Express 27 National Championship at San Francisco Yacht ClubOctober 5 - 7
Result
PosBoatTotalRace 1Race 2Race 3Race 4Race 5Race 6Race 7
1Magic Bus283(3)5(8)6(14)2(16)1(17)1(18)10 (28)
2Motorcycle Irene292(2)2(4)14(18)1(19)7(26)2(28)1 (29)
3Get Happy!!344(4)3(7)11(18)5(23)3(26)6(32)2 (34)
4Thumper3711(11)1(12)2(14)9(23)4(27)5(32)5 (37)
5Fired Up!421(1)4(5)8(13)8(21)5(26)10(36)6 (42)
6Current Affair5112(12)6(18)10(28)3(31)13(44)4(48)3 (51)
7Tequila Mockingbird625(5)7(12)17(29)4(33)2(35)14(49)13 (62)
8Andale627(7)10(17)3(20)12(32)11(43)7(50)12 (62)
9Abigail Morgan6413(13)13(26)1(27)6(33)9(42)11(53)11 (64)
10Wile E Coyote686(6)9(15)7(22)OCS(40)RET(58)3(61)7 (68)
11Salty Hotel719(9)8(17)4(21)11(32)10(42)12(54)17 (71)
12X-Wing7610(10)14(24)13(37)14(51)8(59)9(68)8 (76)
13Bombora8316(16)15(31)15(46)10(56)15(71)8(79)4 (83)
14Peaches8714(14)12(26)16(42)7(49)6(55)17(72)15 (87)
15Take Five908(8)11(19)9(28)16(44)16(60)16(76)14 (90)
16Artemis9417(17)16(33)5(38)13(51)14(65)13(78)16 (94)
17Hang 209515(15)17(32)12(44)15(59)12(71)15(86)9 (95)
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Author: Ted Lohr
Subject: Cracks in deck at chainplates
Info: (11355 views) Posted: Friday 7-6-12 10:04:44 AM
I ran into the same problem a year ago with the water intruding from the track where we sail the #3. A careful inspection manifested itself into a 14"x20" section of bad core. It spanned the chainplate, track, and bulkhead. If you are looking at a re-core of that area - consider using Penske Board ( Airex PXC ). It's a high density foam that will not absorb water.

Also rebedding the track bolts - oversized hole, epoxy, redrill process is also a good rule to follow as well. Not fool-proof, but works well.

Good luck. It's an easier job than it looks. Just a bit tedius and messy.

:: Unfortunately, this will need attention, as most likely
:: there is some delamination of the deck at the
:: chainplate.
::
:: Chainplates are very prone to leaking where they go
:: through the deck. Even after careful rebedding they can
:: leak again relatevely soon due to the movement of the
:: chainplate when sailing. Even if the water isn't making
:: it into the interior of the boat, it can be making it
:: into the balsa core. Unfortunately, this tends to rot
:: the balsa deck core around the chainplates--particularly
:: in fresh water environments. It is even worse in
:: climates that freeze, as the fresh water freeze/thaw
:: cycle breaks down balsa and invites rot.
::
:: A crack extending from the chainplate is likely caused
:: because the balsa core has degraded in the area from
:: years of leaking. Take a something hard (like the hard
:: plastic handle of a screwdriver) and tap all around the
:: chainplate on deck. If you get a hard knock, the core is
:: good. If you get a soft mushy knock then there is
:: delamination and/or rotten core. You may be able to
:: determine the rough extent of damage this way.
::
:: The correct fix is to cut out the rotten core and
:: replace, then reglass the deck. Generally this is done
:: from above because the main bulkhead intersects the deck
:: by the chainplates making repairs from below very
:: difficult. This is not a trivial repair to do well and
:: best left to someone with experience. That said, it is
:: not catastrophic either and can be effectively repaired
:: without major surgery.
::
:: If you don't yet have delamination in this area, it is
:: worth preventing it by removing the chainplate, augering
:: out the balsa around the slot, and filling it with epoxy
:: to make a waterproof seal against further intrusion.
::
:: I just resealed my chainplates a couple weeks ago, as
:: they were leaking despite careful sealing about 5-7
:: years ago. Expect that sealing the chainplates is
:: something that needs to be done somewhat regularly.
::
:: Feel free to email me directly with further questions.

:: --brendan
::
::
::
::
::
:: :: Today I noticed a 4" crack in the deck extending from
:: :: the chainplate on the starboard side to a nearby
:: :: fitting. Is this something to keep an eye on or a more
:: :: serious matter? Does anyone have a recommendation for
:: :: someone to take at look at the problem?
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