Catalina Direct had OEM compatible metal ball bearing sheaves for the C27 mast top. When I replaced my originals, that is what I used. Probably they still do. Were about $70 each instead of $15, but worth it. I replaced the deck ones too, but OEM parts not ball bearings. Maybe something I'll look into. Mostly with the deck organizers the problem I have is salt build up causes them to lock, mine need to be sprayed out and hand rotated regularly.
John Harker C27 Prana #6261 Santa Cruz Phil Agur wrote: > > > John is probably correct, if it’s an older boat the sheaves at the top > of the mast may need replacing, however some skippers up size lines to > make them easier on their hands and they actually make it harder. > > > > Braided lines take force to move all those fibers past each other to > bend around a sheave. When a line get upsized they have more fiction > points (more fibers) and that have to move further to bend. So just > going from 5/16” line to 3/8” can make operating the halyard a lot > more work. > > > > Wing Tip’s main goes up all the way by hand but it wasn’t always so. I > replaced the sheaves in the Garhauer deck organizers with Harken ball > bearing sheaves. They look stock but perform much better. In fact > every single block on Wing Tip with the exception of the ones in the > mast are now ball bearing blocks. > > > > *Phil Agur* */s/v/** Wing Tip* > <http://www.catalina27.org/public_pages/profile270.htm> > C270 LE #184 MMSI 366901790 > > > > *From:* [email protected] [mailto:[email protected]] *On > Behalf Of *John Harker > *Sent:* Monday, March 22, 2010 9:06 AM > *To:* [email protected] > *Subject:* Re: [IC27A] Way Too Much Tension on the Halyards Under Load > - Please Advise > > > > > > Could be the sheaves inner hole has elongated. So it spins with no load > and locks with load. How old are they and do you know if they have ever > been changed - from my experince and others on this board it is clear > the original have a finite lifespan. > > John Harker C27 Prana 6261 Santa Cruz > > Don Brooks wrote: > > > > > > Michael, > > If you are having difficulty hoisting a person up the mast with a > > cabin top winch, that's normal. You should be able to hoist the > > mainsail all the way up by hand with moderate effort. The boom should > > be perpendicular to the mast, or slightly higher to keep the leach > > loose. If that is not the case, then you should look for a > > problem. Is your halyard showing any unusual signs of wear? That > > could indicate a binding block at the base of the mast or cabin top. > > Your halyards could be twisted together inside of the mast or binding > > on the electrical wiring at the mast base. > > Don, #6293, Niceville, FL > > > > --- On *Sun, 3/21/10, Michael /<[email protected] > <mailto:mlong9876%40aol.com>>/* wrote: > > > > > > From: Michael <[email protected] <mailto:mlong9876%40aol.com>> > > Subject: [IC27A] Way Too Much Tension on the Halyards Under Load - > > Please Advise > > To: [email protected] <mailto:IC27A%40yahoogroups.com> > > Date: Sunday, March 21, 2010, 10:22 AM > > > > > > > > I was having a lot of difficulty hoisting the main so I lubed the > > entire track, the cars on the main and checked for obstructions on > > the way up. I went all the way up to the top to see if there were > > any obstructions up there like maybe the halyard jumping off of > > the sheave or maybe even a broken one. Because of the difficulty > > in hoisting me on the main halyard, I decided to come down and go > > up on the jib halyard. I had the same problem. Both halyards move > > up and down effortlessly, without friction, but the moment there > > is any load, it takes tremendous energy to pull them up. All of > > the sheaves spin freely and are intact. I lubed everything at the > > masthead and cannot figure out why they aren't working properly. > > The halyards are rope and obviously internal and appear to be in > > good condition. > > > > If anyone has experience with this or any ideas on what to do, I > > would really appreciate them. > > > > Thank you, > > Michael > > > > > > > >
