Others have expressed their appreciation for an asymmetric spinnacker which I also echo. All of their points are valid, however you may find that the effort involved with setting the A-sym just isn't worth the mild improvement in speed/performance over an oversized headsail and whisker pole. Many of the parts required for a whisker pole are the same as that for a spinnaker pole and some of the functions of a spinnaker pole can be accomplished with a whisker pole. The downside to an A-sym is that in order to jibe you have to either pull the clew in between the headstay and the spinnaker luff or on the outside of the spinnaker luff. Either way this maneuver can be tricky and is a good way to earn yourself a spinnaker wrap on the headstay. I've also found that typically the deepest I can steadily fly my a-sym is 150°. If I pole out my 145 headsail I can accomplish nearly the same performance at the same point of sail. True downwind sailing is best achieved with a true symmetrical spinnaker, but the tough question is, "Just because you can point deeper downwind, are you making a faster VMG or CS?" Do you have enough crew and hands to successfully handle a symmetrical spinnaker, or any spinnaker for that matter?
Having a pole of an type is nice if you decide to lift things on/off the foredeck such as a dingy. Either a whisker pole or spinnaker pole will require a track and ring on the mast to hold one end of the pole, a rope to lift/hold the pole horizontal (topping lift), a rope to prevent the sail from flying up (a downhaul). I installed a Furlex Furler years ago and simply cannot rave loudly enough about the quality and engineering which I experienced. Consider the mast exit sheave for your topping lift. http://www.seldenmast.com/index.php?id=4691 Page 25, sheave boxes Since these sheave boxes will cause 1 or 2 more lines to run inside of the mast you'll need mast exits. Again, Selden has innovative solutions called slot fittings also found on page 25. Any type of spinnaker should be hauled higher and hopefully forward of the headsail. Assuming that you already have a second sheave at the top of the mast, a typical furler setup will prevent the headsail from reaching the sheave boxes. Selden makes a crain for holding the spin halyard block forward of the headsail halyard which you might also find useful to prevent jams and snags on the swivel and headstay. Attaching the topping lift to the pole: If a spin-pole then there is a bridle which positions the topping life in the middle of the pole. This bridle is mirrored on the bottom for the downhaul. If it's a whisker pole then the topping lift is attached as near to the end of the largest section with a strap and mirrored on the bottom for the downhaul. In either case the topping lift sheave box should be installed high enough that you don't create too sharp of an angle to the pole. Basically as high as possible but avoid going lower than that which would create a 45° angle or less. You want to pull up more than aft. With a simple deck fitting or deck bridle you can even use the topping lift to fly tri-sails in stormy weather. With that in mind you might consider deck fitting placement before deciding on a final height for your topping lift sheave box. This deck fitting can be where you attach the downhaul. In my experience you'll simply have a turning block attached to the deck fitting and a turning block on the rail. With the pole all the way forward to the headstay your downhaul will run nearly vertical from its own attachment on the poll (bridle or end fitting, spinnaker or whisker pole respectively), down to the turning block, over to the rail, back to some cleat near the cockpit. Placement of the rail turning block is dependent on the clear passage to the final destination, which means that you could place the second turning block inboard of the rail or even on the cabin top if desired. Typically only hand tight is needed so winches and fancy jammers are unnecessary. You could of course run the downhaul, similar to a furling line, on stantion fairleads. As for black lines, they are used to show to race committee and other racers that your sails don't extend past the length and height for which the boat was handycapped - luff and foot length. Top of the mast and aft end of the boom. I've never noticed a black tape at the bottom of the mast. It seems redundant since the lowest point which you can place the mainsail tack is typically fixed at the boom attachment. Likewise for the boom - no black tape towards the mast, just the aft end. That being said, some boats have been designed with a sliding boom track which allows raising and lowering the boom on the mast. I suppose in this case you would need a lower tape on the mast. That lower tape would be at the lowest point where the tack could ever be. In your case I would measure 22 feet above the boom and then consider all of my previously stated points on sheave placement. The tapes are only used for racing which you stated you're not interested in, but if you are dead set on applying black tapes to the top of the mast and aft end of the boom then I would find the PHRF rated measurements for luff and foot. Measure each from the tack pin on the boom and then tape. It seems most people just use electrical tape but paint makes for a much cleaner and professional look. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Apr 28, 2017 7:41 AM, "Kevin Deluzio via CnC-List" <cnc-list@cnc-list.com> wrote: Hi All, This is my second season with my new to me 1980 30-1. I would like to rig it for a spinnaker this year. Not interested in racing with one, but I like the idea of using it for light winds downwind sailing. So I have to install a block for the pole lift and I’m wondering where to install it. In the C&C manual it shows the pole lift at 22’-0” above the ‘black line’ at base of mast. But I don’t have a black line on my mast, not at the base (which I assume is around the height of boom?) nor at the top of my mast. Does anyone know where I would locate these black lines? or the height of the topping lift from some other reference point? My second question is where to mount the pole downhaul (foreguy) - a? Thanks for this. By the way, love the list, such a great source of information. And here’s to all the other C&C owners out there who’s arms are a sore as mine this time of year as we get these boats ready for launch. Kevin Deluzio S/V Solevento C&C30-1 #641 Kingston, ON _______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
