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Build this model fore and aft compound steam engine
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BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
BUILD THIS MODEL FORE AND AFT COMPOUND STEAM ENGINE
If you're a model engineer or a machinist then The Home Shop Machinist is familiar to you. If not, then maybe you know about Live Steam. Maybe Projects in Metal is another thing you've heard of. Rudy's wrote in all of them. If anybody knows about machining, it's Rudy.
This Featured Project from "The Shop Wisdom of Rudy Kouhoupt Volume 1" is just one of the 25 articles you'll get with the book written by the man that's done it all. "The Home Shop Machinist" , "Live Steam", and "Projects in Metal" have all been blessed with articles from Rudy.
Several correspondents have expressed an interest in building a compound steam engine. This interest encouraged the design and construction of this trim little fore and aft compound. Everything in the engine is fabricated or carved from stock metal forms, completely eliminating the need for any castings.
First thoughts about this project led me to design the engine as a non-reversing type. When the drawings had been finished and the construction work was about a third done, a friend of mine went out to a steam show in the Poconos with me. At the end of our day at the show, we sat over dinner talking about the new engine.
Afterward, Eddie looked at the drawings and what was already done on the engine. He is a fine machinist who has built quite a few engines from my designs.
After examining everything, he expressed a desire to build one but said he felt it should have a reversing mechanism. There was still plenty of work to do before getting to the valve motion, so I agreed to consider it while working to that point.
As you can see, a reversing mechanism was designed for the engine. It increases the amount of work in the project a bit, but it adds much to the pleasure of building and running the engine.
The prototype engine is, in fact, a very sweet performer. As a shelf model, it is a complete modelmaker's project in its own right. Installed in an open river launch, it will satisfy the most fastidious observer with regard to both appearance and performance.
You're going to find entirely new articles written by nobody else but Rudy Kouhoupt. You haven't seen the projects, but you definitely know the caliber of work this guy is going to give you.
Here Rudy introduces each of his helpful and fun projects.
Micro Machine Table For Mill and Lathe
It is probably safe to say that a majority of home shop machinists get their private shops going by purchasing one of the popular small size machine tools.
For some, it is a matter of necessity, while others see the smaller machines as a relatively inexpensive means of getting their feet wet in machine shop skills.
Machining Techniques You Can't Live Without
Spur gears are the type on which the teeth are cut parallel to the axis of rotation of the gear. They make up the simplest form of gearing. Furthermore, spur gears are the most widely used type for transmitting power from one shaft to another which is parallel to it. As power is transmitted through spur gears, the rotation of the gear shafts is positively synchronized.
The simple nature of spur gears means that they can be produced in the home shop with relative ease.
The calculations involved in preparing to cut a particular spur gear are straightforward. Anyone who understands the basic principles of spur gears should have no difficulty going through the calculations. While accurate work is called for, it is not difficult to make your own spur gears following the procedures shown in this article.
Learn how to cut spur gears, build your own dividing attachment, mill on a drill press, and build an automatic parallel in this article!
Build this Simple Steam Engine!
With the acquisition of a few tools, there usually comes a desire to put them to use on a project other than making more tools and accessories. Small engines, of one sort or another, make good projects for construction in the home shop since they give an outlet for doing reasonably precise work. Any home-built tools or accessories are certain to be useful on such projects, giving the builder the satisfaction of putting them to the test while further developing his skills.
Build This Horizontal Stationary Steam Engine
Building a small steam engine without the use of castings is an interesting exercise in machining and other shop skills. Particularly so, if pains are taken to detail the finished engine in such a way that is has the appearance of having been built from castings. In designing the horizontal engine, I have attempted to do just that.
No castings were used in the original model. Even the curved-spoke flywheels were built up. A variety of metals went into the original, depending upon the nature of the metal and the function of the part to be made from it.
Plus some more projects about general machining
Build This Model Overcrank Engine
All double-action steam engines require some sort of guide mechanism to keep the piston rod from being deflected and bent when the engine is running. As the load is taken up, it is a natural result of the angularity between the piston rod and the connecting rod that force is applied to the piston rod in a lateral direction.
Many steamers have some sort of crosshead and guide bar arrangement in which the guide bars give lateral support to the crosshead, which is attached to the piston rod. By supporting the crosshead and guiding its travel in a linear path, the guide bar and crosshead arrangement prevents deflection and bending of the piston rod.
There are other means of accomplishing the same end, however. The small overcrank engine does not have guide bars and a crosshead. In their place it has an assemblage of links, or levers, which are anchored by and rotate from two fixed points.
The lengths of the links and the positions of the anchors and bearings are all-important to the motion. All of the dimensions are laid out in keeping with geometric principles, so the resulting motion of the links interacting with one another is a straight line motion produced at one point in the assembly.
The linearly traveling point in the guide assembly is designed to coincide with the wristpin and is attached to the wristpin. Thus, all of the necessary conditions for accurate and safe guiding and support of the wristpin in a straight line are fulfilled by the assemblage of links.
If the accompanying photographs, in two dimensions, give you the idea that this guide motion is a fascinating thing to watch while it is running, you are sure to get an extra charge from seeing the real thing working in three dimensions. As I worked on the design phase of this engine, I became evermore taken up by the desire to see it run. This made me impatient to get the chips flying. I hope you share my enthusiasm for the design.
One general idea is worth mentioning and bearing in mind; work carefully, so that all parts fit well and are free-moving. This does not mean sloppy fits: it does mean accurate fits. I say this because free movement, without binds or tight spots, is essential to slow operation of any engine. The beauty of this particular design, with its unusual guide motion, is most fully appreciated at low running speeds where the eye can follow the movements of the various parts.
None of the parts are difficult to make.
Build this Model Reversing, Upright Engine
Upright engines are well suited to any installation in which the floor space is limited. While their construction may take any one of a number of forms, I have selected the form in which the cylinder is mounted on double standards of plate construction for the model engine to be presented here.
Not only does the plate standard form of construction provide a solid cylinder mounting, it also permits the crosshead guides to be installed in a rigid position. In overall construction, then, the model engine is solid.
Having designed the engine with a fully supported crosshead, I thought it would be a good idea to incorporate a valve mechanism to permit reversing the engine.
The ability to reverse adds versatility to the design and makes it more interesting to operate, as well as taking advantage of the fact that the crosshead is properly guided and braced for both directions of rotation.
Specifically, reversing is accomplished by a slip eccentric driven by a slotted driver. The eccentric position is controlled by a drive pin engaging a curved slot in the eccentric driver.
A drive nut secures the position of the eccentric relative to the driver. Valve gears of this sort have been used on full-size launch engines, but I don't recall having seen this exact arrangement on any model engines. The vital statistics of the engine are as follows:
You thought that was it? Here's more!
Micrometer Faceplate Attachment
Building Your Own Dividing Attachment
Any one of these projects is worth the small cost of the book! If you're just learning about machining or you're an old pro this book has the information you need and it belongs in your head. Now's your chance to get ahead - don't miss it!
8-1/2 X 11" Hardcover, 228 pages, profusely illustrated with photographs and working drawings.
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