Possibly different diameter standing rigging. On Fri, Jun 12, 2020 at 10:45 AM Bailey White via CnC-List < cnc-list@cnc-list.com> wrote:
> Happy Friday to everyone. I've enjoyed the discussions this week. > > 2000 psi on a hydraulic backstay for a large keelboat is not very much and > seems overly conservative to me, particularly with the large headsails that > many of our boats have. > > We used to routinely go to 4000 psi on a 33 foot Santa Cruz ULDB routinely > when I raced in San Francisco Bay. Bigger boats, much more. North Sails > recommends 4300 psi for a J/35 in 14 knots true as another example. > http://www.j35-fleet7.com/training/training_tuning_NorthSails_guide.pdf > <https://urldefense.com/v3/__http://www.j35-fleet7.com/training/training_tuning_NorthSails_guide.pdf__;!!LIr3w8kk_Xxm!8wG5zMtsYP-3yN4Yj3b-0L3NU7JIA_I28RwVXBknUfqOKTPNgA0dzX9mo5hkcZwE7ZQ$> > > I try to not push too hard on my 1979 C&C 36 but go to 2500 to get the > headstay closer to where I would expect it in heavy air cruising. I > suspect it would be just right at 4000 but I have not raced this boat in > anger enough to do that. > > best, > Bailey White > C&C 36 > Lake Lanier, GA > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- > https://urldefense.com/v3/__https://www.paypal.me/stumurray__;!!LIr3w8kk_Xxm!8wG5zMtsYP-3yN4Yj3b-0L3NU7JIA_I28RwVXBknUfqOKTPNgA0dzX9mo5hkdhoJ4CQ$ > >
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