Ken,
A lot of people have tried different things with the topping lift, and so it’s likely there are differences between the manual, your boat, and my pictures. So, it’s not surprising if something’s confusing. But it’s hard to know without seeing your set-up what difference is the source of the confusion. So, I’m going to provide a few more pictures, then cover the waterfront and hope the answer you’re looking for is in there somewhere. (Despite being labelled “New set-up”, these pictures are actually older than the ones in my previous post, and thus show some other possible things you could be seeing.)
If these pictures and the long essay below don’t help, post a picture of your set-up and we can take another pass.
Let’s start by noting that the, with a wishbone boom, we use its weight and angle is to control the sail shape instead of having a boom and boom vang. That’s why its height at the aft end needs to be adjustable. (There are reasons to do this while sailing if you’re a hardcore sail trim tuner, but it’s also really important when raising /lowering the sail or when reefing.)
Nonsuch 26’s were spec’ed in the manual with a 7 x 19 wire “boom topping lift” which runs from the top of the mast back towards the aft end of the boom. It is not supposed to be directly attached to the boom, but terminates in an eye, to which two things are usually attached. One is a short piece of “keeper line” that goes from there to an eye on the back of the boom. The keeper sets a bottom limit on how far down the boom end can drop – ensuring it can’t land on our fragile skulls. The other thing on the eye at the end of the wire is a block. The purpose of that block was to allow you to adjust the vertical angle of the boom up or down.
In the original set-up, this was a single block. The “topping lift control line” used to adjust the boom angle (i.e., its height above the cockpit) ran from the same eye at the back of the boom, up through the block hanging off the wire topping lift, back down from there to a cheek block on the starboard outer edge of the wishbone, and from there to a cleat a few feet forward on the starboard outer edge of the boom. (At least, this is how my boat came to me.)
However, people found several problems with this arrangement. The boom is frigging heavy, and a single block doesn’t help much in handling the weight. The boom is moving around, and it’s not exactly safe trying to pull and recleat a line on its side while it the boat are bouncing around on the water. The topping lift keeper line could catch on the cheek block or cleat when flopping around while raising the sail, so that you couldn’t fully drop the boom as needed for sail shape.
Thus, a number of people made two kinds of changes, the devil being in the details of how they made them. The differences between what you see on your boat and what my pictures show depends on whether you have a set-up like described above, or some version of one or both of those changes.
One change was to increase purchase by replacing the single block hanging from the wire boom topping lift with a pair of (usually) double blocks, one shackled at the boom and one hanging from the boom topping lift. I’ll ignore choices of block arrangements beyond observing that what I showed in the previous post is not the most common way. If you search this group for “topping lift blocks”, there’s a lot of good information there and some better ideas.
The other change was to replace the topping lift control line with a much longer line that could come back to the cockpit with the reefing lines. I.e., it runs forward along the bottom of the starboard side of the wishbone boom, to a hanging block on the bottom of the forward end of the boom (next to the block for the reefing line), down to the mast, and back to the cockpit. This second change means that this longer topping lift control line would run parallel to the aft second reef line pictured on the 23rd and 26th pages of the Nonsuch 26 manual. If what you’re seeing on your boat is the original shorter topping lift control line that cleats off on the boom, maybe that’s what’s confusing you.
Also, there are several ways to lead the longer line, and that could be another source of confusion. Many people use the cheek block to lead the line forward and just bypass the cleat on the boom, as depicted in the attached “Old topping lift w problems noted” pic. (And yet another approach is shown in the pics that I see Ernie Abugov’s posting while I type this.)
I chose to do a floating block and run the topping lift control line between the two sides of the wishbone in one step, shown in these pictures. In a later step, I upgraded the blocks and used a thinner, more flexible, high tech line to get to the set-up shown in my original post.
Running along the bottom of your boom on both sides are a series of eyes or blocks for routing lines forward. Depending on what you’ve got, there might be separate sets on starboard for the aft reefing lines and the topping lift control lines or the lines share them.
Ernie’s right that all the boats are rigged about the same, except for scaling block size with boat size. He’s sailed his a lot longer than I have mine, and generally seems to be smarter than me, so his posts may make this unnecessary. But, having typed this much, I’m gonna hit “send” anyway.
– Bob
Solar Wind
Nonsuch 26C #143
(attachments)