A couple of seasons ago North Sails sponsored a tuning clinic for C&C 115s in our area. We had three C&C115s out and did speed training of the three against each other with Andreas Josenhans and Sandy MacMillan of North Sails running the clinic. There were other experts also on hand on the boats to lend some assistance. During this exercise the North whaler would trail each of the boats for a while shooting pictures and radioing adjustment suggestions. After the first day on the water there followed an indoor presentation based on the day’s observations.
One of the comments that came out from Andreas is that the sails were not full hoist and that as a result we were giving up some performance. He was pointing at the top band on the mast and the headboard of the sail. My take away from this is to make sure your sail is full hoist and do all initial tensioning before the sail is under load with the halyard. Was an interesting weekend. One of the three 115s that took part has been sold and has moved away, a second is now for sale and the third raced very little last year Mike From: CnC-List [mailto:[email protected]] On Behalf Of Gary Zuehlke via CnC-List Sent: Monday, January 26, 2015 1:09 PM To: Jean-Francois J Rivard; C&C email list Subject: Re: Stus-List Cunningham I was told much the same. Tension cunningham and flattenig reef upwind, when roundind to bead down just release both and halyard anx outhaul tension are set for downwind. Was also told that the halyard tensions the luff (bolt rope) and the cunningham actually stretches the material of the sail itself. Gary Z C&C 39 Harrison Township, MI On Jan 26, 2015 11:17 AM, "Jean-Francois J Rivard via CnC-List" <[email protected]<mailto:[email protected]>> wrote: Thanks for posing the question. Like most of you guys, I have a Cunningham cringle (And use it). However, I never quite got a clear Halyard vs Cunningham answer until I did a little more research this am. 1st reasonable rationale: Use the halyard to control the top half / use the Cunningham for the bottom.. (That's the one I was thinking of initially) Stands to reason as especially for quick updates the friction in the slides can prevent the tension from being uniform and therefore you get a more consistent sail throughout by using both. Come to think of it, a well lubed track / modern graphite impregnated slugs make this kind of moot.. The clever one I just read supposedly came from an experienced sail maker / racer: (Assuming a well lubed track) Set the halyard tension correctly for the downwind leg (Loose cunningham) and crank the cunningham for the ideal draft position on the upwind legs. After rounding the weather mark or tack to downwind let the cunningham loose to get your pre-adjusted downwind tension / focus on other stuff. Brilliant.. I'll remember that one. -Francois 1990 34+ "Take Five" Lake Lanier, Ga _______________________________________________ Email address: [email protected]<mailto:[email protected]> To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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