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

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