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post #11 of 14 Old 12-09-2013
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Re: Sailboat performance change

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Originally Posted by Delta-T View Post
If understand it correctly, the head sail gives you power and the main gives you heal (and weather helm adjustment).
This is not universally true. It is true of many 70s boats that were designed to IOR handicapping rules.

Saying that the main gives you heeling and weather helm adjustment is also not accurate. The main still gives you power, it is just that most of these boats had 2/3rds of their sail area on the head sail. You can prove this by dropping your main sail and seeing that you slow down (unless you are in heavy air) and won't be able to point as high.

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post #12 of 14 Old 12-09-2013
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Re: Sailboat performance change

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This is not universally true. It is true of many 70s boats that were designed to IOR handicapping rules.

Saying that the main gives you heeling and weather helm adjustment is also not accurate. The main still gives you power, it is just that most of these boats had 2/3rds of their sail area on the head sail. You can prove this by dropping your main sail and seeing that you slow down (unless you are in heavy air) and won't be able to point as high.
I sail 80% of the time with only the 150% head sail. Boat is well balanced this way. And yes, head sail gives me better pointing. Sailing with main only is not an option for my boat, boat goes nowhere without head sail. I always wondered why, assuming the placement of the mast is too far back. But now we are going OT. And, as you point out performance is different for each size and design of boat.

Eric
Delta-T
1968 Bristol 32 Keel/Crb Hull 26
Narragansett Bay RI USA
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post #13 of 14 Old 12-10-2013
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Re: Sailboat performance change

My first thought with regards to performance would be that because the center of effort of the sail is raised, then, given that there is less sail area, at the wind speed that would produce the same amount of power as the bigger/lower sail, the heeling force would be greater... but probably not enough to worry about.

With regards to the dodger design: I would lower it, and look over the top.

Bristol 27
Cirque
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post #14 of 14 Old 12-10-2013
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Re: Sailboat performance change

Dodgers should be fold-downable. Maybe larger plastic windows would help. Walk the docks to see one that you like and then ask the maker for ideas . Smaller main affects balance, probably not a big item on the Cal as they use a variety of jibs.

Walt Elliott
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Puget Sound
Cal-29
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