Alan, Dennis, Martin, I appreciate the replies. We have also repaired "smiles" - small grins at least - at the rear of the keel seasonally with ever increasing structure over the last few years, hence my reticence to crank on rather than the rod force. We had short waves ~3' plus out of alignment with the waves, so not an easy state, but I was not impressed by our pointing compared to other boats where we are normally reasonable comparable. We had max baby stay on to flatten the main, which we ended up reefing (plus a 110% jib), so maybe that wasn't the best move.
My experimentation for this weekend will be to stand the mast up a little more (take rake out at the step) and shorten the forestay a little then try again. The current setup works very well in 12-15 true, but I have not yet worked out waves and wind. Thanks, Tim On Thu, Jun 12, 2014 at 8:52 PM, Dennis C. via CnC-List < cnc-list@cnc-list.com> wrote: > Guess I'm wondering what the wave state was. If you had 2+ foot seas, you > may want a bit of sag for power. If the seas were flat then I could see a > fairly straight forestay but not at the risk of damaging the boat. > > I rarely use more than 1100 lbs on my Navtec. I've seen a "smile" at the > aft end of the keel on haul out and suspect excess backstay tension as the > culprit. > > I've found my 35-1 likes a bit of sag even in heavy air. Seems to open > the slot ever so slightly and allow the boat to "breathe". > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > > > On Thu, Jun 12, 2014 at 6:54 PM, Alan Bergen via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Tim: >> >> It's important to know the force being applied, not the pressure. Force >> is equal to pressure multiplied by the area of the hydraulic cylinder, and >> all cylinders are not the same. There's a Navtec manual on the photoalbum >> web site. Find out which hydraulic cylinder you have, and look up the >> cylinder's area in the Navtec manual. The C&C 35 uses #10 rod, with a >> breaking strength of 10,300 lbs. Recommended preload limit is 25% - 33% of >> breaking strength, or 2600 - 3,400 lbs. Absolute preload limit is 40% of >> breaking strength or 4,100 lbs. You can use these numbers to figure out >> the recommended and maximum pressures based on your cylinder size. You can >> also order a free, force ring label from Navtec to apply to your hydraulic >> gauge. Remember to specify cylinder size when ordering the Force ring >> label. >> >> Alan Bergen >> 35 Mk III Thirsty >> Rose City YC >> Portland, OR >> >> Hi all 35-3 racers (and others with hydraulics), how much do you tension >> your backstay to get an acceptably straight forestay in 20-25kts? We were >> racing in that last night and our forestay was way looser than I wanted >> with the backstay at 2000psi (2 on the hydraulic panel). I have never gone >> above this before (1.8 seemed to be plenty for most conditions last year), >> but wondered what others maxed out at. >> >> I think the backstay is -10 rod with associated cylinder and we have a >> navtec panel that manages both backstay and vang. >> >> Thanks, >> >> Tim >> Mojito >> C&C 35-3 >> Branford, CT >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> >> Email address: >> CnC-List@cnc-list.com >> To change your list preferences, including unsubscribing -- go bottom of >> page at: >> http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com >> >> >> > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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