main traveler line

[DonC3222]

I have a Hunter 340. I just needed to replace my main traveler line (on the archway). The owners manual said to use a 5/16, LS line with a small eye. I ordered it and when I went to replace the old one, this new one looked smaller in diameter than the existing one. Is this going to be fine to use, or do I need a stronger line?

 

[Bill Roosa]

lots of owners replace lines with larger diameter ones for a variety of reasons. If the manual says 5/16 then you can be pretty sure that is going to be strong enough. My only concern is if you are using a "cheap" rope (like cloths line) which you appear to not be doing.
As more convincing proof, you pull on the traveler line with your hands and don't use a winch right. The most you can pull, even using your legs against a purchase is maybe 300 lb. That 300 lb is the tension in the line throughout the traveler. Your mechanical advantage comes from having multiple lines each with 300 lb in them. But each line only sees the line tension. Pretty sure most 5/16 lines are in the 1000+ lb working load range so you have a factor of 3+ that a gust could put on the traveler when it is locked down and still be in the working load range. Imagine having to pull three times as hard on the traveler to get it to move and you get the idea of the loads it can take before you start having strength issues.

 

[Stu Jackson]

Old line swells with age. You're fine. In fact, do NOT go to larger line, 'cuz if it swells, it'll rub against the cheeks of the sheaves and bind up.

 

[DonC3222]

Thanks you so much for the advise. This is exactly what I needed to feel better about the line choice.