Jib halyard locks on dinghies

I will look and see if sketches are still around .

 

Just look at the list of halyard locks sold by APS http://www.apsltd.com/c-970-halyard-locks-mast-rams.aspx

Essentially its a piece of metal plate with a bent tang and a slot to fit the halyard through. it can face UP or Down depending on whether you want the hook to be ahead of the sheeve (ala the Star mast) or after the sheeve. The advantage of ahead of the sheeve is that alignment is automatic, but it can be harder to make work or release and it also can work with internally lead halyards fairly straightforwardly

The advantage of after the sheeve is that release is much easier if you have an external halyard tail.

 

Yes they are simple to make.

I think no mater what if do I'll be having to make this lock myself.

The issue I have with the cover lock is that the point where the halyard locks must be precise. The jib halyard becomes the forestay and it is incorporated into the controls for the raking system to de power.

The nature of the rope cleat lacks the precision of a conventional halyard lock design that means you have a strop length and a bullet that mean that the locked length is always exactly the same

 

I don't see why it would lack the precision. It has some slip in it, but so does any system. In fact since it is "micro adjustable" unlike rack hooks or such, you can always mark a spot on your halyard for tuning, And when hoisting, insure that at release you are at "Point X" and verify that upon settling in at tension, the halyard is now at "Point Y"

 

I think this might be similar to what was earlier referred to. Scanned out of one of my old books, can't remember which. It allows the use of a (mostly) internal halliard.

-Thomas