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Roger Pellett

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Posts posted by Roger Pellett

  1. The “coppering” is most likely the artist’s representation of red lead paint. Note that does not extend all the to the load waterline; only as far as the ship would be expected to float light. In addition to Bob Cleek’s reasons above,  The copper sheathing would be damaged during launch.  For launch,  the ship is supported on the ways by two supports, one in the bow and one in the stern called poppets.  If the naval architect has done his job properly the stern will lift off the ways as it enters the water and gains buoyancy.  This means that the bow must rotate about the fore poppet.  While the fore poppet is designed to crush when the bow rotates, some rubbing between the ship and poppet would be unavoidable.

     

    Roger

  2. Everyone has different work habits and abilities and mine are not the best.  I struggle to maintain a clean work environment.   Keeping an airbrush clean requires periodic disassembly so for me simple and rugged is better.

     

    I have a Badger 350 airbrush.  In fact I have a spare but that’s another story.  It works well with my home mixed acrylic paints and is foolproof for me to disassemble and clean.  No long needles to bend.  It is available in three nozzle types, coarse, medium, and fine but the different nozzles all fit on the same body.  I pretty much just spray paint so I don’t feel that I need the additional features of a double acting mode.l.

     

    My air source is a no name compressor bought at Menards for about $100.  It has a regulator to control air pressure- Very Important- and a 3 gallon tank.  Fitted with quick disconnects it also powers an air nailer and easily pumped up a flat tire on my wife’s car.

     

    For me, having a good controllable air source is more important than a fancier airbrush.

     

    Roger

     

     

     

     

     

     

  3. I checked two contemporary sources.  Wilson’s Practial Shipbuilding- 1870 and the 1866 Ordnance  Instructions.  I also checked Arming of the Fleet by Tucker.  Other than a  mention of Deck Circles nothing is said.

     

    This lack of information does provide some circumstantial evidence about them.  Wilson’s book discusses bolts securing gun tackles in great detail.  It also includes rules where equipment mounted on deck required mortising of deck structure. These thru hole fasteners and deck modifications were apparently considered to be part of the ship itself and therefore under the jurisdiction of the Bureau of Construction and Repair.  Arming of the completed ship was the responsibility of the Bureau of Ordnance.

     

    If the deck circles did not require modification of the ship, there was no need to provide information about them in a shipbuilding text.  This leads me to agree with Wefalk that these deck circles were laid on top of the deck and screwed down  with large flat head wood screws.

     

    As a practical matter mortises into the decking and thru bolts would have been a source of leaking and rot.

     

    I believe that American practice was wrought iron deck circles laid on top of the deck and secured with large flat head deck screws.

     

    Roger

  4. In the context of 1805,  “Lifeboats” were boats that could be launched quickly to recover a man overboard so these tended to be relatively light seaworthy boats.  In the sailing US Navy these were often naval versions of whaleboats.  Launched quickly means that they had to be hung from davits.

     

    The idea of “man the lifeboats we’re sinking” was a much later concept.  Imagine trying to quickly launch a 30ft+ launch quickly.  These boats were workboats launched to handle specific tasks.  Prior to the Seventeenth Century these boats could be quite large and were often towed astern.  In the Eighteenth Century these boats were smaller and could be stowed on board.

     

    As long as boats have been made of wood they have been a nuisance and hazard in battle.  As late as WWII a burning boat on board was an unwanted source of illumination during a night action.  I therefore believe that Captains during the age of sail did not hesitate to jetson boats when clearing for action.

     

    Roger

  5. Fairly Nice is an understatement!  Your paint job looks great.

     

    Your models really show how “fat” these Grumman planes were.  A design philosophy that apparently carried over to their Wildcat and Hellcat fighters.

     

    I had a friend in college whose father was an executive with Grumman.  It turned out that prior to joining Grumman, his father had been the designer of the 1930’s air racer Gee Bee, the epitome of the short, fat radial engine powered aircraft, and supposedly very hard to fly.

     

    I wonder to what extent he influenced the design of these planes.

     

    Roger

     

     

  6. The Bessemer and Open Hearth technologies to make steel  in commercially available quantities were not available in the United States until after the Civil War.  The first Bessemer plant began production in 1867 and the first Open Hearth process approximately 20 years later in the 1880’s.  In this context, the term “steel” refers to an alloy of iron alloyed with a small (controlled) amount of carbon.

     

    Although the Crucible process was available for making steel in small batches it was an expensive material used for special applications.  Much of it would have been imported.

     

    Much of what we call “steel” in early America was, therefore, “Iron” in two forms.  Cast iron, a high carbon iron  alloy was used for making products shaped by pouring molten metal into a mold.  Cast iron was unsuitable where the part was subjected to cyclical loads or where the product’s final shape was determined by hot working; forging or rolling.  For these applications, wrought iron was used.  Wrought iron was formed by stirring (puddling) silica slag into a semi molten ball of iron.  When rolled in a rolling mill this produced laminar fibers of slag in a soft iron matrix.  

     

    Wrought iron  was a tough, ductile, and, versitle widely used material.  The railroads that supplied the Civil War armies ran on wrought iron rails, and the Confederates cannibalized these to armor their ironclads.  Union ironclads were also armored with wrought iron.  

     

    Wrought iron proved also to be an excellent, durable, shipbuilding material proven by the long term survival of the steamship Great Britain.

     

    With its availability, durability, and proven ability to withstand heavy rolling loads, I would lean towards its use for these cannon tracks.  American naval engineers were cost conscious, and in a hurry to expand the Union Navy to meet the needs of President Lincoln’s blockade.  Navy ships had large crews with plenty of time on their hands and rust stains could be minimized by a sailor with a holystone.  During war time, navies also tend to forgoe spit and polish to fight.

     

    Roger

     

     

     

     

  7. The first NRG Conference that I attended took place in the historic town of Marietta, Ohio, population 16,000 and 100 miles from any sizable city.  My wife and I were living there and I read about the upcoming conference in our local small town newspaper.  I had never heard of the Guild prior to this.

     

    Attendees included Harold Hahn, Bob Bruckshaw, Jack Kerzow, and Merrit Edson, all regular NRJ contributors and master modelers.

     

    I joined up immediately and have been a member ever since (45 years this October).

     

     

  8. For those of you interested in the Civil War Navy, I just started reading Engines of Rebellion by Saxton T. Bisbee.  The book is about the Confederate Ironclads and their engines in particular.  The first chapter is a good summary of the state of the art of 1860’s marine engineering.

     

    Roger

  9. I visited the Dossin Museum in Detroit years ago.  Unless it has been renovated in the past several years, I found little of interest there.

     

    For those of us who routinely travel with our spouses, it’s not worth going if they are going to be unhappy.  Many of us are older and our spouses are too.  If the conference is held in an urban area, they will be too intimidated to venture out on their own, and it increases stress on those of us attending if they do.  In this regard Mystic and New Bedford were good choices and I assume that Oxnard, CA will be too.

  10. If you have any interest in further researching or completing the model, Corothers’ two books are a must.  Particularly helpful are tables itemizing hull features for different vessels so you can at least eliminate some possibilities.  For example, Flying Cloud had a round stern so can be eliminated.

     

    This is not a sailor made model built by eyeball.  The framing of this model required an accurate lines drawing.  It is unlikely that the builder freelanced a lines drawing on his own before tackling this project.  You therefore need to figure out what hull lines were available to this builder that match the hull features and principal dimensions that represent your model.  Other useful references to help you do this would be Howard Chapelle’s Search for Speed Under Sail and his National Watercraft Collection.  

     

    Do you know who built the model?  If he was an NRG Member he might have written about it in the Journal.

     

    Another possibility is that the builder adapted a model kit plan to build the model.  Old model kit catalogs are often offered on EBay.  Look for A.J. Fisher, Marine Models, Bluejacket solid hull kits, not the European POB kits.  Knowing what kit plans were available years ago might narrow down your possibilities, as it will give you an idea of the lines drawings that were available.

     

    What is the shape of the midships section; flat floors, deadrise, etc?  Different naval architects had specific ideas.

     

    Keep us posted on your progress.

     

    Roger

  11. A varnish described as “Light Oak Gloss Varnish” is what used to be called a “varnish stain,” a pigmented varnish.  This is not a product that I would associate with a high quality finish.  

     

    I would first try try applying some clear varnish to a piece of scrap.  You might find that this is all that you need.  True varnishes generally tint the substrate that they are applied to; usually amber.

     

    if you decide that you need to stain it, I agree with Jaager.  Stain separately from varnish.  Oil based stains can be tricky.  They are pigments suspended in a liquid, linseed oil or some sort of synthetic.  Dense, close grained woods like maple, cherry, or pear can be difficult to stain.  Instead of penetrating the grain structure, the pigment just sits on the surface.  The usual technique is to apply the stain, let it sit, and then wipe off the excess.  What usually happens (to me) is that everything just wipes off.  

     

    A better choice would be some of the analine dye stains that do penetrate dense woods.  These come as a concentrate and are diluted with alcohol.

     

    Varnishes come in four levels of sheen-  Gloss, Semi-Gloss, Satin, and Matt.  Try satin first.  If you need more sheen, rub it down and try semi-gloss.  Varnishes can be thinned, usually with mineral spirits to minimize buildup.  

     

    Roger

     

     

  12. Scale: If your scale is 1:48, when you look at your model from a distance of 1ft, it is as if you would be seeing the real thing from a distance of 48 ft, 1:64-64ft, etc.

     

    So the question that you need to answer is how much detail would you be likely to see on the real thing at the distance equivalent to that from which the model is to be viewed.

     

    Roger

  13. Allan,

      Is it possible that the your “false keel” is actually the real keel, structural member, on the real boat.  The ballast hangs from this and the tapered pieces fore and aft are just there to provide a fair shape.  The naval architect has concentrated the ballast near the boat’s longitudinal center of gravity to keep it out of the ends.

     

    Roger

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