C&C 30 MK1 Boom Adjustment - SailNet Community
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post #1 of 14 Old 04-11-2012 Thread Starter
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C&C 30 MK1 Boom Adjustment

Does the boom to mast have an adjustment? Can it be moved up or down?
The main sail I put up last weekend will not stretch out tight along
the mast. Its eather stretched out and now baggy or the boom needs to
be dropped to take the sagg out of it? Do sails get baggy past the
point os use?
Sorry for the moobie questions.
thanks for your help.



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post #2 of 14 Old 04-11-2012
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Re: C&C 30 MK1 Boom Adjustment

Looks like gooseneck casting is fixed rather than adjustable. You could remove it, drop it down a screw hole or two, BUT YOU WILL BE DRILLING EXTRA HOLES IN YOUR MAST.
Have you gone aloft (or looked with binocs) to make sure you have no obstructions up there? Looks like foot is also loose. Did you buy the boat recently? If so, are you sure it is a C&C 30 main or something that was substituted? In the long run I would get a sailmaker on board and have the sail recut.
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post #3 of 14 Old 04-11-2012
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C&C 30 MK1 Boom Adjustment

Your sail looks like it is in good shape but it is not all the way up. Be sure the halyard is not fouled.

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post #4 of 14 Old 04-11-2012
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Re: C&C 30 MK1 Boom Adjustment

The C&C 30 gooseneck is fixed, dont consider trying to move it.

There should be a black band at the top of the mast that marks full hoist, your halyard needs to raise the mainsail to that band.

The topping lift is too tight.

Note that C&C raised the boom a foot in '77, so a C&C main from an earlier boat would be too large on yours...but I dont think that is the situation here.
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post #5 of 14 Old 04-11-2012 Thread Starter
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Re: C&C 30 MK1 Boom Adjustment

Thanks for your help

Quote:
Originally Posted by sailingfool View Post

There should be a black band at the top of the mast that marks full hoist, your halyard needs to raise the mainsail to that band.
Cant see any markings on the top of the mast I will look again on Saturday.



The topping lift is too tight.
Heres the thing. The boat came with a Spin-Lock boom-vang. It looks adjustable bot I cant get it to move?? Do you know how to adjust this thing?

Note that C&C raised the boom a foot in '77, so a C&C main from an earlier boat would be too large on yours...but I dont think that is the situation here.

I purchased it from the origanal owner. He had 6 sails that come with the boat? Not sure what they are yet? He has Alzheimer's and cant remember? So I'm doing the best I can with what I have to work with. They are Scott sails and Jeckell sails on the boat. non have the C&C logo on them.
Here is a shot of the Boom vange.
Thanks for your help.
[IMG][/IMG]
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post #6 of 14 Old 04-11-2012
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Re: C&C 30 MK1 Boom Adjustment

You got some good gear on this boat!

The vang is a latching boom support.. it has an internal tackle (very powerful.. something like 16:1) The sliding knob with the orange/green under is the support latch. If the knob is in the orange zone it's a boom crutch/support and will not allow the boom to drop. Slide the knob to the green and it's a vang. If you're leaving it in the orange zone that's part of your problem.

You don't even need a topping lift if you install and use this vang properly. The latch can get difficult to operate, but it does work. You can get some info on line off the 'spinlock' site.

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post #7 of 14 Old 04-11-2012
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Re: C&C 30 MK1 Boom Adjustment

From the pictures, the topping lift is too tight. I would try disconnecting the topping lift from the boom.

It does not look like the sail is hoisted fully. You need to use the winch to get it the last 1/10 of the way up and get the proper tension.
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Re: C&C 30 MK1 Boom Adjustment

I'm having a problem betting my sail to flatten out. I need to be able to drop the boom some? so what position does it need to be in to adjust the hight of the boom?
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Re: C&C 30 MK1 Boom Adjustment

Quote:
Originally Posted by ltgoshen View Post
I'm having a problem betting my sail to flatten out. I need to be able to drop the boom some? so what position does it need to be in to adjust the hight of the boom?
Get a winch on your halyard and hoist the sail until you get a wrinkle in the luff parallel to the mast.

Ease your toppinglift (wire from masthead to end of boom) and if you've got the vang installed make sure its adjustment knob is down into the 'green zone' so that it acts as a vang. Then pulling on the mainsheet will bring the boom down and tension the leech. Pulling on the vang line itself will also bring the boom down, but if you're beating in reasonable conditions mainsheet tension will be sufficient until you're off the wind, when the boom vang becomes more important.

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post #10 of 14 Old 04-11-2012
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Re: C&C 30 MK1 Boom Adjustment

The luff and foot still look loose and tack clew is at an odd angle, try squaring up the tack clew by dropping the pin (there should be 3 pin positions available) to a lower position in the gooseneck, this should help, plus definitely check your hoist to black band and outhaul too. I don't see how adjusting Spinlock/topping lift will tighten luff or foot
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