The cable on my Wanderer is 3/16" ss cable. My plan is to replace with 3/16" Dyneema as I've seen a number of others used it - all the strength of wire rope but less prone to damaging the tube, abrasion resistant so less damage from said tube, no galvanic corrosion, or MEAT HOOKS. I'm planning to have an eye spliced onto one end with a thimble, then attach the other end to the existing cable under the boat and pull it up into the boat by drawing the old cable up inside the cabin.
I took a look at the 2 sheave boxes and what I'm hoping is bronze tubing that leads the pennant up to the winch. It looks fairly horrifying to have to replace. Access to the lower sheave box is lousy. Not sure if I need to replace / service but I found some small spots of rusty red goop by where the lower sheave box meets the bottom of the boat.
If anyone has had to replace or service the sheave boxes and tubing I'd really like some insight on the warning signs and what to do. I couldn't find anything on this.
I plan to take a much harder look this weekend and look for cracks or signs of leakage in the pennant tube assembly. The area where the cable enters the boat has always been dry in my 5 years of ownership, but I'd like to keep an eye on it as failure there (or anywhere in the tubing) could really raise my blood pressure.
Thanks for all your comments and insight to date. Keep em coming!
Checked out the centerboard pennant on my Wanderer this weekend. There is quite a bit of wear where the wire exits the tube before winding on the take up spool. It also seems that there is a slot in the end of the brass tube that looks like it has been worn by the wire. I think the wire is damaging the tube while the tube is damaging the wire. Definitely needs replaced this spring and I have a few questions.
What size wire rope to use? The existing wire looks to be 1/8 inch but some have mentioned using 3/16.
What kind of wire? Stainless? 316? 7x7?
What's a good source? Rigging shop?
I think if I cut a 1/2 inch off the tube the wear spot will be removed. I think the tube was moved a bit when the boat was repowered with a Yanmar.
Thanks for the help.