My main sail size below
Main 16.45 sqm 8.85 9.20 3.54









http://users.accesscomm.ca/gbabish/double.html

My other option is below




you turn the original main sheet upside down and run the sheet across to the mizzen and down but still would have to adjust the traveler

I would have a soft spray dodger either way

I have made a instrument pod Id like to fit on the hatch cover where the original main sheet track is located
So I either make a bridge main sheet track lots of b.o.at. dollars and time
'

SandS said..

the double sheet set up looks like a great idea !!!!!! .......... a bit more mucking about to trim the sail , but that's sailing the boat !...

there are some clever people around !!

it looks a bit fragile around cabin-top connection .... they look like screws , bolts would fix that .

Yes it would be after going about but even with a sail track you still have to trim it was well and with a dodger in place you have to start running sail track ropes through the dodger.
What I like about it is its a jibe preventer as well in a way

My main concern is the ratio for main sheet blocks

they use 5 mm bolts

www.harken.com.au/productdetail.aspx?id=5392&taxid=4803





This is what I had in mind and braced inside the cabin I was thi9nking of fitting them on the out side of the hatch cover roughly where the existing sail track fits
slightly forward so it would clear a spray dodger
To me its much the sme idea as the admiral cups main sheet



only with out the winches and no sail track


Im not abosolty sure but I think the above main is 106 sq foot ( roughly 10 sq meters) Mine main is 16 sq meters
Below quote off the link

While beating in heavy winds you can trim the boom to windward, ease the main sheet to put twist in the main sail so that the top is eased downwind and spills some of that overpowering wind. While beating in really heavy winds you can depower the entire sails by trimming the boom leeward keeping a consistent flat mainsail, with a little luff in the entire leading edge. Off the wind you can use the leeward sheet only to get a more directly downward pull on the boom, and a flatter more powerful mainsail shape.
The disadvantages are: This system might require a little more tweaking after tacking to get the boom right where you want it. But you have that same issue with a traveler to adjust it after a tack (unless you had the traveler car at centerline already, in which case you really were getting no benefit from having a traveler). It will take more care before jibing to make sure you have slacked the appropriate sheet sufficiently to allow the main sail to change sides. Again you have that same issue with a traveler, to re-adjust the traveler car to where you want it. Concentrating the attachment at one point could result in a very high amount of sheer forces concentrated at one point on the boom.

Hi HG

With the first picture if you were hard on the breeze would the boom have a tendency to lift unless you had both sheets tensioned

Regards Don

madmission said..
HG
I dont like the idea a lot of duplication
Give me an efficient mainsheet / traveller over instruments any day

I am not sure that a cabin top mounted traveller in front of a dodger (my Sailmaster has this) is all that efficient to use

My previous Spacesailer had the traveller across the cockpit seats and was accessible when helming and was a lot more user friendly

Regards Don

This is my traveler
I am sure its not everyone's cuppa tea
But sure works well in puffy conditions and sheeting outboard when i no longer have vang due to boom roller reefing.

I have been looking at the Hanse yacht they use the German admirals system which like but didn't want a winch ( Boat dollars ) but when I add a spray dodger.
the original system becomes harder to use . It works by running the main sheet down the mizzen but you still have to run the main sheet track ropes to trim.
Im not real happy fitting the main sheet track back on I pressed it straight again it had a bow in it so it distorted the hatch cover also the retaining mounting bolts that went through the sail track , hatch cover and then fixed inside the cabin were badly bent Id rather not refit it.
I looked at a schaefer second hand bridge main sheet track ( in USA) but might be just as well to add a winch as it could be utilized with a deck organizer. and run the Hanse sheet system.
The main reason I'm into this now is I need to refit my cedar in the cabin roof as I dont want to remove it later to fit my main sheet system. I removed three planks either side to make it easier to run some tycab wire across the cabin and also to run some wire for the cabin top solar panels.
Thats the problem I find Id like to finish a job and then focus on the next but very time some thing else gets in the way and you end up with far to many uncompleted tasks.
Many thanks for every ones input