Since there is approximately 6 ft of the mast below the partners wouldn't moving the foot of the mast one inch forward result in a 7 inch aft movement of the masthead I would think you could move the foot one inch without lengthening the forestay
Jonathan Indigo On Sep 7, 2012, at 21:29, "Dennis C." <capt...@yahoo.com> wrote: > Dwight, > > "I" is the deck to masthead measurement, i.e. the vertical side of the > triangle. The forestay is the hypotenuse. > > I'm trying to return the rig configuration to where it was before the > adjustments I made. I did have 10 inches at the gooseneck. Now just 5. > Like I said, there's more to the story. > > Dennis C. > > > > From: dwight veinot <dwightvei...@hfx.eastlink.ca> > To: cnc-list@cnc-list.com > Sent: Friday, September 7, 2012 7:07 PM > Subject: Re: Stus-List Mast rake adjustment > > Sorry Dennis, on reading again now I see what you are doing…got confused when > you said the new hypotenuse was 46.487, compared to what it was at > 44…actually I don’t see why you need to change the forestay at all, the head > stay should have enough adjustment in it…does it not have a turnbuckle at the > bow that you could lengthen a bit > > And another besides, why are you doing it…seems from what I have read Touche > has consistently been at or near the top…trying for better performance or > less weather helm > > Dwight Veinot > C&C 35 MKII, Alianna > Head of St. Margaret's Bay, NS > From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On > Behalf Of dwight veinot > Sent: September 7, 2012 7:57 PM > To: ' Dennis C. '; cnc-list@cnc-list.com > Subject: Re: Stus-List Mast rake adjustment > > Dennis > > I believe for your 35-1 I=44 is the hypotenuse…you need the perpendicular > measure along the mast from the deck to the masthead > > Dwight Veinot > C&C 35 MKII, Alianna > Head of St. Margaret's Bay, NS > From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On > Behalf Of Dennis C. > Sent: September 7, 2012 7:14 PM > To: Cn Clist > Subject: Stus-List Mast rake adjustment > > OK, check my math and thinking on this one. > > I want to increase the rake in Touche's mast. I made some changes in the rig > a few months ago which brought the masthead forward so the plumb from the > masthead is only about 6 inches aft of the gooseneck. It used to be 9-10 > inches to get 1 degree of rake. > > The foretriangle is close to a right triangle. I=44' and J = 14.5'. If I > add the 6 inches to J (for the plumb drop from the masthead), I get a right > triangle with sides of 44.0 and 15.0 and a hypotenuse of 46.487 (the > forestay). > > So, if I want to move the masthead aft another 6 inches, I end up with a > triangle of 44.0, 15.5 and 46.650. The difference in the lengths of the > hypotenuses (hypoteni?) is 0.163 or about 2 inches. By my thinking, I need a > new forestay about 2 inches longer than the existing one. > > There's more to the story than this, like it's really 5 inches each for the > plumb and rake increase and I'm removing an extra toggle from the top but the > math and method should be right. > > Am I right? > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > > > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2197 / Virus Database: 2437/5254 - Release Date: 09/07/12 > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2197 / Virus Database: 2437/5254 - Release Date: 09/07/12 > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
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