Hey Randy, Great questions regarding sail trim. Can't wait to see some pictures of your assym setup. I still haven't gotten the A sail up but I put up some pictures of the sprit on my Facebook page: https://www.facebook.com/chuck.scheaffer
Chuck S > On 07/10/2022 9:45 PM Randy Stafford via CnC-List <cnc-list@cnc-list.com> > wrote: > > > Listers I am appealing to your collective wisdom on rigging and trimming an > asymmetrical spinnaker. > > For Grenadine’s 50th birthday this year, I added a new furling genoa on a new > Selden 204S furler, a retractable Selden 75 bowsprit, and an A2 asymmetrical > spinnaker on a Selden GX10 top-down furler. I’m installing the latter two > birthday presents on Tuesday. > > This is all to improve my downwind performance, and facilitate fast upwind / > downwind sail plan changes at the marks and on the course, in my club’s races. > > I guess my specific questions are as follows, but I would appreciate any > additional tips you old salts might offer. > > 1. Leading the tack line - I’m repurposing the foredeck padeye and block, > side-deck fairleads, and cabin-side cam cleat for my former pole down line to > run the asym tack line, which of course goes through the bowsprit lengthwise. > My pole down line is too short to be the asym tack line, so I’ve repurposed > a little-used genoa sheet. I figure if the deck hardware was sufficient for > a symmetrical pole down line, it ought to suffice for an asym tack line. Am > I wrong? > > 2. Where to put the turning blocks for the asym sheets: same place as for the > symmetrical, or farther forward? For the symmetrical turning blocks I use > snatch blocks at the stern pulpit braces. > > 3. What winch to lead to / where to trim from? My main competitor leads his > asym sheets to cabintop winches, and trims from the windward side deck so the > trimmer can see the whole sail. > > 4. When and how much to ease the tack line? By default I assume it’s > tensioned so that the aysm’s tack is at the bowsprit and the luff is taut, > but it can be eased - how much, and under what conditions? > > Thanks in advance for any wisdom you mmight share. > > Fun fact: the sail is black, with a logo of an M67 grenade on both sides, > because of the etymology of my boat’s name, and because of her color scheme > (red topsides, white deck and cabintop, black canvas. > > Cheers, > Randy Stafford > SV Grenadine > C&C 30 MK I #79 > Ken Caryl, CO
