As I stated previously, most people start with tightening/checking the torque. So yes the sequence should be - torque bolts, Sail for a year, check for smile, if needed dig out a channel for the G-Flex and fill, Sail for a year, then check for smile, if that still wasn't enough, take more invasive remediation such as grinning a wide swath for an fiberglass "bandage" that wraps around the keel, Sail for a year, check for a smile, if that still wasn't enough then make plans to remove the keel and re-bed and take additional remedial steps depending on the findings. The way I see it, you just bought a used car and on the second day of ownership decided that the engine needed completely rebuilt.
Sikaflex is a one part polyurethane sealant that is typically used to hold windshields in cars. Some owners have had very good results using it to replace the polycarbonate windows in their boats and hatches. I've never heard of anyone using Sikaflex for a keel joint or any other underwater sealant need. Despite having flex in the name, G-Flex is completely different. It is a 1:1, 2 part epoxy, that comes in 2 separate containers and that tends to be tougher and less brittle than regular fiberglass layup epoxy. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sat, May 4, 2019, 12:04 PM Shawn Wright via CnC-List < cnc-list@cnc-list.com> wrote: > Thanks for the info. The fellow I spoke with owns a Landfall 42, and > suggested for the small amount I will need, they should have some at the > club that I can use, rather than buying a whole tin. I will see if it is > G-Flex that they have. > > Although I will need to haul again next year for a new survey, I'd prefer > to do this job right this time, and not have to dig into it again. I'm also > planning to check the keel bolt torque. Should I do this before applying > epoxy? The joint seems very tight, with no sign of a smile - just a bit of > lead corrosion at the leading edge. I suppose I could take some of the > weight off the keel with the stands to see if it opens up, but I doubt it > will based on the tight sealant I pulled out. > > On Fri, May 3, 2019 at 8:20 PM Josh Muckley via CnC-List < > cnc-list@cnc-list.com> wrote: > >> I have not heard of anyone using Sikaflex. I would recommend G-Flex and >> follow the prescription in the link below. >> >> >> https://drive.google.com/file/d/0B8pEh5lnvP1yV1JEN3YxQk1RbHc/view?usp=drivesdk >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> Solomons, MD >> >> On Thu, May 2, 2019, 10:59 PM Shawn Wright via CnC-List < >> cnc-list@cnc-list.com> wrote: >> >>> Hello all, >>> >>> I spent the day wet-sanding the bottom of Callisto and she is nearly >>> ready for a coat of paint. I also cut out the old keel joint rubbery >>> sealant, in preparation for some Sikaflex 291. I plan to scrub the gap a >>> bit more and clean with lacquer thinner before letting dry. >>> >>> All the through hulls look good, bronze with marelon valves. >>> >>> I have two depth transducers, one for a Standard Horizon DS30, and the >>> other for a Garmin 140 Fishfinder, both working. There is a plug for the >>> old B&G speed sensor, but I was pleased to find another newer speed sensor >>> in good shape, it appears to be a Garmin like this: >>> >>> http://www.airmar.com/productdescription.html?id=103 >>> >>> The specs show either a NMEA 2000 or analog cable, but I haven't traced >>> it yet to determine which one I have. Of course, the B&G H1000 system I >>> have only does NMEA 0183, so I will need a signal converter, I think. I'm >>> hesitant to spend any money on the old B&G system until I verify the pieces >>> I have actually work though. >>> >>> Also, the plug for the old B&G sensor is very thin plastic, about 2mm >>> thick. I'm thinking of filling the hollow plug with epoxy so it doesn't >>> sink the boat if it ever cracks. Or maybe just find a better one? It's 1 >>> 3/4" diameter. >>> >>> -- >>> Shawn Wright >>> shawngwri...@gmail.com >>> _______________________________________________ >>> >>> 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 >> >> > > -- > Shawn Wright > shawngwri...@gmail.com > _______________________________________________ > > 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
