Pete
Do you have any numbers you would be willing to share with us, like the numbers you found to give best VMG as a function backstay tension, apparent wind speed and apparent wind angle for you boat, which if I remember correctly is a C&C 37. I don't really use the numbers as much as sail shape and feel of the boat but I do like to pay attention to the numbers now that I have my instruments working properly. Calculated VMG (wind) is a useful number but for me secondary to paying attention to sail shape, boat speed, apparent wind angle and feel of the helm for good windward performance. thanks Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS _____ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Pete Shelquist Sent: November 24, 2012 8:46 PM To: cnc-list@cnc-list.com Subject: Stus-List Keel R&R and backstay tension Note I changed the subject line just for clarity. Ditto on the backstay tension. Due to new instruments with vmg and new crew watching trim, we had a chance to play with backstay tension a lot last summer. I now keep it much looser than I ever had with very good results. Not sure if it makes a difference with the keel joint, but it makes sense. FWIW I sailed on a NA40 once and they couldn't motor with backstay tension on due to the effect on the shaft. It sounded crazy to me at the time, but there's a lot of power in that little ram (ok wally, there's your opening) From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Dennis C. Sent: Saturday, November 24, 2012 11:09 AM To: Tim Goodyear; Cn Clist Subject: Re: Stus-List Keel R&R Yep. Back off a bit on your max setting. I did. No more cracks. But I also slapped a couple layers of biaxial tape over the area. I use a dinghy batten taped to the backstay. It's marked with strips of green, yellow, red and finally black tape to mark the tension. Lot easier to see than looking at the gauge. Gauge reading is really irrelavent to us. We adjust to the sailshape, look at the tape and then reset it to the tape on the next windward leg if the breeze is the same. I've also found the 35-1 likes to "breathe" so we don't use as much backstay tension as when I first started racing the boat. The 35-1 has a transverse rib of balsa in that area. Probably more for hard grounding reinforcement but a bit of strength nontheless. Dennis C. Touche' 35-1 #83 Mandeville, LA _____ From: Tim Goodyear <timg...@gmail.com> To: Dennis C. <capt...@yahoo.com>; "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Sent: Saturday, November 24, 2012 10:02 AM Subject: Re: Stus-List Keel R&R Good point. I do like a nice tight forestay... Upwind setting is between 1500 to max of 2000 kpsi, which I didn't think would be too much. Maybe a couple of longitudinal stringers in between the ribs in that area would help, or living with more sag / less pointing ability. Tim Mojito C&C 35-3 Branford, CT On Nov 24, 2012, at 10:43 AM, "Dennis C." <capt...@yahoo.com> wrote: Tim, Do you have a hydraulic backstay adjuster? Dennis C. Touche' 35-1 #83 Mandeville, LA _____ From: Tim Goodyear <timg...@gmail.com> To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com> Sent: Saturday, November 24, 2012 8:55 AM Subject: Re: Stus-List Keel R&R Thanks, Jake. I'll take a look under the anti fouling around the top of the keel stub this year. I've had two yards try to solve the crack at the back of the keel (the C&C frown?), but it is back this year with a little water weeping out. It's (now) all solid fiberglass in that area, so I don't know where the movement is starting. Tim On Nov 24, 2012, at 7:54 AM, "Jake Brodersen" <captain_j...@cox.net> wrote: Tim, We found a number of hairline cracks in the keel stub. They were spread out and not really concentrated in one area. The boat was originally commissioned in Maine. I suspect that it had a hard grounding at some point. I didn't notice any stress at the back of the keel, which is where you would expect to see major damage in a grounding. This past spring when I had the bottom paint soda blasted, we found some longitudinal cracks in the gelcoat and glass on the port and starboard side in the hull, less than a foot from the keel joint. One was over two feet long. They were grounded out and glassed in. It is all faired in nicely now. Jake From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Tim Goodyear Sent: Friday, November 23, 2012 5:26 PM To: cnc-list@cnc-list.com Cc: <cnc-list@cnc-list.com> Subject: Re: Stus-List Cutting my keel Jake, I know you've documented your project, but what did the cracks look like before you started? Mojito has a couple of short hairline cracks at the hull / stub joint on the port side, and at the very rear of the keel. Thanks, Tim _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com <http://www.cncphotoalbum.com/> CnC-List@cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com <http://www.cncphotoalbum.com/> CnC-List@cnc-list.com _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2629/5416 - Release Date: 11/24/12
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