Good advice, worth every bit of 3.5 cents ;>) If your boat is on the hard, one trick is to set up a ladder far enough in front of the boat to get a clear line of sight from the bottom of the keel up the mast. Then using a plumb bob attached to the ladder sight the keel/mast alignment. The mast should be in line with the keel. This is more important than having the mast square with the deck as some (many) keels are not square with the hull.
When finished you can make the measurements mentioned below in order to repeat rig placement in the water. If youre not on the hard, Toms method will get you plenty close enough. Mark, Gratis (6115) NOLA From: [email protected] [mailto:[email protected]] On Behalf Of tom Causin Sent: Saturday, May 29, 2010 9:56 AM To: [email protected] Subject: Re: [IC27A] Boat points much higher on a starboard tack than on a port tack I'm "leaning" toward the Mast Not in column from side to side. A simple tape measure attached to the main haylard will do the trick. You have heard it before, but DO make sure you are measuring from the same point amidships. Best done by using the tape measure and measure from the center of the bow just under the deck join, along the side of the hull at the deck join back to a point just aft the mast. Make a mark and note the measurement. Reproduce the same on the other side of the hull being exact from the start point to your mark. Now hoist the measuring tape up the mast and apply the same pull strength (fish weighing scale) to the boats deck at the same places (your measurement points) on each side of the boat. For for and aft tune it is ultimate to get your yard to "level" your boat and hoist a plumb bob up the mast using some rig that will hold the string 3 inches (or what ever) off the back side of the mast. if EVERYTHING IS trued up the plumb bob should be 3 inches aft of the mast hittinig the centerline of the hull. From there you do a search on Mast Rake to find out if anyone has found that sweet spot for a Cat27 Oh to live in a perfect world!!!!!! sorry, I think I gave 3.5 cents there!! On Fri, May 28, 2010 at 11:39 PM, John Harker <[email protected]> wrote: When I said front/back, I meant in a sideways direction. As in off center front to back. John Harker wrote: > > > I think one to three degrees of keel being crooked front/back might not > be noticed out of the water, and would make a difference in pointing. > And that the keel being off center both vertically and front/back is > very possible. This is not unique to Catalina. The solution with > racing boats is to 'template' the keel. Which refers to buying a fully > dimensioned template model of the designed keel (usually minus some > weight) and having the yard precisely grind it to that shape, and of > course the right angles. > > John Harker C27 Prana #6261 Santa Cruz > > Phil Agur wrote: > > > > > > Judy, > > > > > > > > While it certainly wont apply to a C27s keel I had a friend with a > > wing keel C22 that swore in ultra light wind a wing keel would always > > turn. We all chuckled until we got a look at his keel on a trailer a > > couple of years later. The lead alloy stub of the keel was indeed bent > > 10° to 15° so the wing was no longer level. The owner who was all over > > doing a technical tuning of the mast just never looked. > > > > > > > > Phil > > > > > > > > *From:* [email protected] <mailto:IC27A%40yahoogroups.com> <mailto:IC27A%40yahoogroups.com <mailto:IC27A%2540yahoogroups.com> > > [mailto:[email protected] <mailto:IC27A%40yahoogroups.com> <mailto:IC27A%40yahoogroups.com <mailto:IC27A%2540yahoogroups.com> >] *On > > Behalf Of *Judith Blumhorst, DC > > *Sent:* Thursday, May 27, 2010 12:29 PM > > *To:* [email protected] <mailto:IC27A%40yahoogroups.com> <mailto:IC27A%40yahoogroups.com <mailto:IC27A%2540yahoogroups.com> > > > *Subject:* Re: [IC27A] Boat points much higher on a starboard tack > > than on a port tack > > > > > > > > > > > > Or the keel is crooked and really far off the centerline ;) ... just > > joking, that's not likely. It would have been VERY noticable to > > the eye when the boat was hauled. > > > > > > > > Are you sure you're not being set or lifted by the current on one tack > > more than the other? > > > > > > > > Seriously, the first thing to do is check your "instruments". What > > are you using to indicate how high you are pointing? > > > > > > > > I wouldn't expect to see a drastic difference from one tack to the > > other if the mast is slightly off from vertical. If it were grossly > > off vertical, you might see a difference.... on my boat the keel is > > slightly off vertical, maybe 1 or 2 degrees, which is enough to see > > when she's hauled out. It doesn't make squat worth of difference from > > one tack to another. Most Catalina's list more to one side than the > > other anyway... > > > > > > > > Fair winds, > > > > > > > > Judy B > > > > 1977 C27 TR #3459 "Bijou" > > > > http://www.blumhorst.com <http://www.blumhorst.com/> <http://www.blumhorst.com <http://www.blumhorst.com/> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ---------------------------------------------------------- > > > > *From:* michael glanz <[email protected] <mailto:mga_group%40yahoo.com> > <mailto:mga_group%40yahoo.com <mailto:mga_group%2540yahoo.com> >> > > *To:* [email protected] <mailto:IC27A%40yahoogroups.com> <mailto:IC27A%40yahoogroups.com <mailto:IC27A%2540yahoogroups.com> > > > *Sent:* Thu, May 27, 2010 12:04:12 PM > > *Subject:* Re: [IC27A] Boat points much higher on a starboard tack > > than on a port tack > > > > > > > > Your shrouds are not equal length or your sheets are attached at > > different points on the tracks or both. Get a rig tuning guide or > > have a rigger do it correctly. > > > > --- On *Wed, 5/26/10, Michael /<mlong9...@aol. com>/* wrote: > > > > > > From: Michael <mlong9...@aol. com> > > Subject: [IC27A] Boat points much higher on a starboard tack than on a > > port tack > > To: ic...@yahoogroups. com > > Date: Wednesday, May 26, 2010, 5:56 PM > > > > Any thoughts on this? Remedies, etc? > > > > Thanks, > > > > Michael > > > > > > > > > > ------------ --------- --------- ------ > > > > Yahoo! Groups Links > > > > > > (Yahoo! ID required) > > > > > > > > > >
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