New one string method
Experimenting yet again.
I like it - hope you can prove it works. The current systems boggle the mind...
Didn't Jacko work out and fit an arrangement very much like this for Lounge Lizard (3484)? IIRC it still had it when Rob Heath first had the boat but there were problems with it and he abandoned it for the more conventional stringing system.
I currently have the Jacko-built 'Steppenwolf' sitting in my workshop and it does indeed have an almost identical lever system. I know that Keith C spoke to him about it a few months ago and the general feeling was that the Winder system was far superior.
I met with with Keith C last month when he was over, and ran the idea of levers past him. The main question was would it work, we couldn't see why not. He did mention that someone had some years ago tried a lever system.
Hi Miles. If you email Keith, he's got some photos of the Steppenwolf lever on his computer. It does appear to be very similar to what you are currently trying. The general feedback was that it did work although it was felt to be inferior to the Winder system therefore the idea was dropped. Inferior in what respect I do not know. Keith will be able to tell you more. The travel certainly appears limited on Steppenwolf, and in reality it is still quite complex. I was initially going to go down this route as well on my new boat, but decided against it. The 'conventional' one string system is a thing of great beauty when set up correctly.
I think the lever ran into problems with the amount of travel it had - or rather didn't - have.
The system on Steppenwolf was put in by me when the boat was built in 1994, It had all the travel required, It was altered after I sold the boat, The mast went forwards with one string, and back to the controlled stop when the main was centered at the start of the beat.
I can get a fair amount of travel on this (at least the same as the all string system I tried) a different lever can obviously increase that.
We had the lever system from new on 3484 then later refined with Jacko on 3551 with an early Selden carbon rig. Shrouds and lowers connected in with separate control for rig tension. The idea was to have something almost automatic, as the pressure on the spinnaker would 'pull' the rig upright downwind, then at the leeward mark use mainsheet tension/kicker to rake back 'automatically'. There was an adjustment under the deck next to the mast, to pre-set how far back to rake and another on the starboard side that would allow the crew to pull the rig upright if going lighter upwind. Both deck stepped and the kicker was attached conventionally.
jib haliard had a 2-1 pully to get the ratios correct. with the mylar deck, it was very easy to service, and worked very well.
I developed the Jackson 'no string' system further on my Lawrie Smart NSM1, Substitute, when I deck stopped it. Ever mindful of a bargain, I wanted to deck step as cheaply as possible, so used the old strut lever as the raking rig lever. The fixed end was not actually fixed, but free floating and had the rig tensioning purchase attached to it. The lever floated between two vertical posts which formed the mast support from hog to deck. The forestay came straight through the step (very fiddly when rigging) and hooked onto the lever the shrouds came up from turning blocks on either side of the hog and were also attached to the lever. lots of careful calculation to work out the ratios of distance from pivot point to ensure that when the rig raked the relative tensions in forestay and shroud remined the same. When you applied the rig tension between the lever end and a fixed point under the mast step, it pulled up on the shrouds applying tension to them, and at the same time applied tension down on the forestay. There were two simple cleated purchases on the lever to limit travel and I used these to set the rake limits dependant on wind strength and then just left them untouched while sailing, unless conditions changed dramatically.
typos Mine's and etc. not ets.
You need to make sure the jib tack stays as low to the deck as possible, no air must escape between the ib and the deck.