Bruno, Have you considered a cascade system? I was racing on a friends boat earlier this year and he was going to pull out because his backstay was still at Navtec being re-built... We rigged up a cascade system using existing parts / line I had on Mojito; varying sizes of Amsteel, high load guy blocks and a vang I'd put together while my vang was being rebuilt by Navtec (there's a theme here somewhere). It worked out at 24:1 (2:1 x 2:1 x 6:1), which would get you 2400 lbs tension with a 100lb pull. Below is a link to a 24:1 version and a Beneteau 36.7 I sailed on had a 48:1 like the Harken. With only a single attachment point there is a risk of tangles versus the multiple chain plates, but Amsteel is slippery stuff, so as long as you get the block reeving right it should be OK.
http://www.ericsonyachts.org/infoexchange/showthread.php?11645-Hydraulic-to-Cascading-Backstay-Upgrade http://www.harken.com/DeckLayout.aspx?id=14795 Tim Mojito C&C 35-3 Branford, CT On Wed, Oct 8, 2014 at 5:14 PM, Bruno Lachance via CnC-List < [email protected]> wrote: > The 33 is not split backstay, maybe some late models have them but not > mine. > > I can not beleive there is not a better reliable system on the market. > anybody with direct experience of the Wichard mechanical wiht ratchet ? i > don't even know if the handle pumps up and down or rotates with some > sort of relief system hence the ratchet ??? same question about power, but > the numbers indicate it would be more than appropriate for my boat. > > I'm worried to dump more money into hydrolic and be a the same point in a > year or two. Worse case scenario i lost the rig, i had to jury something > this summer offshore in 25 knots plus when the thing blew on my transom. > not fun at all. i bought a spare turnbucle after that one and went on with > my vacations. > > thanks for inputs > > Bruno Lachance > C&C 33 mkII > Becassine > > ------------------------------ > Date: Wed, 8 Oct 2014 16:45:20 -0400 > To: [email protected]; [email protected] > Subject: Re: Stus-List Backstay aduster > From: [email protected] > > > My 2 cents: > I don't think the 33 is a split backstay. The cost to split it and > install new chain plates would probably exceed the cost of a hydraulic > unit. > With a masthead rig I would want more power than you can get with a manual > adjuster. > > > Joel > 35/3 > Annapolis > > On Wed, Oct 8, 2014 at 4:33 PM, Kevin Driscoll via CnC-List < > [email protected]> wrote: > > I second the split back with tackle/cam cleat apparatus suggestion. I race > a bit with it and Find it straight forward and quick adjusting. Pretty > direct feedback on rig tension. > > KD > > > On October 8, 2014, at 1:13PM, John Pennie via CnC-List wrote: > > For a 33 you may want to consider one of the fittings that ride on a > split backstay from Johnson. Not nearly as eloquent but effective and > probably the best value. > > John > > On Oct 8, 2014, at 4:06 PM, Jack Fitzgerald via CnC-List < > [email protected]> wrote: > > If you race your boat you will find the mechanical back stay adjuster to > be a complete PITA. > > I have a stainless steel Barient back stay adjuster (5/8" pins and uses a > winch handle to adjust) that came with my boat back in 1975 to be used in > case the original Meriman hydraulic adjusters failed. It did indeed fail > and we rigged the Barient and it took all that one could do to crank in > enough tension just to straighten the mast > > Jack Fitzgerald > HONEY > C&C 39 TM > > > > > On Wed, Oct 8, 2014 at 3:12 PM, Bruno Lachance via CnC-List < > [email protected]> wrote: > > Hi all, > > I sent my navtec backstay for a rebuild at Southshore and it seems the > over 25 years thing is dammaged (scratch on pump cylinder, not fixable, it > still leaks). I'm looking at options and the two on the list are: replace > it by the exact same thing (Navtec) or screw hydrolic and go with the > mechanical option. Would be a Wichard product, the one with a ratchet or > handle with no ratchet, not the wheel. > > any opinions on that decision would be appreciated regarding reliability > and performance (i like to play with that toy!) would a mechanical be too > slow to adjust? > > Thanks > > Bruno Lachance > C&C 33 mkII > Becassine > > > > > ------------------------------ > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > > > > -- > Joel > 301 541 8551 > > _______________________________________________ This List is provided by > the C&C Photo Album Email address: [email protected] To change your > list preferences, including unsubscribing -- go bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > [email protected] > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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