Rookie Question Re: Boom Height

[Scott MacCready]

When I fully raise my Main Sail on my CD25, it causes the forward end of the boom to slide up the mast about 8". Should I adjust the boom height so it always stays at this height or is that "sliding" necessary? I'm asking because I'm planning to add a bimini and the extra height would be nice. thanks again, Scott



smaccready@hotmail.com

[Andy Denmark]

Hi Scott,

Sounds like the bolt rope on your main has shrunk and needs to be released, otherwise sail shape will be lousy. Boom height will take care of itself if you do this. Also, it's an easy matter to recut the sail properly for bimini installation.

You have a good resource locally. Mark or LuAnn at Banks Sails here in Oriental can handle all of this, including the bimini. Give them a call (local) at (252) 249-3001. They will be glad to help you.

If you get down this way give a call.

Andy Denmark
CD-27 "Rhiannon"




trekker@coastalnet.com

[Mike Thompson]

I had the boltrope shrink on my CD-25. When I raised the main
without inserting the tack pin in the sail tack cringle, the
sail went up about 4 inches higher. I inserted a loop of rope
to bridge this gap (tying the pin to the cringle) to maintain
halyard tension. The sail shape was much improved.

Mike
formerly with GRACE CD-25
now HAVEN CD-28

When I fully raise my Main Sail on my CD25, it causes the forward end of the boom to slide up the mast about 8". Should I adjust the boom height so it always stays at this height or is that "sliding" necessary? I'm asking because I'm planning to add a bimini and the extra height would be nice. thanks again, Scott

tmike@ma.ultranet.com

[Bruce Bett]

Scott:

It is normal on a CD 25 for the boom to move up when the sail is fully raised. Since you say you're a rookie I'm going to give you some pretty basic stuff here, which you may or may not know. On the CD 25 the boom fits into the sail track and rides up and down between the open slot in the track and the deck. I, and think most owners have a sail stop in the track just below the boom for the boom to rest on when the sail is down. I have another one above the open slot to keep the sail from falling out of the track when it is lowered. When I raise the main I raise the boom until it is just about to come out of the open slot. I then secure the halyard, release the sail stop below the boom, and pull the boom down with the downhaul. I stretch the luff of the sail to various tensions depending of the wind strength and my tack. I have rigged a block and tackle with a 4 to 1 purchase on my downhaul. This is overkill but I like it. Again it is normal on a CD 25 for the boom to ride up and down between the sail slot and the deck. I hope this helps.

Bruce Bett
Sostenuto
CD 25 #496

When I fully raise my Main Sail on my CD25, it causes the forward end of the boom to slide up the mast about 8". Should I adjust the boom height so it always stays at this height or is that "sliding" necessary? I'm asking because I'm planning to add a bimini and the extra height would be nice. thanks again, Scott

bettb@macomb.edu

[Scott MacCready]

Thanks Bruce (and others), that's what I needed to know.



smaccready@hotmail.com