Thanks Richard. Why is it that I might want to enlarge the pennant exit ?
Monica Malone PsyD
monicam@...
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-----Original Message-----
From: Richard F Shearley rshearley@... [T27Owners]
To: T27Owners
Sent: Sun, Dec 10, 2017 3:38 pm
Subject: Re: [T27Owners] Centerboard
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If you have to reglass the pivot tube you should be fine doing the work from above.. the pennant exit could be enlarged at the same time.
One project for Lola will be finding why the board was lost this year.
I¡¯m hoping to spend some time with her new owner figuring out what happened.
We need a board if anyone has one... plan B will be to make a new one that would have better NACA numbers as the original has poor hydrodynamic performance..?
Using extra stands directly under bulkheads should allow you to briefly support the boat off the keel. The hull is capable of supporting the weight... jacking up under the keel is also a option.?
Richard Shearley
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The fiberglass work does not concern me because I have a good friend who is a phenomenal fiberglass worker. He repaired the huge hole Sandy put in the boat & no amount of scrutiny reveals where that hole used to be. He is a perfectionist. However, working under that much weight, supported by jackstands, does concern me. The boat is on my property, so I would have to take it to a boatyard to have it lifted. I think the closest one that allows owners to work on their own boats is an hour away. I am assuming there will be glitches in this project & it would be easier to deal with them closer to home.
-----Original Message-----
From: calebjess@... [T27Owners] < T27Owners@...>
To: T27Owners < T27Owners@...>
Sent: Sun, Dec 10, 2017 1:19 pm
Subject: Re: [T27Owners] Centerboard
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Monica,
When a boat is supported by jack stands the bulk of the weight is supported by the keel, not the jack stands.? The jack stands merely keep the boat upright.? I have heard of people digging a trench under the keel to access the centerboard trunk while the boat is held up by jack stands, assuming your boat yard is not paved in concrete ;-)? One might also be able to put blocks under the keel while still allowing access to the centerboard trunk using jack stands to keep the boat in place.? In any case moving your boat off your trailer would be necessary to access the slot from below.
The safest way to access the centerboard trunk from the bottom is with a TravelLift or crane that can handle 4 tons of weight (our boats weigh around 7200 #s - a bit more than a Sunfish).? The lifting straps would have to be positioned to allow access to the centerboard slot.? I'd expect it might cost you somewhere around $500 to have your boat put in jack stands or have a crane or travel lift raise your boat for this job.
The hull shapes between the type 1 & type 2 T27's should be identical.? It is the deck and cabin that is different on the type 2.?
The thing that would most worry me about cutting the top off the centerboard slot, as you are contemplating, would be making the centerboard trunk air-tight again, since it is all below the water line.? A good fiberglass technician should be able to do this though.? If you proceed with this idea you would be able to easily inspect/replace the pivot pin as well as
inspect/repair the hole that the lifting pennant requires.
Good luck however you proceed.
My best,
Caleb Davison
T27 #328
NY
-----Original Message-----
From: Monica Malone monicam@... [T27Owners] < T27Owners@...>
To: T27Owners < T27Owners@...>
Sent: Sun, Dec 10, 2017 10:42 am
Subject: Re: [T27Owners] Centerboard
Thanks, Jack. you make it sound so easy. I need to put in a new pivot bushing, so suggestions are welcome on that. I'm still hung up on lifting the boat. The folks who have responded make it sound like you're discussing moving a Sunfish around. I'm thinking I have to get the boat off the trailer to get access to the centerboard slot. Are jackstands the way to do this ?
I am also wondering if there are differences between the original and the type 2 that are relevant to this discussion. Mine is a type 2.? I have to cut the inside fiberglass to get access to the pivot pin. So, since I have to do fiberglass repair anyway, I was thinking of cutting the whole top off the centerboard housing & dropping it in from the top.
-----Original Message-----
From: 'Jack T Grant' jack@... [T27Owners] < T27Owners@...>
To: T27Owners < T27Owners@...>
Sent: Sun, Dec 10, 2017 9:47 am
Subject: RE: [T27Owners] Centerboard
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Monica, I have just finished updating and ?reinstalling the centerboard on #345 which was damaged and out of the boat when I purchased it.
??????????????? My advice is to install from the bottom (outside) . I can't imagine what you would have to go through on an internal installation but it would certainly be far more involved than lifting the boat 12" to 14" or digging a pit a comparable amount.
w??????????? Secondly, if your centerboard is currently out of the boat, critically examine the pivot bushing for wear. Nor is the time and opportunity to upgrade a potential failure point. It also is an excellent time to examine how the pulley system works and attaches to the centerboard.
??????????????? Finally, remove the portion of the cabin floorboards and remove and inspect the centerboard pivot ?pin.
??????????????? Actual installation is relatively easy assuming you have adequate clearance, a couple of floor jacks and a strong friend. For we "first timers " it took about 45 minutes. I'm certain a boat yard could do it in a comparable amount of time at launching. However , it certainly is not a job a typical owner would find overwhelming, I would think the most critical element would be examining and updating the pivot bushing if required.
??????????????? ?Best regards, and good luck? Jack Grant
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Thanks, Caleb. I'm sure I'm going to need lots more advice once I get into this project.
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I have owned #328 for nearly 15 years now but have not had to do anything major with my centerboard other than scrape barnacles and paint it, so take this with a grain of salt.
I also keep my boat on a cradle in the off season so the centerboard trunk is usually at least partially blocked as it might be on a trailer (eg, no downward movement possible).?
I think you could replace the board from inside the cabin but you would have to remove most of the top of the centerboard trunk to do so (limited space for manouvering the board).? You might even have to jack you T27 up an inch or two off the trailer frame to get the board back in there from above.? I have never heard of anyone doing it this way so I do not recommend it, but I am sure it is possible.? Quite a few members here have replaced the centerboard from below and some would be glad to talk you through that operation (Marty Levenson has offered).
-----Original Message-----
From: Monica Malone monicam@... [T27Owners] <T27Owners@...>
To: T27Owners <T27Owners@...>
Sent: Sat, Dec 9, 2017 11:04 pm
Subject: Re: [T27Owners] Centreboard
Yes, sinking the boat was not part of the plan.
The boat is on a trailer. I don't know how to get it high enough to get the centerboard in from the bottom without taking it to a boatyard to use their lift. My thought was that doing the project on my property gives me more flexibility timewise to deal with the unexpected. I thought about digging a grease pit under the boat, but I'm sure the city would be there in a second demanding a building permit. Going in from the top would solve the access issue.
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I just did this last spring, but from the bottom. Hopefully you already know the boat has to be on the hard. I don¡¯t really see the advantage of doing it from the top.?
It wasn¡¯t that difficult to do, but had some good strong people below. It took a bit if wiggling around to get it aligned.?
In my case I needed new bushings for the pivot pin. Are you clear on all that, and how the pennant attaches? Not hard to do but a bit confusing until the penny drops.?
There was a bit of last minute adjustment as I had a bronze pin and custom machined bronze bushings ready to go. Unfortunately the glassed in (bronze?) fittings that the bushings were to sit in weren¡¯t quite aligned. Had to grind down two brass nipples to fit, but I know those won¡¯t last many years.?
Fire away with questions if you run into trouble: I had lots of help from this list, as well as on the phone from Tartan Marine.
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? sent by carrier pidgeon ?
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I have a beautifully refurbished centerboard ready to go in my boat. As I contemplate the difficult logistics of this, I'm wondering if anyone has installed one from the top ? I have a great fiberglassing resource, so sealing the trunk up again won't be a problem.
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