The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
I have a standard rig C-25 with a rope to wire main halyard. What width do we use? I measured 5/8th but wanted to double check. Is 7/16th OK? My lines come back to the cockpit so I need 41 feet. Thanks for your help.
It seems the "standard" is 5/16". Larger might jam in the mast-head sheaves (which should be replaced if you're replacing the original wire-to-rope halyards). My 5/16ths, the standard from CD matching their sheaves, was reasonable on the hands. 7/16ths, 5/8ths or even 1/2" is pretty big--I wouldn't go bigger than 3/8ths.
Dave Bristle Association "Port Captain" for Mystic/Stonington CT PO of 1985 C-25 SR/FK #5032 Passage, ex-OUPV, Now on Eastern 27 $+!nkp*+ Sarge (but still sailing when I can).
Given your wire-to-rope setup, it sounds like your only real concern is "in the hands " and sheaves in the deck turning blocks. A 5/16" diameter good quality, low stretch line gives plenty of strength. A 3/8" line might feel better in the hands. Anything over 3/8" is probably overkill and a waste of money. Before I changed out to all rope, I went with Sta-Set X line. You might try it on one halyard and see how you like it, then decide if you want it on both halyards. It is a little stiffer than Sta-set. I remember another member bought New England Ropes VPC line and was very happy with it. After switching to all rope, I selected the VPC line and was pleased with it.
DavidP 1975 C-22 SK #5459 "Shadowfax" Fleet 52 PO of 1984 C-25 SK/TR #4142 "Recess" Percy Priest Yacht Club, Hamilton Creek Marina, Nashville, TN
Make sure you check on your rope clutch to see what diameter it wants. I assume you have them since your lines are coming to the cockpit. I too have rope to wire halyard and think mine is at least 3/8 maybe 7/16. Grab a hold of the rope and see how it feels before you buy.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.