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Torpedo Stern Cruiser
Background: Bill (Jolly Roger) laid up the hull for me with a mold he borrowed from Brian. The hull's length is 52.5 inches with a beam of 11.8". Bill did a fine job making this sturdy hull. I had planned to leave the Marlin Blue gel coat as the final finish below the waterline but the boat takes too many bruises during building. I'll paint the entire hull with Klass Kote epoxy paints. The finished boat will look something like this:
http://www.rumerys.com/T38main.html Building began with the installation of the inside sheer spruce stringers. These are 1/4" x 3/8". I had to laminate the area along the curve of the stern. It's all held in with epoxy glue and 0-3/8" brass screws which will be covered by the (as Royal Lowell calls them) sheer guards. I call them "rub rails". The skeg for the rudder bolts through a maple block which is epoxied deep into the keel and sealed in with epoxy resin. A putty dam kept the epoxy from running into the hollow keel which might later be filled with a lead shot/epoxy mix if the boat needs the ballast. The rudder is made from .052" stainless and is silver-soldered to a 3/16" dia stainless shaft. I used a BenzoMatic Oxygen/Propane torch to do the soldering. The super-hot flame really flows the solder. Some of the aft rudder will be trimmed off if sea trials show that the boat is too sensitive to steering input. The rudder shaft rides in flanged Oilite bearings. The spruce deck beams have balsa crowns which will make for easier long-board sanding when it comes time to true up the beams prior to deck sheeting. Ed |
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Just how I do mine, I use a dremmel cutoff wheel to cut the ss shaft slot for the rudder , the beautiful thing about a removable skeg, & ss is soft so you can crimp the blade with the shaft ends while in the hull
billhttp://www.rcgroups.com/forums/attac...mentid=3241744 |
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Framing
Most of the framing is finished. Next comes the 3/32" ply sub-decking.
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The 'Mongoose'
Ed... A quick question.
I've been trying to track down a set of plans for Ken Reilly's tunnel hull the "Mongoose". I built one of them many, many years ago and now that I'm retired I'd like to build another. Might you still have a set of plans or know where I can find them ???? Thanks, Bob renosmith991@msn.com |
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Bob, I might still have the plans. I'll get back to you tomorrow.
For curious forum members, here's the Mongoose: http://www.rcgroups.com/forums/showthread.php?t=1021734 Ed |
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Hinkley
Here are some great photos of the Hinkley Picnic Boat. Just look at that all that mahogany! The cabin door is a work of art. Where can I find cabin ports like that?
http://www.yachtworld.com/core/listi...oat_id=2220308 |
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werlec,
Maybe the next boat will have a proper Hinkley hull and jet drive. This boat will be the mock-up for cockpit layout, etc. The pics show a few of the parts getting glassed. There's the captain's pedestal, port seat, table base, aft seat and misc. parts. The jigs used for glassing will also be used for painting.
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Bill (Jolly Roger), do you recall how Brian's hull sat in the water? I'm wondering if the bow section, as slender as it is, might tend to set a bit low, requiring the batteries to be positioned way aft.
Hi Ed, I had only a few pictures to go by when I laid up the hull ![]() that is why i marked the boot line "Rough Guide Only!" as you can see in the attached photos Brian has a rather large wet or jel battery in the stern Guessing the best bet is to as Grumpa Tom aka kmot, said, is to use a DTTF, to get an accurate Boot. Wish I had the answer for you but the best I can do is the photos jolly roger 1 arrgh
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frankg,
Here are the engine specs on a 2005 Hinkley. I suppose they're typical of the 36' picnic boats: Engine Brand: Yanmar with water-jet drive Engine Model: 6LY2A-STP FWC diesel Cruising Speed: 25 knots Maximum Speed: 29 knots Bill, the gelcoat was included in the box. Looks like I might be correct on needing aft weight. That's quite a big battery in Brian's boat. Thanks for the pics. Ed |
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United States, DE, Lewes
Joined Dec 2005
394 Posts
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Quote:
Here is one: http://www.yachtworld.com/core/listi..._id=16344&url= 440 big ones almost $1K per hpBTW - I'll be posting some pix of my BB soon - the outer "planking" is almost done
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barnegat nj usa
Joined Nov 2009
146 Posts
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It is a 57 footer with twin 1,300 HP MAN's. built in Coecles Harbor- Shelter Island NY by CH Marine. The owner had it built custom for him. He also owns the boat yard. He didn't make his money in the boat business. He wrote a few songs ,sings and plays the paino.
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Guards and Rails
Thank you.
Royal Lowell's book, "Boatbuilding Down East" goes into great detail on making toe rails and sheer guards (rub rails). The guards and rails will be held in place with 0-1/4 screws while the epoxy glue sets up. The screws are run across a wax block before inserting and are removed before the epoxy hardens. To get the proper cross-sections, I grooved a block which fits under the drum of my thickness sander. Sure speeds up the job. |
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Ed, your looking better and better all the time. When I was growing up there was a sportfisherman in the river that was a draketail called the ''TOOTSIE''. It had a cabin with a flying bridge and a pulpit on the bow. Last time I saw it, the owner had cut the round stern off and built a flat stern on it. Only problem with a draketail was a following sea or backing down hard.
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Charlie,
A major construction challenge, (for a model boat and probably for the full-scale boat) is making the aft rails and trim moldings for a draketail. I had to make the rub rail around the stern as a 3-layer lamination. The mahogany molding around the aft combing will also have to be laminated. The aft toe rail also took more time than just laying down a straight piece of wood. Is there a functional reason for a draketail design or is it just a matter of style? Ed |
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Joined Dec 2004
3,121 Posts
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The Drake Tail transoms are defiantly cool looking and when you add the compound curves from the shear to the chine along with the rounded transom into the sides of the hull, can be a bitch to build. As for a specific reason for the transom, I know not. The one thing I do know is I would not want to be off shore and loose power in a following sea, because it would roll right up the transom into the rear cockpit. I think the same would happen if you chopped the throttles real quick.
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This thread added to WOODIES: Wooden Pleasure Craft Build Logs listing.
Path: RCGroups -> Boats -> Scale Boats ->"WOODIES..." Really nice work! |
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Ed, I don't know how it came about either but it seemed to develope from the old lobster smacks when they went to gasoline engines from sail and found a following in the Chesapeke Bay also. The Maine Maritime Museum has a good collection of older lobster boats, they may have the info on that type of hull.They could get a bit wet at times if that stern dug in. The old USCG 40' utility boat had a flat stern with not much freeboard and you back that down fast you got very wet so a sloping stern like the drake tail could only compound that some.
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Joined Sep 2008
6,009 Posts
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tell you something kind of funny. I have to rebuild the 25 foot personnel boat belonging to my first ship (after the CPO put it alongside a stone quay wall without fenders), he tore better than half the rub rail off the side and along the bow. Eventually we had to hand make the rubrail from solid mahogany (three smaller thicknesses) to make up the almost 2 inch thick rub rail. One of the references we ended up using had almost the same illustration in Lowell's book (although all we got was the figure so I do not know where it came from). The full thickness rub rail was nearly inflexible and impossible to bend to the curve of the hull, we had to buy three lengths (which the CPO mentioned above screamed about the cost), band saw then to a smaller thickness, borrow something like 50 clamps from the base woodshop, and laminate the curve from the flat side around to bow. We made a smaller piece for two feet of the bow from the stem to either side, both laminated and pieced together.
Foo |
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Bill, when you said "...rolling the air out of the tail....", I assume you're talking about the difficulty of using a small paint roller to roll the glass cloth onto the mold at the stern, right?
Craig, thanks for listing my build log on your "Woodies" thread. Charlie, I'll check with the museum on the origin of draketails. Thanks for the tip. Foo, not much difference between real and model boat build/repair techniques. Since I had no way of clamping the stern rub rail, I screwed the first lamination to the hull, let the glue dry, then screwed plank 2 and 3 through the same holes. I'll use the clamping method when I make the molding for the aft combing. Thanks for the post. See http://bayweekly.com/old-site/year01.../lead9_41.html and drop down to the draketail discussion. An excerpt: "Ironically, it’s that beautiful draketail at its end that might have brought the boat to its end. The rudderpost was hard to get to for repair and maintenance, resulting in rotting around hull-post fittings......" Ed |
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Bill, when you said "...rolling the air out of the tail....", I assume you're talking about the difficulty of using a small paint roller to roll the glass cloth onto the mold at the stern, right?
Hi Ed, I gave up on using felt rollers on models several hulls ago, instead I use chip brushes to wet out the surface. Following with dry material then I use my micro air roller to wet the meterial's out & remove any trapped air. Another thing I do is I only lay up 1 station at a time. On your hull I had 4 stations + the stern. the trick is to get it all wet out before it kicks off. skinning out the prepped mold's was fairly easy as the hull halves were apart, but once the 2 parts came together it was a different story as to tieing the halves together in the stern at the chine & the turn of the transom all at once & the air roller is 1" long X 1/4" thick bill
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Power Distribution
Thanks for the comments.
Here are some pics of the battery packs (12V total) and power set-up. Batteries are 5000ma D-Cells. Ed
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Grab Rails
Have the grab rails done and finished with three coats of MinWax Helmsman Urethane.
Here's my method: http://www.rcgroups.com/forums/showt...1113173&page=5 Drop down to the Jan 3, 2010 post. Ed |
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I made it from brass plate and rod.
The collar for the handle was made in the lathe and tapped 1-72NF. It screws onto the handle. The handle goes through the hole in the plate and screws into the door. There's plenty of purchase for the handle's threads because the mahogany door is built on a 3/32" plywood backing. Ed |
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Quarter Guards
The quarter guards (crash guards?) are finally done. They were too stiff to follow the hull contour so I had to add a wedge to the aft end. The forward part of the guards are secured to the hull with #1x3/8" brass screws. The aft area, where there's no access to screws from the inside, is held in place with 2-56 stainless screws threaded into the hull.
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Marker Buoy
Tom, I save everything!
Here's a pic of my marker buoy. The bobber will be attached to a float-away cabin hatch. The bow section is filled with in-place foam and the stern is filled with foam blocks. Still not enough flotation so some means of recovery is required. I tested a similar system on a tug in the neighbor's swimming pool. As long as the bobber clears the sinking boat, it'll work. If the boat capsizes, there'll be a problem. |
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Air Intake
Hi Ed, Sure looks like Saito parts, The thing I am asking is are the louver vents in the storage box & seat base, open for air supply to the engine.
I am thinking that is a very cleaver way to allow an air supply to the bilges. on the big boys we build a snorkel shaped inlet box under the wash boards just forward of the stern deck on both the stb. & port sides, this also works well for keeping the bilges nice & dry. ![]() The weather here in Downeast Me. is not cooperating much either, for out door projects. argh, bill |
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Bill,
In your first sentence, do you mean "motor" and not "engine"? This boat doesn't have a Saito engine. The previous boat (Lowell cruiser) is the hybrid with a Saito .45 and an Astro Flight 40 back-up motor. http://www.rcgroups.com/forums/showt...1113173&page=9 |
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Quote:
![]() I thought the Saito .45 was in the Drake tail guess now I understand argh argh, bill |
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Prime Time
Finally had good painting weather so I primed all the parts, 21 in all. I used Klass Kote 2-part epoxy primer.
Next comes some spot-putty to fix any imperfections then some light sanding followed by the top coats. White above the WL and dark green below. Getting close........... Ed |
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