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>> Home > Boat Building Blogs > Constellation
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mdlbt.com/30390
Constellation Print Booklet
Author: Jerry Todd   Posts: 12   Photos: 257   Subscribers: 2   Views: 403   Responses: 10   |   Most recent posts shown first   (Show oldest first)

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mdlbt.com/30670
Just Keep Swimming - Posted: 27th Jun 2017
The maritime museum's event, scheduled for October instead of May, was cancelled as a hurricane blew up the coast and pushed water up the bay flooding a lot of coastal bay towns like St Michaels.

I couldn't make the next Port Expo in 2016, but I tried to be ready for the maritime museum in October.

I started making the forward bulwarks. The real ship had sections that folded down on bronze hinges a few of which still exist as she still had her forward bulwarks when she came to Baltimore.
They could also be removed. I mad all the section as a single piece and I don't intend to make them functional, just something to snag and need to be repaired.

As mentioned, the original winch drums warped and I made new ones with styrene drums instead of wood. These vanished around the time I moved and haven't been found yet, so I got some sheet plastic to take the place of the CDs and made a new pair. I have to say, I'm not happy with these at all. I did add a small block of Delrin to each winch to brace the drums against the pull of the braces/springs.
Constellation's board at her entry port were carved. I took a photo of an original at the ship and traced it in PaintShopPro. Scaled it to the model and printed it. I glued this to some bass wood. I have some mahogany I can slice some thing slabs off of, and I may try using a rotary tool to carve a set for real, but till then, these will do.
I tried to make the tops'l yard parrels which are iron hoops lined with wood. There's a pin for the yard's yoke to ride on, and the hoop can be opened and hinged to be removed. I wanted all that in case I need to remove a yard at some point without pulling down the whole rig.
I tried it with some sheet brass, and again, I wasn't too hgappy with the result. We'll come back to that.
So, I fiddled around with cutting combs to make hatch gratings, and actually managed to get something done, which led to making the main hatch cover.

I had cut a bit of plywood as a cover, just to keep dust from going below while I was working - I based my hatch cover on this piece, framed the bottom; installed ledged for it to sit on inside the hatch coaming, and made gratings and fake beams on top. It's a bit simplified buy what the ship actually had, but it gets the point across. A couple of smaller gratings also got installed giving the deck a more finished appearance.

I wasn't thrilled at bumping the bottom of a pool again, but the maritime museum is on the Miles River. I needed to be able to launch and retrieve the model at a boat-ramp or shore, so I started designing a launch-cart....

Attached Photos - Click To View Large


mdlbt.com/30624
Port Expo 2015 - Posted: 26th Jun 2017
Constellation and Pride got stuffed into the van, and off we went.
This year they had moved the pool down near the end of the dock and we got to be under the tent with the other exhibitors. I took Pride along this time as well. The director of Historic Ships Baltimore sailed on Pride when I did in 81. He was with the boat longer than me, and I think my model brought back some memories.

The pool's still too shallow, but she sailed a little and looked good even aground.

Pride got put in the pool for a moment, only the second time she's gotten wet. No sailing yet, her ballast fin isn't made yet.

Here's a little video of Stella playing in the pool:
https://youtu.be/Q9eBR-kax7k

Attached Photos - Click To View Large


mdlbt.com/30566
Building a deck - Posted: 24th Jun 2017
I began laying the deck on April 5th. It had snowed as recently as the week before, but it finally warmed up enough to use glue.

The strips were cut to 6-5/8" length, about 20' in 1:36 scale. I used a black marker on two opposite sides to represent the pitch in the seams. The deck was laid in a 5-plank pattern to mix up the butt-joints as much as I could. My research on her decking found she's had various styles and plank widths over her life. The earliest photo showing her deck that I could find, showed it straight planked with 7 or 8" wide boards based on the number of planks between her waterway and the main hatch coaming. Her waterway logs seem to be placed ON the decking, as there's no margin planks or joggling - even today.

The planking was set with gel CA. Gorilla sells it in a nice bottle with a metal pin in the cap to keep the spout open. It would up taking 3 of these bottles to complete the deck. The planks are cut at a 45 on the ends along the fore and aft access hatches, to try and hide this seam as much as possible.

Once the deck was down, I scraped it. The glue is more resistant than the basswood is, so sanding would have scalloped the wood between seams. Scraping makes everything level. Some lite sanding, more to polish than remove anything, was done last.

I had planned to stain the deck a very light grayish tint, but an active naval vessel gets holy-stoned regularly and wouldn't be gray as the ships that sit at a dock today are.

In all it took 455 pieces to complete the deck and there wasn't any scrap longer than 1 inch left over. In all I have 3/4" deck beams, 1/4" plywood, a layer of 4oz cloth and resin, and a 3/16" basswood deck - I don't recall why I designed it so heavy, but it certainly doesn't hurt the model at all, and I think the 3/16" square strip will prove to have been easier to set than the 1/16" x 1/4" planks Pride and Macedonian will get.

The deck go a coat of water-based satin poly, and I stared working on hatch coamings, cap log, and waterways. The cabin skylight and two hatched forward of it, including the capstan, and all combined into one hatch where the battery is accessed, and which hides the aft ballast rod and main power switch.

The cap logs Are 1/2" wide x 1/4" tall basswood that was tren'led, glued, and copper nailed, onto the deck, flush with the outside of the hull covering this seam completely. The the angled wood waterways were installed around the inside of the cap log, and the deck got a coat of oil-based satin poly. This actually leeched in and made the marker seams bleed a little. In hind sight, I think I'll go with paint over marker for seams in the future.
The coamings got painted black. I'm not sure why the Navy painted deck fittings black. It was even common to paint to top surfaces of tops black. I wonder how many injuries and losses this cost the navy that white paint would have prevented. Anyway...
Constellation didn't have "solid" bulwarks, but rather she had hammock irons bolted to her cap log. These were removed when Baltimore tried to pass her off as a frigate and tossed in the bilge. When the ship was restored as a sloop of war, they found all but one. These irons are designed to have wooden rails at their tops, inboard and out, and have holes so several lines can be run through them. The Navy in it's wisdom though, decided to wainscot them to appear as solid bulwarks, despite the additional splinter hazard that would be in battle.

I wasn't making all those metal stanchions just to hide them under wood and tarps, so I made wood blocks sheathed in sheet bass, scribed to look like vertical wainscotting.

It was the end of April by now, and the Baltimore Port Expo was in two weeks. I wanted to have hammocks in the bulwarks, as she appears in the portrait, but there was no time to figure this out, so I layered on some balsa and shaped it so it looked like tarps were laid over the hammocks. When I figure out how I'll represent the stowed hammocks, I can pull the balsa off easily enough.

The bulwarks on, I made some fittings for the spencer masts; installed the eye bolts at the base of the masts; made some bollards (or whatever name they gave those posts), made and installed the catheads, which are laminated 1/16" basswood.

I then started setting up a jury rig and her controls so she could sail at the Port Expo. I set her t'gallants and all three heads'ls this time around. By the night before the Expo, she was ready to go.

Attached Photos - Click To View Large


mdlbt.com/30534
The Spar Deck - Posted: 23rd Jun 2017
Once I was satisfied I had all the fairleads I needed, or might need (I put in some extras, just-in-case), It was time to permanently close up the deck.
The luan plywood sub-deck had long ago been cut into 2" strips to allow it to take the deck camber and sheer. I had also painted on it's underside except where the deck framing was, so the paint wouldn't interfere with the epoxy.

I got a few very nice days in October (2014) great for dealing with epoxy, and to take on this major step in the model's construction. There's a sinking feeling about this, like you've just locked your keys in the car.

First I removed the mechanical decks below, cleaned out the hull, replaced a deck beam whose joint had never set right, and dabbed epoxy onto things I'd never be able to reach again. The mechanical decks were painted white. The turning blocks for the steering were epoxied in place; having been hot-glued in all these years.

Now I painted epoxy on the entire underside of each strip to seal it as well as glue it to the deck beams. Working from out-board toward the center-line. I clamped the strips down, but also used copper tacks to hold it down that would be left in. In short order, the sub-deck was epoxied and nailed in place. Now the only access inside was through the hatches.

All the cracks and seams on the deck were filled with polyester putty (Bondo), especially around the deck/hull joint. When this set, I sanded it, filled missed places, and sanded some more. Then a layer of 4oz cloth, left over from glassing her hull 5 years before, was laid on the sub-deck. At this point the deck was an integral part of the hull.

I ordered 3/16" x 48" square bass strips to plank the spar deck. I was going to cut this from a maple board I hand, but could get what I wanted safely from the saw. I was concerned bass (lime) wouldn't be hard enough, but it's been great.

As holidays and cold weather reduced the time I could spend in the shop, I made up the rest of her spars and their hardware; as well as framing up and installing the fore and aft access hatches.
I also cut the deck strips to their length. Then winter came and stayed until April.
Meanwhile I hemmed the rest of her sails.

Attached Photos - Click To View Large


mdlbt.com/30507
New Brace System - Posted: 23rd Jun 2017
I've kept a log of this build on RCGroups forums since 2009. We share experiences, brainstorm ideas, and help each other out with a lot of the idiosyncrasies of RC square-rig sailing. A fellow there named Dan and I had a long running discussion on dealing with slack in the braces when there are prototypically mounted near the ends of the yards. This discussion led to the sliding winch. The winch servo, unaltered in any way, is mounted on Delrin blocks with holes through which pass a pair of brass rods. The winch can slide fore and aft on theses rods. A pair of aluminum angle hold the ends of the rods so the servo is off the deck and can move freely. A pair of spring are on the rods to provide tension by pushing against the winch.
When the yard is square across the model, the servo is pressing on the spring(s). As the yard is turned, the spring pushes the winch back on the rods taking up any slack in the braces.
I mounted everything on a pallet again, keeping it modular so I can get at things, and easily take them out if need be.
While assembling it, one of the winches started acting strange. I replaced it with another one, which required, removing the winch drum screw and drum; unplugging the servo from the receiver; loosening 4 screws that hold the winch to the slide-blocks; then do all that in reverse to put in the new winch.
I also got Servo-Stretchers that increase the the sail-arm servo's range from 90° to 180° and allow adjustment of the center position.
You'll notice two servo-trays in the pictures; the other one is for the Macedonian frigate model.
As the year went on, I installed bumpkins for and aft. Got some gold dry-transfer lettering and put her name on her stern. Made t'gallant/royal masts.Made a servo arm for the rudder servo that had cleats to allow steering cable adjustment. And installed fairleads for the running rigging below.
All things that had to get done in order to put the spardeck on.

Attached Photos - Click To View Large

Response by Dave M on the 23rd Jun 2017
Ingenious method of taking up the slack. Does the spring place a constant load n the servo?
Dave
Response by Jerry Todd on the 23rd Jun 2017
When the yards are squared, the springs are compressed. I use springs that are just strong enough to push out the slack, not make bracing a battle between winch and springs.
You can see how it works here: https://youtu.be/jWRBJpLYe6s

mdlbt.com/30505
On Public Display - Posted: 23rd Jun 2017
This would be the first time I ever put something on public display. Well, some drawings went up in a high school art show, but this was certainly the first model.
The Port Expo had set up a pool on the dock next to the N.S. Savannah. It was windy, with the wind whipping around the ship every which way. The pool wasn't deep enough for the model to sail, so she just sat there tied off to one end, or down in the lee corner. Not a big deal, but I got to talk to a few folks about her, and that was fun.

One of the other modelers told me about the model expo at the Chesapeake Bay Maritime Museum in St Michaels Maryland, in just two weeks! Last time I had been to that museum I went on a 170 foot barkentine, this time the boat would be a little smaller.

There was no way I was going to get much work done on the model in the time I had, but there was something I wanted to try out.
From the start I had a sail-arm servo set-up to handle the fore-and-aft sails, but I hadn't worked out how it would work. The heads'ls over-lapped and each had two sheets. When the model come-about, the heads'ls needed to be hauled over the stays to the other side.
When sailing a real boat, like my 16 footer 'Lydia,' it's the same thing. When you start to come about, you cast-off the jib sheet. As the boat comes across the wind, the jib luffs and comes across mostly on it own. The the new sheet is hauled in and made fast. I wanted to emulate that on the model. My solution was two loose arms with the servo arm between them. The servo pushes one or the other of the loose arms to sheet the heads'ls - but not both. Center the servo and both jib-sheets are slack.
It's incredibly simple and works on a single servo.
I cobbled the system together in time for St Michaels. We also got one of those pop-up tents, and a folding table. I was taking the Pride of Baltimore model, and the Macedonian hull as well. I was getting into this public display thing.

The Model Expo was great. There were a boat-load of modeler's and model there. The pool was much larger, but it was still too shallow, and Stella ran aground after sailing only a few feet.

Only Constellation went in the water, but all three models got a lot of attention and I spent a lot of time talking to folks about them.
The jib-sheeter worked great, though the servo only had 90° of travel and the Dx6 isn't programmable that way.
When I got home, I went right to work on another control mechanism I wanted to try - the sliding-winch.

Attached Photos - Click To View Large


mdlbt.com/30477
Changes in latitudes - Posted: 22nd Jun 2017
After the sail I tried to figure out how to make the chain plates. The links below the channel are easy enough, but the doubled rod strap that wraps the deadeye was (and is) giving me headaches.
I was originally going to bolt the chainplates to the hull, but instead I intend to use round-headed brass wood screws, and I've installed oak strips inside the hull to give them something to bite into.

You may recall I'm modeling the ship as she was new, when her portrait was painted in 1856. There's nearly nothing showing what her stern looked like but one etching done of her in dry-dock in Boston in 1859 when she returned from her first cruise. Several painting of her contemporaries show very similar stern ornamentation. I already had the moldings applied based on the drydock drawing, now I made the three rosettes she still carries today - her "constellation of stars."

My first attempt was too think and bulky, so I started fresh with a bit of boxwood, and used styrene to apply details. Once done, it got a coat of primer and then I pressed it into clay to make molds for the casting resin. If I had a "Constellation Restaurant" my butter pads would all be molded like this :)

Checking into the fashion of the day for depicting stars and things astronomical, I painted the stars gold on a royal blue background. They were then epoxied to the hull and quarter galleries.

Soon after, I lost my job of 18 years, and about a year later had to move out of the house and in with my girlfriend. The models literally went on the shelf.

She sat on top of a cabinet for nearly a year when I got an invite from the director of Historic Ships Baltimore to bring the model to the Baltimore Port Expo celebrating National Maritime Day.

Attached Photos - Click To View Large

Response by Dave M on the 22nd Jun 2017
Great detail on the chainplates. The castings have made the model so authentic.

mdlbt.com/30476
Sailing for the First Time - Posted: 21st Jun 2017
In April 2011 I set a deadline to sail the model for the first time on July 10th. I had places to go and other things to get done, so I figured that was far enough ahead to have her ready in time. There were a lot of things that needed to get done if the model was going to sail;
* Shape the still rough cut yards; fore course, fore tops'l, crossjack, and mizzen tops'l yards.
* Complete the yard trusses with mast bands and banding to attach them to the yards
* A gammon "iron" for the bowsprit.
* Rudder control & steering.
* New winch drum for braces (the originals with wood drums warped badly).
* Sails for planned sailing suit; 3 tops'ls, spanker, and jib.

She was basically jury-rigged, with all three course yards linked together to a single winch.

July 9th's forcaste was for perfect weather, light northerly wind, blowing up the creek so if there was a problem, the model would drift back to me. Unfortunately, I wasn't ready by the 9th and the 10th was light, variable, fluky, 90°, and humid.

The top mast fids were pulled and the topmasts lowered. The model with some tools, her ballast, and what I thought I might need were all placed in the truck the night before. The radio and main batter were put on charge.

Next day we drove the couple of block down the street to the Sloop Cove public dock on Stoney Creek. The rig was raised, ballast attached, electronics connected and tested, and she went into the water. With her ballast and extra lead I had she still sat 2" high in the water.

I set her out, but the iffy light wind sent he back, then she threatened to get tangled with a powerboat on a lift until I managed to squeek her out into open water.

She sailed a bit, but just when she'd get moving the wind would shift or reflect off something and catch her aback. Then suddenly she stopped responding at all. Something of a gust caught her and she headed for a dock. I headed over, which meant swimming, and not being a great swimmer realized I should have brought my flotation vest from my sailboat along. It being so hot, the swim wasn't exactly unwelcome, but it was a lot of work.

The model sailed right into the end of a dock about 100 feet away, bounced on her forestay, and basically parked there. I got her back to shore looking like a drowned cat myself, but there was no damage at all to the model. As it turned out, the main battery failed.

Attached Photos - Click To View Large


mdlbt.com/30451
Controls - Posted: 21st Jun 2017
Initially, control of the sails, or rather the yards from which the sails hang, was going to be done with sail-winch servos; one for the yards of the foremast, another for the yards of the main and the mizzen mast combined.
Each controlled yard would have two drums, one to take up it's braces as the other payed them out. The controlled yards would be the fore course and tops'l yards, the main course and tops'l yards, and the mizzen coss-jack. This meant the main/mizzen had 6 drums and the fore mast winch had 4. The drums diameter corresponded their yards as each brace was of a different length because of the distance from the centerline that the brace was attached to the yard. Since each brace was being controlled by one winch turning at the same speed, the difference had to be made up in the drum diameter. The flanges separating the drums were compact-discs (CDs).
The point where the brace attached to the yard describes part of a circle as the yard is turned. The winch drums too, are circles, but the brace from the yard to the point it turns down to the deck, is a vector. Because of this, both braces are tight when the yard is squared, but as it turns to one side, the take-up side stays taught while the paying out side goes slack. Slack on a winch drum is not a good thing, so some means of taking out any slack has to be devised. At this point I was going to mount springs on posts in the hull. They would maintain tension on the braces all the time.

The two winches and a sail-arm servo that would control the heads'ls and driver, were all mounted on a tray, or pallet, that would be screwed to the mechanical deck. One winch had to be mounted higher than the other so the drums and braces wouldn't interfere.

The real ship's yards were/are attached to the masts and pivoted on iron "patent trusses." I made my facsimile of them from aluminum with brass #2 screws, nuts, and eye-bolts I bent and threaded from brass rod. The clevis between the yard and the mast is 1/4" aluminum rod drilled through and shaped.

Attached Photos - Click To View Large

Response by Dave M on the 21st Jun 2017
Very impressive and authentic. It must take a whole heap of concentration to operate the sail controls.
Response by Jerry Todd on the 21st Jun 2017
The biggest pain in sailing her is the Dx6 transmitter, or any transmitter of that sort. I only wanted self-centering on the rudder, everything else I wanted ratcheted so it would stay where I put it, but the only channel with a ratchet was the throttle. I took off the self-centering springs where I didn't want them, but there's no easy way to ratchet them, and they move if you breathe on them.

Spektrum doesn't know for boat, or care for boaters, especially sail boaters. They sent me a contest entry questionnaire and the very first question was; "Do you use your radio for Helicopters, planes, or cars?" None of the above wasn't an option.
Response by Dave M on the 22nd Jun 2017
Yes
Manufacturers seem to ignore the model boat fraternity.
I use Taranis Tx as I can program it to do exactly what I want which is a boon with multiple servos to control. I do all the mixing on the Tx and output to the my chosen Rx channels from 1 Tx stick.
I suspect you will have to make your own ratchets. The vertical sticks probably have all the bits but the horizontal will not. Have you considered using one of the knob controls?

mdlbt.com/30407
Masts, mast steps, inside the hull, the rudder - Posted: 20th Jun 2017
The model's lower masts are made of white cedar. These were cut square, a taper hand-planed in, made 8-sided, then round. The bands are the same brown paper tape the hull was covered in.
A visit to the real ship in Baltimore to get measurements, and look at some artifacts netted me some bits of live oak original to the ship. The Navy began stockpiling live oak for ship-building in 1816 with the Gradual Increase Act. It was from these stockpiles that Constellation was built. These trees were as much as 200 years old when cut, so this wood I have could be as much as 400 years old. I wasn't sure how to incorporate this bit of the ship into the model, and opted to make the mast steps from it. One piece is the size of a business card and stamped USS Constellation 1854. I'll stamp the year she's finally finished and my name into that and install it as her builder's plate.

The masts step on what I call her mechanical decks. These are simple 3/8" plywood panels where her mechanics and controls will be mounted. Beams were epoxied into the hull for them, and they are held in place with brass wood screws. The aft deck is where the mizzen steps and the rudder servo is mounted. The battery lies on it's own deck just abaft the main mast as low as it can possibly be inside the hull.

The cross-section drawing shows deck beams, decks, ballast rods, the external ballast, etc etc etc.

The rudder is made from Plexiglas as shown in it's drawing. A brass tube passes through the stern that the rudder's head just fits into. There's no room behind the rudder head for a bell-crank setup to work, so I again went with real boat tech and installed a tiller, made of copper plate soldiered to a set-collar.

There's a couple of pictures of the aluminum tubes for the ballast rods in there.

You may want to right-click on an image, like the drawings, and "View Image" then click on it to see it full size and legible. Use the browser's "back" button to get out of that.

Attached Photos - Click To View Large


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