Karl, First, go here: http://www.cncphotoalbum.com/doityourself/masttuning/tuning.htm
Assuming your Mk1 has double lower shrouds, here are the "super secret" Loos numbers as % of breaking strength I use on my 35 Mk1. Uppers 21% Fwd lowers 14% Aft lowers 5.5% I give you % breaking strength because your wire diameter might be different. These numbers will induce an amount pre-bend in your mast. As stated in the linked tuning guide, final tuning should occur on the water under load. -- Dennis C. Touche' 35-1 #83 Mandeville, LA On Sat, Oct 15, 2022 at 5:04 PM Karl Kuzis via CnC-List < cnc-list@cnc-list.com> wrote: > Hello all, > > We are new owners of Hull#45 "Firefly" and I am interested in hearing if > any one has a set of starting rig tension measurements you could share. > > Loos Gauge numbers would be great. > > Just replaced the headstay due to wire damage I found under the foil. > (Wanted to avoid burying bad wire under the new roller furling). Now > working on retuning the rig. > > All insight and experience sharing welcome! > > Respectfully, Karl > >
