Coronado 15 project.

Post photos and descriptions of your ongoing projects here. No project is too big or too small.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Moving along with the foil projects (rudder and centerboard.)

Welcome to my "shop." That bar is my work bench.
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I opened a 36" sanding belt, and paired it with a 1" square steel tube. It's been great for fairing.
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"Arrow straight."
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Can you see where the low spot is? (Or the two high spots.)
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TampaBay
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Boat Type: Coronado 15

Re: Coronado 15 project.

Post by TampaBay »

The foils are better. The final fairing was done with neat epoxy (tinted white.) I'll fair once more, and then apply finish coats of white epoxy.

Centerboard. The low spots are circled.
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Rudder.
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Last edited by TampaBay on Sun Dec 14, 2014 12:40 pm, edited 1 time in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The storage area/office is a great place to cure epoxy. It's not attached to the main house and it stays very warm all day and night. I think these foils are almost done. I might add another coat of pigmented epoxy, but I'm starting to use epoxy like it's paint. So,,,,, it's time to go shopping for some paint.

A 75 watt bulb adds extra heat to this large cabinet.
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TampaBay
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Boat Type: Coronado 15

Re: Coronado 15 project.

Post by TampaBay »

It's tough to get good pictures of bright, white, glossy objects. These foils are done for now. I'm looking forward to sail testing them.
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There's no way these foils are perfect, but their sooooo much better than the factory originals. If I decide to start rebuilding them (one more time,) I'll start with more precise templates. This one is graph paper epoxied onto 1/4" plywood.
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Last edited by TampaBay on Wed Jan 28, 2015 12:08 pm, edited 1 time in total.
CapnK
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Re: Coronado 15 project.

Post by CapnK »

You can see in that last shot, in the reflections on the foil, how nice it came out. Great job!
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TampaBay
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Boat Type: Coronado 15

Re: Coronado 15 project.

Post by TampaBay »

Thanks CapnK. I have to wonder how this boat will sail will nice foils. I still have to fit some "shoes" into the top and bottom of the centerboard trunk, in order to hold the leading edge and trailing edge securely in place.

Here is a look at the original shape of the board, when compared to the template (before template fairing.) There is at least a 1/4 inch gap, and in some places, more. One side was completely flat (concave in spots,) and the other side was only slightly better. Same deal with the rudder.

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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The boat: Waiting in the wings, as a truck project takes center stage. The air flow meter was tested with a multimeter. It has 12v in and a good ground. If the computer determines that the output voltages are not within range, it ignores the air flow meter and will control the engine with information from the throttle position sensor (not good.)
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Last edited by TampaBay on Sun Jan 18, 2015 8:18 pm, edited 1 time in total.
TampaBay
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Boat Type: Coronado 15

Re: Coronado 15 project.

Post by TampaBay »

Oops, looks like a small fire in the computer. I think, this could be the problem.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Fitting the new centerboard: From the cockpit, the board won't fit into the trunk. The maximum width of the board is 1 and 1/8th", the top lip of the slot is about 1 and 1/16th". I'll feed it through the bottom for now. I'm waiting for a small epoxy patch at the forward end of the slot, to cure (just under the top work lamp.) There was a small crack.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The word from the fleet is, the board should be at 90 degrees in the full down position. This is 16 degrees of aft sweep.

A bag from Target and some bungee cords are holding the board steady.

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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Somehow, the foil project turned into a bottom job. I chose Rust-Oleum Topside.
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The hull was fared with epoxy a couple years ago. It was faster, but there was room for improvement. I sanded the epoxy down to bare hull with 60 grit, then applied the Rust-Oleum primer. The primer went on to thick (live and learn,) 90 percent was sanded off with 120 grit paper.
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The first coat of gray went down with a 4" foam roller. The paint was thinned to 7% mineral spirits. It lays down very flat; no "roll and tip," just "roll and roll."
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After about 5 hours, the first coat was hard enough to sand with 320 grit (and it sands nicely.) Then the second coat was applied.
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Later today, I'll sand again with 320 grit and add the third coat. The foam roller does not add a thick layer of paint, so a fourth coat might be needed. After the final application, I'll start wet sanding with 400 grit paper.
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Last edited by TampaBay on Tue Feb 10, 2015 10:20 am, edited 5 times in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The 3rd coat provided decent final coverage, and there's a small amount of paint remaining for touch up projects.
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The paint cured slowly overnight (cool temps.) Today I added a blanket and placed two 500 watt halogens under the hull. Let it warm up for a day.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

I didn't realize how much square leading edge showed below the water line (not fast.) This was rounded off with a belt sander.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The centerboard was set with 3 degrees of rake. To stop the side play of the board, I have to add 1mm shims to each side of trunk slot (somehow.)
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pjesus
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Re: Coronado 15 project.

Post by pjesus »

Love your work, TampaBay.
But love your shop even better! :)
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Thanks pjesus. This time of year is nice because we get a short break from the humidity.

Anyone have experience with this tape? I'm considering it to shim the centerboard in the slot but I don't know if the adhesive is waterproof. It's "Jap tape."


http://www.dieballsailing.com/japanese-glide-tape/
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Marking out the bracket's territory. The other spaces need to be built up.
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Way to much yard work. The old bamboo canes are removed and slowly make their way to the curb for pick up day.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

To center the board in the slot, I hung a plumb-bob from the trailing edge (mid span.)
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With shims, the board was centered in the slot.
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After the board was in position, plastic bags were place into the gaps and then filled with liquid epoxy. When the epoxy sets, it will form permanent shims or "shoes."
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There are two shoes at the leading edge, and one shoe at the trailing edge (it wraps around to make a U shape.) I plan to sand away the excess and then reattach with more epoxy.
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Last edited by TampaBay on Mon Apr 20, 2015 3:20 pm, edited 1 time in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The rough edges of the epoxy shoes were sanded away. They were then fixed into position. One pair at the leading edge and one pair at the trailing edge.
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With the left over epoxy I did some repairs on this chair.
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Could someone get J.R. on the phone please.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The shoes are slightly wide. Rock the board forward and strike a mark, rock it back and strike another mark.
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X marks the spot (where you sand.) Remove the mark then check the fit (repeat.)
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And then it happened "foooonk," the board dropped into place. A good fit.
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pjesus
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Re: Coronado 15 project.

Post by pjesus »

The paint job looks awesome.

Nice trick to get those shoes done. I don't think I would have thought of doing that :)
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Thanks pjesus. The boat is off the horses and back on the trailer. It's a big milestone because now, I can park my car in the garage. The area of the centerboard trunk that takes the lateral forces of the board was reinforced with epoxy and 3/8ths inch Okume plywood. I also added 4 layers of 10 ounce fiberglass along the center of the hull.
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Last edited by TampaBay on Sun Apr 05, 2015 12:40 pm, edited 3 times in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Laminated and installed a new compression post. This was a Father and Son project.
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Six layers of 3/8ths inch Okume. Added stringers and new fiberglass. The dimensions of that forward bulkhead are being reduced (I'm cutting large sections out.) It was overbuilt.
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Last edited by TampaBay on Mon Apr 20, 2015 3:23 pm, edited 2 times in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Distribute the compression.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Reinforcing the corners. Lots of small pieces to cut out.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The compression post install is completed. It's tied into the new stringers and the cockpit. This is now a much stiffer hull.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

And the panels that were cut from the cockpit are glued back into position. This feels really good.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

The rebuilt centerboard has more lift. Because the foil is thicker, the slot had to be widened with a jig saw.
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From each edge I removed about the width of two saw blades. After a little finish work with a sanding block the board dropped into place.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

After a few long projects the hardware is getting reinstalled.
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I'm fairly sure this is West Marine's version of 4200. I hope so :) I'll confirm that with a google search now.
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earlylight
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Re: Coronado 15 project.

Post by earlylight »

polyurathaneAccording to the manager of a local West Marine store, that sealant you used is basically the same as 3M5200
(a very tenacious Polyurethane Adhesive/Sealant)
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earlylight
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Re: Coronado 15 project.

Post by earlylight »

According to the manager of a local West Marine store, that sealant you used is
basically the same as 3M5200 (a very tenacious Polyurethane Adhesive/Sealant)
Dick Coerse
Early Light
Sabre 34 MK1
Solomons MD

http://earlylight160.net76.net
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

This is West Marine Model 14010425. Here is a description of the product copied from the West Marine web site.

"A good choice for bedding, bonding and sealing deck hardware and thru-hull fittings above and below the waterline where the need for future removal may arise."

Here is the link. A 5200 like adhesive would never be described "...where future removal may arise."
http://www.westmarine.com/buy/west-mari ... --14010425
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earlylight
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Re: Coronado 15 project.

Post by earlylight »

I guess that is just one more reason I try not to shop at West.

1. limited stock (who in their right mind would stock ONE hinge of a certain type?)

2. High prices

3. Untrained personnel giving out false product information
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

I threw a small carpet over two saw horses, uncoiled the garden hose and wet sanded the rudder and centerboard up to 1000 grit.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

All the hardware is reinstalled. All the control lines are back in place. There have been some serious changes over the winter. Rebuilt foils, changes to the hull's super structure and a new bottom. I am very excited to get out for a test sail.

The weather in Sarasota right now is warm and overcast. The wind is light and there's a big boat show in town (the boat launch is packed.)

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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

I took the boat out on Monday. It was very fast and it performs great. Now it 's time to sell,,,, looking for a bigger boat.

See the listing here.
http://sarasota.craigslist.org/boa/5003789451.html
Last edited by TampaBay on Sun May 03, 2015 11:41 am, edited 1 time in total.
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Image
TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

I thought that a couple "before and after" pictures would be fun. This is bellow the cockpit, port side looking aft from just alongside the mast compression post.

At left is the centerboard trunk. That loose lumber was a backing strip for the centerboard gasket screws. I found 3 pieces rolling around completely unattached, 2 pieces popped free after a light knock, and the aft two are still in place (one port and one starboard.)

Along the bottom is a glassed over foam stringer. It was terribly resin starved. I added lots of new resin and glass here.

Along the right is a stringer that runs from the mast step to the transom. It's attached only at the outboard side of the top joint (best as I can tell.) It didn't look to be attached along the bottom joint. I epoxied this stringer into the hull with a wet out, fillets, and glass. Those crazy fiberglass "ears" were cut off flush with the stringer. My guess is they were used to hold the flotation up and off the bottom (a long block of Styrofoam)

At top is the cockpit sole. The screw holes were over drilled (the ends of the screws are visible,) filled with epoxy and re-drilled. Backing plates were added to the aft most cluster of screws (they are the 8 screws attaching the barney post.) I also added glass and epoxy to the flat surface.


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I glassed in these stringers. Each one is WRC and about 5 feet long. The original keel strip was removed because it was waterlogged and moldy. It was replaced with 4 layers of 10 ounce cloth (7 layers under the new mast step.) The extra tabbing over the stringers is to distribute the compression of the new frames and corner stiffeners.
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This is the same space, after reconstruction. I framed everything with epoxy saturated Okume.

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The new compression post assembled.
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Installation started.
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Installation completed. Does this look sturdy enough?
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Here is that compression post from the front.The front triangles are notched into the stringers.The epoxy is Six10, it looks messy because it is. This is a very tight space and so perfect looking fillets are just not happening.
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TampaBay
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Re: Coronado 15 project.

Post by TampaBay »

Replacing a signal lamp on the trailer (again.) This time I sanded and repainted the bracket and bought new stainless hardware. This stuff was a mess to disassemble so now, it's anti-seize everywhere.
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Installed.
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I disassembled the barney post and sanded off the old paint. It was painted a couple years ago but, it's time for an upgrade. The bolts were soaked in wd40 overnight.
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