Stus-List Re: C 29 Mk1 tuning questions
I followed a tuning guide that I think I got from the C photo album site. I have rod rigging and a Loos gauge (used on Ebay). Make sure vang and backstay are loose. Set rake (about 12" from gooseneck) with forestay/furler, tune uppers, then mid then lowers. I have now gone to Scar pins (wrap pins) that I got on Ebay instead of cotter pins/rings for the turnbuckles. Makes adjusting much easier. I have a fishing scale that I use to measure side to side distance with the main halyard to measure centering of the top of the mast that works reasonably well. Lowers: 0.25" #10 rod 12% of breaking- 35-40 Loos Intermediates: #6 rod 0.198" 10% of breaking 15-20 Loos Uppers: 0.25" #10 rod, 10% breaking= 35-40 Loos There is slack in the leeward shrouds upwind. Dave S/V Aries 1990 C 34+ New London, CT > On Oct 15, 2022, at 6:03 PM, Karl Kuzis via CnC-List > 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 > > Karl & Doris Kuzis > C 29 Mk1 "Firefly"
Stus-List Re: C 29 Mk1 tuning questions
Doug, Just a note. I also race on a J-30 and the owner's Loos gauge scale had worn off. He talk to Loos and they had him send back the gauge so they calibrate then add a new scale. Don Kern /Fireball, /C 35 Mk2 Bristol, RI On 10/19/2022 8:55 PM, Doug Robinson via CnC-List wrote: YO; It has been our observation that the Loos gauge readings are relative and not specific, our gauge will not match yours. But if you use my gauge (or yours) and measure my rig you can use the same gauge to return to your boat and match settings. We could be wrong in this. One of those races where we interchange crew members, Chris Doyle from Skip Doyle's boat Rocking Chair was delegated to our boat...first thing he did was to loosen the rig and we did well. Wish we had kept those settings, I think we sail to tight. Doug Robinson s/v Nemesis On 10/15/22 18:03, Karl Kuzis via CnC-List 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 Karl & Doris Kuzis C 29 Mk1 "Firefly"
Stus-List Re: C 29 Mk1 tuning questions
YO; It has been our observation that the Loos gauge readings are relative and not specific, our gauge will not match yours. But if you use my gauge (or yours) and measure my rig you can use the same gauge to return to your boat and match settings. We could be wrong in this. One of those races where we interchange crew members, Chris Doyle from Skip Doyle's boat Rocking Chair was delegated to our boat...first thing he did was to loosen the rig and we did well. Wish we had kept those settings, I think we sail to tight. Doug Robinson s/v Nemesis On 10/15/22 18:03, Karl Kuzis via CnC-List 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 Karl & Doris Kuzis C 29 Mk1 "Firefly"
Stus-List Re: C 29 Mk1 tuning questions
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 > >
