 2010 era, not bagged out, one full batten three half battens. Head sail is a 161% UK from around 2010 era as well, decent condition not bagged. Second head sail is a 140% North Sail, unknown year, fair condition. We have a roller furling system installed, don't use it for racing, but head sails use the foil.
Due to different Loos Gauges (I have the Model B) out there, please use pounds (lbs) of tension in this thread if you can or clarify what gauge you are using.
Looking forward to see what can of worms I'm opening up on this topic!
Following the "Rig Tuning" guides saved under Info, specifically the North Sails Quick Reference Guide, have been questionable.
North Sails Quick Reference Guide – Version 1.0
Wind V1 (Caps) D1 (Lowers) Headstay turns from 0
Base Setting 1050 950 15
Light (0-7) 450 250 10
Medium (8-12) 1050 950 15
Medium/Heavy (13-17) 1600 1600 20
Heavy (18+) 2000-2200 2000-2200 20-30
We've been following the Base Setting to start, results have been okay here. However on both Light and Heavy ends of the spectrum these numbers just don't seem to work?!
Light - 450/250 makes my shrouds complete noodles, not just on the leeward shrouds but on both sides of the rig, to the point that it just does not seem feasible. Can you guys share what you find has won races in Light?
Medium/Heavy - We've also tried bumping up to 1600 for more spirited nights but find that the sail just seems to be choked. We've had better success just leaving the Base setting for these conditions. Note, there is typically a good deal of chop when the wind is here, have had limited nights with flat conditions that might warrant a tighter rig. Thoughts?
Heavy - 2000 just seems to be WAY too tight on the rig. Perhaps I'm just nervous about high tensions, I understand the rig is rated for this, but it just seems too tight. Note, in these conditions we're typically reefed as our smallest jib is a 140% (anyone have a serviceable #3 they'd like to sell, let me know)
Couple notes on our setup. Rigging is 1/4". Main is a Quantum from around 2010 era, not bagged out, one full batten three half battens. Head sail is a 161% UK from around 2010 era as well, decent condition not bagged. Second head sail is a 140% North Sail, unknown year, fair condition. We have a roller furling system installed, don't use it for racing, but head sails use the foil.
Due to different Loos Gauges (I have the Model B) out there, please use pounds (lbs) of tension in this thread if you can or clarify what gauge you are using.
Looking forward to see what can of worms I'm opening up on this topic!