One of the items on my list of projects is to rethink our main sheet system. As background, she's a heavy 32', displacement
probably around 10500. She was designed with a relatively low aspect ratio rig (that is relatively stubby mast
with a long boom: P=32 E=13.8) However, her current
main sail is a high aspect ratio sail that is the right height, but ends about 3'-4' short on the boom. It is a flat, fully battened sail with almost no roach. Sail area is supposed to be 220 square feet, but I believe the way it is now to be closer to 180 sq. ft. But I digress.
The mainsheet system is a 4:1 system on two fiddle blocks, the bottom one having a cam cleat for locking. It has a single
boom point attachment, about 6" from the end of the boom (a ~8" "t" shaped plate slipped through a slit in the boom and riveted at ~ 8 points). There is no winch
for the main sheet. As we're not racing
(and never will on this sturdy girl) this simple system works for us, for now. We may reassess once we've had the boat for a while longer. The 4' traveller is aft of the cockpit
. Here is where the two problems crop up: the lower fiddle blocks are held on with the tiniest of lightweight shackles. This is not OEM and I do not trust it (granted, it has survived for likely 15 years). Also, the traveller is not controlled by a line, but by two "stops" which you can slide along the track and lock into place. I find this very slow and cumbersome to use.
(sorry, I have no detailed photos of the system. The ones attached are from the original inspection
We were recently gifted a used traveller track and matching car, in good shape and significantly beefier than the one we have. It is the identical length to the one on the boat, and will fit perfectly. It will allow for a stronger attachment point to the sheets
, as well as the possibility of adding control lines (the old stops wouldn't fit the new track anyway).
Q: How would one design the traveller system? The cockpit
edges are teak
and though adequate for leaning on, will not be strong enough for the weight of the fully loaded main. Would a 3:1 ratio be enough for the traveller? If we up the sail size to spec, would that still suffice?
I'm thinking of adding a cheek block with a becket to the car. I would run likely a line from the becket outboard
to a block mounted somehow at the ends of the tracks, back to the cheek block on the car, then slightly aft of the track to a block that will redirect the line just outside of the cockpit with a cam cleat. See my nifty diagram (sorry, only a few minutes to make it up!)
Any other ideas on how to design for this setup?
Q: Is a one point boom attachment adequate? I understand newer models have gone away from this system. Though I get that it may be superior, is it necessary? What we have seems to work; if it ain't broke, don't fix it?
Hope that was clear! Thanks!