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...by Bill Oberpriller. Bill offered the locomotive in kit form between 1998 and 2004. He no longer produces the kit. These pages have been "rescued" from [[File:BillOberpriller and MinnieII.jpg|thumb|right|500px|Bill Oberpriller and his Minnie]]

== Standard Screw Threads and Tap Drill Sizes == ! Tap Drill

...ch centers vertically. There are eighteen tubes in all, 3/8 inch [[O.D.]] and standard commercial IMperial tube is used. ...seen. We have a 4-4-0 3-1/2 inch gauge engine with fifteen 3/8 inch tubes and cylinders 1-1/8 inch by 1-3/4 inch. She is non-superheated but can run lik

...p is not very large being only 3/8 inch x 3/8 inch but the engine is small and with 3 inch wheels it will pump as much water to the mile as a 5 inch drive The pump shown is fabricated from round and square brass and I doubt if any time would be saved if a casting were used.

...designer Dave Gumz. Dave is a life member of the Golden Gate Live Steamers and is one of the good guys. One of those fellows that is always ready to help ...ersion of them in a turret array. That 4 valve array was installed in 1981 and has not required any maintenance in the 4300 miles he put on the locomotive

...kpiece using only a 3-jaw chuck. You insert a block between the workpiece and one jaw, then clamp. ...1 are further broken down as shown in Figure 2. The angle between lines Z and '''OF''' is 60 degrees. The following values are defined:

...num blocks or steel, I've even seen hardwood without bearings; just grease and when you smell wood burning re-grease! ...live steam meets someone see the CVLS tee shirt and asks "Did you know Ave and Chuck?"

Cylinders and Cylinder Heads for the Beginner's Locomotive ...scraping them. The bosses around the bolts should be rounded for neatness and the outside finished to shape.

...hey are built according to specifications, you have to use the right bulbs and number of them, or it'll snap them out fast. ...s through and file out to size. If preferable, a special tool can be made and the metal cut out to size in the shaper after first drilling to holes as be

...nt to be meticulous, however, the three jaw universal chuck is much faster and in most cases the castings can be made to run fairly true by a little exper ...sion. Center drill and drill 3/8 inch for axle, open out with boring tool and ream 7/16 inch to finish size. Follow the same operations for all four whe

...hive.org/web/20070209153853/http://www.ggls.org/ Golden Gate Live Steamers and Archive.org] ...e on a good problem. Back in 1998 I was complaining to Marty that my 'Tube and Slot' propane burner just wasn't giving me enough [[BTU|BTUs]]. He suggeste

...'s pony truck was not tracking straight. I got down on my hands and knees and noticed the pony truck pivot pin was missing. ...ted I run backwards back to Terry Town Station. That worked like a charm, and I didn't derail anymore.

...and reported that they pulled perfectly. Each car has over 2,500 “rivets” and also feature handmade turnbuckles.]] From "Stack Talk", September and November 2014, <i>[[Houston Area Live Steamers]]</i>.

...rizontal, some requiring a slot in the tank top for the handle to work in, and all requiring a detachable section of the tank top to install the pump. ...1-1/2 inch in size. The pump is held to the tank bottom by a 1/4 inch nut and a lock nut around the delivery union with a thin rubber joint to make the t

Here is a power reverse unit, patterned after the Franklin type. Designed and and at boiler pressure. Under these conditions it is very smooth in operation

...son for this is the fact that the motive power is what gets into our blood and some of the less romantic things of the high iron are slighted in more than ..., but one that looks pretty good; and best of all will stay on the rails. And, I might add, do a bit of stopping when you want to.

...to bore the axleboxes so that if in error one error will be common to all and so be canceled out. The jig is a piece of 1/4 inch steel plate with a slot ...pigot. With the other end of the side rod mounted on the other dummy axle and holding the rod against the end of the bush turn the same till the eased do

[[Adjustable Drill Jig]] ...ale and needle scriber and after the holes are drilled you can insert pins and check them, but you may have to make several tries, which takes a lot of ti

...-3/4" gauge steam locomotives and to enable me to reply to these inquiries and to enable other live steam friends to obtain the information I know of no b ...rd, and must be suitable for either indoor or outdoor locomotive running. And if, as he expected, alcohol was to be the fuel, it must not be a "poison ga

.... Now rivet a couple of strips of one-fourth by one-fourth inch steel one and one-half inches long on each side of the extension going down between the f ...urth inch. Leaving one-eighth inch thick flange, run a round nose tool in and turn a gentle taper (by eye) climaxing at about three-eighths inch diameter

...t operation of heavily loaded trains, especially on grades. Even starting and stopping are difficult under such circumstances. ...uilt. The factors which are not so simple to improve on are rail material and wheel or tire material.

...ll aware of the importance of lubrication being furnished to the cylinders and valves of their small locomotives, particularly so when superheated steam i ...ricator is made by placing a small oscillating cylinder inside a container and operating it from some moving part of the engine through a ratchet drive th

...lthough rather clumsy looking, are easy to make and effective in operation and in their position down under the cylinders don't show too plainly anyway. ...hole marked '''X''' doesn't do anything, but you have to go through it to drill to the cylinders.

...re worth. It is interesting to note how closely Van Brocklin's dimensions and mine agree. ...and, for the smaller sizes, it is well to use a larger piece of drill rod and turn down the distance K, or a little more, to dimension J.

...lock. As they are seated a friction force develops along the whole length and diameter of the pin which locks the pin in place. ...be computed by multiplying the nominal length of pin by the factor 0.2083 and subtracting the result form the basic pin diameter.

...s itself to producing a thread right up to a shoulder. Here's my solution and it's not restricted to just valve motion pins. ...of thread desired. This will give you full threads right to the shoulder and insure that the bearing portion of the pin seats tightly against the tapped

...Pressure gauge|pressure gauge]] which scales two or three feet in diameter and a foot or over in thickness. The difficulty lies in the fact that a reliable gauge is essential and that model makers have found by experience that it is difficult to make, or

...as well as the Baltimore & Ohio railroad. He was a Professional Engineer and a superb draftsman. ...0-6-0; a 1 inch scale 4-4-0 and 4-6-0; a British "Single" in 1 inch scale, and various other models.

...[[Model Engineer]] written in 1956. This is by far one of the most complex and, shall I say, a bit hard to understand at times, projects I have found on t ...middle of February 2014. I was starting to model the mechanical lubricator and in doing a little research ran across the IBLS website. I thought you might

...to insure a constant supply of oil to the 3/4 inch diameter piston valves and pistons. However, it can be made as a single cylinder unit for those who l ...mselves pretty well, I believe, but a few tips on making the various parts and assembly might be in order. I'll just mention the points that need some wo

...ch threads allow for smaller size nuts in relation to tube sizes, and taps and dies are easily obtainable. A boiler backhead using these fittings looks e ...ittings will aid in getting straight length. Leave ends of bent tube long and cut off to suit fittings, then silver solder ferrules on, not forgetting th

...nger capable of performing machine work. He has given the FN project to me and I am now in the process of continuing with the build. ...s and some brake parts. Currently those are in a box awaiting my attention and will be presented to you guys when their turn comes up.

...ry often have odd size drivers that are just off "store boughten" castings and we are confronted with one of two choices. Select a near size wheel or bui ...e of evenings that will reward you for time spent in a good looking driver and to scale as well.

...xle boxes and pilot touch frame side pivots make for good tractive effort, and on steel track tests with ball-bearing trolley she will pull 400 pounds, or ...were stopped up with brass plugs. This has made no difference to steaming and gave a better depth of fire, about 1-1/2 inch to top of grate.

...building a [[Building a Kitsap Caboose|Kitsap Live Steamers caboose kit]] and decided to add a fully operational [[Air_brakes#Balanced|balanced air brake This is my first attempt at building operating air brakes, and I am quite pleased with the results. Air brakes will certainly be added t

...ard. Each new part made it more apparent something would have to be done, and soon. ...on plus finding suitable material evolved the hydraulic lift we now have. And it literally almost fell together. Compared to build a locomotive, that is

== Coupler, Chain and Hook Arrangement == [[File:Coupler Safey Chain Drawing cropped.png|thumb|center|600px|Coupler and Safety Chain Arrangement]]

[[File:Tap magic 2.JPG|thumb|right|200px|Typical cutting fluid in convenient size for ...ed during the cutting operation, and extends the life of cutting tools and drill bits.

Small [[Water gauge|water gages]] with 3/16 inch and 1/4 inch [[O.D.]] glass tubes as ordinarily used to maintain close to scale ...uently as the water gage itself and as they usually make a mess of the cab and boiler head, they should discharge into a trough piped to the outside.

With the angle cock to the engine open and the last angle cock in the train closed this provides the sealed train line ...ens to be 2psi". So in this case the front of the cylinder has 38psi on it and the back has 40 psi. This in combination with the fact that the front side

...Danbury Railway Museum (CT). The photo has been "enhanced" with the labels and "X-Ray vision" of the injector.]] ...uel intake, boiler’s steam pressure, the locomotive’s speed and direction, and a whole lot more are within easy reach of its crew.

...alloy melts if the sheet becomes overheated due to low water. It blows out and extinguishes the fire. .... Modify plug as shown and soft solder copper rivet in place. Install plug and test for leaks.

...viewtopic.php?f=8&t=101511&p=333025#p333025 "Question about 180 degree tap drill point", <i>Chaski.org</i>] ....org/homemachinist/viewtopic.php?f=8&t=104774 "Machining model pipe unions and valves", <i>Chaski.org</i>]