Main Halyard slap underway

[Brian]

I have a CD33 sloop. When sailing upwind on port tack in winds above 12kts. the main halyard slaps the mast loudly. I have change the tension to no avail, though I may justb have to go harder. I'm also now wondering if this is a trim issue. Can anyone comment on this?

Brian
skipper Vita Brevis
CD33 Hull#105
Seattle, WA



capedory@earthlink.net

[Bill]

I have a CD33 sloop. When sailing upwind on port tack in winds above 12kts. the main halyard slaps the mast loudly. I have change the tension to no avail, though I may justb have to go harder. I'm also now wondering if this is a trim issue. Can anyone comment on this?

Brian
skipper Vita Brevis
CD33 Hull#105
Seattle, WA

Brian

I have the exact same problem!!!! However, I have thought is was a question of rig adjustment. It only happens on the port tack, and I have no idea what the prob is (if not rig tension)!!!!!!!!!

I look forward to see other owner responses.

Bill



cd25d@clnk.com

[Bill Cochrane]

I suspect it's some combination of wind angle and wind speed setting up a sympathetic vibration in the halyard. I've had it happen underway, at anchor, and in a slip.

Bill
Phoenix
CD 36 #114

I have a CD33 sloop. When sailing upwind on port tack in winds above 12kts. the main halyard slaps the mast loudly. I have change the tension to no avail, though I may justb have to go harder. I'm also now wondering if this is a trim issue. Can anyone comment on this?

Brian
skipper Vita Brevis
CD33 Hull#105
Seattle, WA

cochrane@clark.net

[Bill]

I have a CD33 sloop. When sailing upwind on port tack in winds above 12kts. the main halyard slaps the mast loudly. I have change the tension to no avail, though I may justb have to go harder. I'm also now wondering if this is a trim issue. Can anyone comment on this?

Brian
skipper Vita Brevis
CD33 Hull#105
Seattle, WA

Brian

Do you ever gt a "pumping" action from your mast? I do even just sitting in the slip!!! It also happen on a port tack and I can feel the boat vibrate with the pumping action! I have check it (mast) under sail and I cant discern any bend, so my next thought is the tension on the rig!

Any comments from follow owners?

Bill



cd25d@clnk.com

[Chris]

Brian - I have had a similar experience and found that if I remove several wraps from the winch and reapply my wraps as far out on the winch drum as possible the distance between the halyard and the mast is sufficient to avoid the bang - bang - banging.

I have a CD33 sloop. When sailing upwind on port tack in winds above 12kts. the main halyard slaps the mast loudly. I have change the tension to no avail, though I may justb have to go harder. I'm also now wondering if this is a trim issue. Can anyone comment on this?

Brian
skipper Vita Brevis
CD33 Hull#105
Seattle, WA

[Duane]

All,

I have had the same experience on my CD330 Mystic. My solution was a little more drastic that moving the halyard out on the winch. The masthead is actually designed for both internal or external halyards. So what I did was run both the main & jib halyard internal to the mast along with the staysail halyard which came that way from the factory.

It was a fairly straight forward installation and it not only relieves the banging halyards under sail and in the slip but provided UV protection for longer halyard life...

As far as the mast pumping issue raise by Bill, the cutter versions of the 33 and all 330 should be modified with running backstays...MANDATORY! If you look at what is supporting the staysail - the 3/4 shrouds - they are only about 1 ft. aft of the mast and allow an enormous amount of mast movement in a breeze. I made the addition last summer with Vectra and they work great...no hassle at all. Let me know if anyone has questions.

DY



yoslovd@aol.com