I think someone got it right when they mentioned the stretchiness without the core. My guess is it would furl better on a windy day than a calm day 'cause the line will be stretched and fit the drum easier. Just a theory
I was blown away when I saw how easily it unfurled. It had never done that before. After some thought I totally agree that some tension on the furling line will help the line spool up nicely and possibly even compress/stretch the line a bit.This may be the issue.
When unfurling the jib, you should keep some tension on the furling line as it wraps around the drum. This will help it to wrap the drum neatly.
If it runs free and fast you can get overlaps or poorly wrapped line.
90 degrees in relation to the furler makes sense. I did a bunch of testing and there was significant improvement with the new position. I'm hoping tension and/or a new line resolve the issue completely90 degrees is a right angle. i.e. the lead from the furling drum is straight out, sighting from the center of the drum. Many boats have a problem fitting the first swivel block for that line due to not having the 'right' place to anchor that block. When it's led poorly, the coil on the drum will pile up against one end or the other.
To a certain extent, blame the boat builders for not designing the area by the forestay attachment a bit better.
And, as noted, do keep enough tension on that line when feeding it out that it does not flop around and produce an overlap and jam on the drum.
That's good to hear that a new line resolved the same type of issue on your boat. My line is definitely dry and has increased friction. What's the rule of thumb for furler line length?To add to Big Easy's post, old line can swell and the surface can be less slippery. Edited to add (line needs to be a bit slippery to roll on the drum neatly) Also note different line types/manufacturers may not be exactly 5/16. IE: New England Sta Set 5/16' is slightly smaller than their 5/16" VPC.
I had the same type issues on my O'day. Solved it buy installing new NE Sta Set 5/16" with the first 10' at the drum de cored. Most of the 10' was the permanent 4 wraps on the drum, laying nice and flat. The rest was well buried under cored line when the jib was out around 40%. There was no issue with loss of strength or stretch of the de cored section.
This was on a Furlex 100 Furler.
It will be the length of the boat plus the length of the foot of the jib plus some extra for the drum and extra to have something to hold on to furl the jib. The answer will be about two times the length of your boat.That's good to hear that a new line resolved the same type of issue on your boat. My line is definitely dry and has increased friction. What's the rule of thumb for furler line length?
I hope you mean 5/16" line, 3/16" is a bit small to handle.If that works I'll replace the line with 3/16 or 1/4 so it can withstand higher loads