Roger Pellett
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Everything posted by Roger Pellett
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Actually, in the 1960’s there was quite a bit of, for its time, high level Naval Architecture performed to optimize these towboats. Propeller/Kort nozzle combinations, flanking rudders, and even tow sizes were all studied. The University of Michigan operates the second largest experimental Naval Architecture Towing tank in the USA. At 450+- feet long it is about half as long as the US Navy’s 1000’+ long tank. As a student in the early 1960’s I remember a model towboat with various numbers and arrangements of barges being towed. This would have been an expensive project and I don’t remember who the client was. It could have been US Govt Maritime Commission. Someone, however, spent a lot of money determining the optimal way to make up a tow. Roger.
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Your keel rabbit looks like it’s coming out nicely!
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Sure, when the first in her class was launched, there probably was a lack of ventilation in the space behind the window, SO, send someone uptown to buy an AC unit! The fix was then repeated on follow on boats. Roger
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Is it possible that “hydroplane” gets confused with “hydrofoil”? Earlier pictures posted show submerged wing like lifting surfaces. Roger
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Valeriy, great work as usual. I’m sure that you noticed the split accommodations for the crew; one before the stack and one behind it. This was typical of steamships built in British shipyards for the British Merchant Marine. The reason? The Deck Crew insisted on separate accommodations from the Engineers! At the Beginning of World War II, the famous American Naval Architecture firm of Gibbs and Hill was contracted to modify the design of the the British Ocean class cargo ship design for American mass production, the result being the famous Liberty Ship. The Oceans featured deck crew quarters separate from the engineers. Gibbs and Hill eliminated this silly feature, combining everything into one deck structure. Roger
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Re; Window AC Unit In 1972 I made my first of several business trips to Europe. To visit a nearby Mannesmann pipe forging plant I stayed in a hotel along side the Rhine River in Düsseldorf. I was fascinated by the variety of river craft passing by. These vessels of several European Nationalities were often crewed by families and had potted flowers at the windows, laundry drying, bicycles and occasionally a small car stored on board. My point is that riverine craft are often an interesting mix of maritime culture and down home amenities. While the modern US towboats are usually corporate owned they do not hesitate to utilize shoreside gear. Roger
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The first question that you need to answer is how you plan to build it. Lumber choices then follow. The currently popular method Is POB. This consists of erecting many bulkheads on a wooden spine and planking hull with wood strips. You will almost surly need to apply copious amounts of sort of harden-able putty to help you fair the result. As GrandpaPhil suggests this sort of model can be sheathed with fiberglass. Wood for this type of construction: Central spine, bulkheads quality plywood, 3/8” thick. Basswood or pine strip wood planking. The other option, less popular today is a carved wood hull. This system was used to build the large experimental models for tank towing to determine hull resistance and the magnificent large scale models of US Navy warships built by Gibbs & Cox during World War II. Their 1:48 scale USS Iowa on display at the Smithsonian is an example of model making at the highest level. You of course carve this type of hull from a solid log! Instead you laminate layers of wood band sawed to shapes derived from the waterlines found on the vessel’s lines drawing. Personally, I love carving ship model hulls. If I were doing this, I would use quality 1in nominal or perhaps 5 quarter lumberyard pine. Roger
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Building ship models can involve solving such a wide rage of problems that it really depends on what you’re trying to do. For gluing wood to wood commonly available PVA glue; the yellow stuff. Elmer’s, Titebond, both work fine. Possibly other brands too. IMHO, it’s all the same stuff. Requires clamping pressure. Special gluing problems like lightly loaded or interlocking metal to wood joints: Nitrocellulose based glue. Nitrocellulose based clear fingernail polish works great. It also works for wood-wood joints where clamping pressure cannot be applied. Duco is its the same stuff, just thicker. For larger wood metal joints, Epoxy. I especially like JB Weld, it’s easy to squeeze out a couple of blobs and mix. Eyeball can judge 1:1 proportions. CA Glues: Don’t use!! Roger
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US Navy Launches changed significantly during the period before the Civil War. Note that I refer to a specific boat type, not just any boat carried aboard a Warship. First of all they were sloop rigged. Ref; US Navy Ordinance Instructions 1860. Other details are listed in period seamanship manuals. Roger
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Amazon Prime Series Victory at Sea
Roger Pellett replied to Guyuti's topic in Nautical/Naval History
In the NROTC program Naval History was a 1 semester course, I believe sophomore year. Like OCS, Victory at Sea was part of the curriculum. Some guy, a fellow Midshipman was allowed to bring his stereo to class so we got full benefit of the music. Roger -
These double or raised Pilot house were seen on many Great Lakes vessels too. The original arrangement was an open bridge atop a closed pilot house. The watch stander stood on the open bridge and relayed orders via speaking tube to the wheelsman below. Later the open bridge was enclosed resulting in a second pilot house. Photo original arrangement below: Roger
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Blades for Artesania Latina Cutter
Roger Pellett replied to brunnels's topic in Modeling tools and Workshop Equipment
If your need is to cut wood strips for planking a POB kit hull, a Model maker’s razor (Hand saw) works fine. These often are sold in sets along with a small miter box. Look up Zona Saw on Amazon. Roger -
Blades for Artesania Latina Cutter
Roger Pellett replied to brunnels's topic in Modeling tools and Workshop Equipment
Sorry but I disagree. Properly heat treat steel tears. It does not chip like these blades did. Ordinary steel used for consumer products is relatively soft and ductile. It cannot be hardened by heating and cooling. To produce steel suitable for holding a sharp edge it must be alloyed with something else, the cheapest way being to increase the carbon content. This “tool steel” is hardened by heat treatment. After heating to a high temperature, it is rapidly cooled by quenching in water or oil. In this state it is very hard, brittle, and can shatter under impact. To make it usable it must be tempered at a low temperature. It would seem that in producing these blades the final step was omitted. Long story short, they’re defective. Roger -
Steven, I understand that materials readily available in one country may not be in another, BUT! Here in the USA we have a Company called K&S. They sell thin walled brass tubing in sized from 1/32” OD to about 9/16”OD. Each size telescopes into the next size larger. They also sell similar metric sizes. This stuff would be ideal for your roof supports. Using the telescoping of two sizes you could avoid soldering. Roger
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Of all of the American Clippers being built or contemplated on MSW, Flying Fish appears to be in First Place. Maybe the reason is the availability of the Model Shipways Kit. Readers might, therefore, be interested that in the late 1970’s Model Shipways commissioned a new set of drawings to accompany the kit. The drawings were prepared by a then well known member of the Nautical Research Guild. It might have been Ben Langford but I don’t remember. Anyhow, at that time, he wrote a very interesting article in the Journal about the research that went into the new plans and the assumptions made. This article should be available as an inexpensive back issue from the guild office. Roger
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When I was 3 or 4 years old my father was building a 23ft L. Francis Herreshoff sloop in our side yard. This generated a lot of scrap lumber that he turned into a large bag of building blocks. I enjoyed them for years thereafter. No Legos. Roger
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I have little or no patience with computers but I have an active build Log for my current project here on MSW. Build logs here on MSW are stand alone. They do not require You Tube, Face Book, or anything else. In your case go to Build Logs for Kit Models. Pick the date range that applies to your model. Open a new topic, and start telling your story. If you have photos saved, click on Add Files at the bottom of your post. It’s really as easy as that! Roger
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You can make your own black paint with the exact amount of gloss that you want. Buy a tube of artist’s acrylic black and a bottle of acrylic gloss medium. A tube of white would also be useful for adding a “scale effect” to the black. Here in the US any craft store will stock these items. Start by squeezing out some black on a palette; a piece of glass is perfect. Mix in a little white to get the right scale color. Add a little gloss medium. When you’re happy with the result, mix up a larger batch, thin with water, and paint. Roger
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Some forum members, particularly those glazing the windows in the sterns of Nelson Era sailing ships use Mica. It supposedly cuts with scissors. Perhaps there’s some on your farm! Otherwise check Amazon. Roger
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Ok, I think that I can see what’s going on. It would appear that the red orthogonal lines on the floor are permanent, representing the waterlines and buttocks in the end (body plan) view of the hull. Vertical markers are then set on the floor at strategic locations at offset locations known from the lofting. The framing segments are set against these markers. The templates can then be used as a final check and for marking additional information as needed. A clever system. Roger
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Andy, A remarkable project; duplicating in miniature at more or less the same time that the full sized vessel Is being rebuilt near by. I have a question about the two photos that you posted. Old shipbuilding texts, both for wooden and iron/steel construction mention the use of a “shrieve board” for assembling frames. This was apparently a large portable floor with all frame shapes scribed on. Your guys appear to be using a similar but different system. I see the waterlines and buttock lines forming a grid (red lines) on the floor. I also see the plywood template. Are the actual frame shapes marked directly on the floor as with the shreive board? I can’t see from the photo. Was the template used to mark the shape on the floor or is it used somewhere else in the assembly process. Roger
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For some, but by no means all kit manufacturers, the names given to these woods is little more than a marketing opportunity. Their advertising leads buyers to think that they are getting deluxe materials while in reality as Jaager points out the species offered would not be chosen by experienced scratch builders. As a general rule, the real premium ship building woods are slow growing species with tight, coded grain structure. Many fruit woods would qualify. Roger
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Great workmanship as usual Valeriy!
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Making lifeboat small mast for 1:200 Yamato
Roger Pellett replied to Olaf's topic in Metal Work, Soldering and Metal Fittings
Since you have posted this under metalworking it would seem that you are considering metal. Metal, particularly brass can be an excellent choice for very small parts as grain is not a factor. A piece of hard brass wire should work. -
Mini Bench Drill Press
Roger Pellett replied to Gregory's topic in Modeling tools and Workshop Equipment
The company that I worked for had a metallurgy lab for testing the effect of different hot bend temperatures and subsequent heat treat cycles on pipeline steels. A key requirement was impact strength. Charpy impact specimens make good lathe parallels as they were surface ground to close tolerances. There was always a bucket of unbroken specimens left over from testing a particular heat that were scrap. Roger
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