The threads should fit the same hole as the shaft. They typically cut the threads into whatever size bar stock is being used. It would take special engineering and machining otherwise. I'm not saying it doesn't happen, just not likely.
Josh On Sat, May 19, 2018, 9:02 AM David Knecht via CnC-List < [email protected]> wrote: > Thinking more about this, I dredged from memory a reason why the Selden > and Lewmar probably won’t work, but not because of the lack of a swivel. > The hole in the furler is 1/4” and they list the pin as 6mm which is > slightly smaller. However, I think the issues is that they don’t count the > diameter of the threaded portion which may be more than 1/4” such that it > won’t go through a 1/4” hole. I will swing by Defender at some point and > measure to see if this is true and report back (unless someone has one > handy). > > I don’t ever change sails while racing, and I do not change sails > frequently, but when I do it is because it is howling and I need a smaller > genoa, and that is a difficult time to be on the foredeck playing with 2 > sets of clevis pins and cotter rings, even bouncing around at the mooring. > Haven’t dropped one yet, but it will happen. Also, I am usually > shorthanded and I always want the furler available when I need it. Dave > > On May 19, 2018, at 9:45 AM, Josh Muckley via CnC-List < > [email protected]> wrote: > > Those look like they'll work fine. If you're not using a swivel shackle > the only thing that you have to pay attention to is the potential for > twisting of the sail foot. That's never been a problem for me since I'm > not racing. I can take the time to raise the sail and then attach the tack > once a clear and straight line can be seen. I love the engineering and > consideration that goes into Selden products. > > How often are you changing sails on your furler? > If you are racing and need to do quick sail changes why rig the furler at > all? Couldn't you just leave the swivel at the bottom? Attach the head > directly to the halyard and the tack would be attached to the normal > location on the furler drum. I'm pretty sure most furlers will still give > access to both furler grooves with the swivel down. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > Solomons, MD > > On Sat, May 19, 2018, 5:54 AM David Knecht via CnC-List < > [email protected]> wrote: > >> Aries is due to splash on Monday and spring projects are mostly done. >> One thing I have not yet done is replace the standard shackles on the >> Harken furler top and bottom units with snap shackles to make head and tack >> attachment during sail change easier. I have been looking at shackles to >> decide what to use and the standard seems to be swivel snap shackles. >> However, I also came across these non-swivel snap shackles that are much >> less expensive and seem like they might be suitable. My question is whether >> there is any need to use a swivel shackle in this application? Since the >> drum at the top and bottom can both rotate, I can’t see why you would need >> a swivel on the shackle itself. I was thinking about something like these >> and would appreciate the group's thoughts: >> >> >> https://www.defender.com/product3.jsp?path=-1%7C2259973%7C2260013%7C2260026&id=1943639 >> >> or >> >> https://www.mauriprosailing.com/us/product/SEL40604001R.html >> >> Aries >> 1990 C&C 34+ >> New London, CT >> >> >> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> <pastedGraphic.tiff>_______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > > Dr. David Knecht > Professor of Molecular and Cell Biology > University of Connecticut > 91 N. Eagleville Rd. > Storrs, CT 06269-3125 > 860-486-2200 > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
