If I exceed 2000 psi on Touche's backstay, the hull flex will result in separation of the aft 6-8 inches of the keel from the hull. It's only cosmetic but I will have to re-fair it at the next haul out.
-- Dennis C. Touche' 35-1 #83 Mandeville, LA On Fri, Jun 12, 2020 at 12:45 PM Bailey White via CnC-List < cnc-list@cnc-list.com> wrote: > > > 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 > > > > _______________________________________________ > > 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://www.paypal.me/stumurray > >
_______________________________________________ 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://www.paypal.me/stumurray
