MINI WEED

Another model project was completed yesterday, August 1st 2012.

Inspiration to build it came from my little friend Max Francis. Last Christmas Max's grandpa Larry gave Max his childhood toy Weeden Steam engine. Out of his many grand kids, Larry said that Max was the "one" who would appreciate and take care of it. These are now real collector items and even I would like to have one. However the best option for me is just build it myself. Working from images of Max's engine, emailed me by his father Guy, I constructed about a 2/3rds size replica.
    Shown below are a couple images showing the new model next to the old original Weeden engine.

And shown below is a video of it running on compressed air. Although it is capable of being steamed, it is much quicker, easier and cleaner running them on air.

                                         Hope you enjoyed looking at it.


Max got his Weeden up to steam next to Birk's Mini Weed. They look great together.

EGG TIMER for the person who has everything

 Ten years ago there was a construction article authored by John Wilding published in the English Horological Journal on building a six minute weight driven pendulum operated egg timer. Knowing that I liked such things fellow hobby machinist, Pete Larsen shared the article with me, however it just sat dormant until a couple weeks ago. It was a fairly simple project and a pleasure to build. It is equipped with an unusual MacDowell single pin escapement that is interesting to watch. It is self starting and with pendulum bobs both above and below the pivot it acts somewhat like a balance wheel. It is easy running and requires only small weights, but they fall fast. About 40 inches in six minutes. A suitable bell could not be readily located So one was spun out of 1/16" sheet brass. That turned out to be a day long project in its self.

Now that it is finished I'm not sure how to use it. Do they have Egg Races?

Timing eggs or not, it is interesting to watch. Take a look.

Robinson Type Hot Air Model

Another model has just been completed and is ready to add to the display. This one is a model of a Robinson type hot air engine. It is not an exact scale model of any particular prototype, but a very close approximation.

Building it as I did, it was possible to pick and choose from various materials on hand. Construction was sort of hybrid because some parts were fabricated, machined from solid material, and some were castings.

I wanted to put lettering on the main casting, but raised letters on the side of a pattern will not lift out of the sand, so I used a method used by bell founders. The lettering was attached to a stick and after the pattern was lifted out of the mold, the stick was put down inside and gently pressed into the sand.

The results were not perfect, but satisfactory, as can be seen by the rough castings.

A couple more in process pictures. The hot cylinder was made from the end of a one pound propane tank. The displacer from a tin can. The stove was fabricated from sheet metal. There was a limited amount of head room for the burner, so I made a alcohol fired penny burner that works just beautiful as you can see in the video. The penny burner is a light weight backpacking stove for campers built out of the bottoms of a couple aluminum cans. Instructions for building one can be found on the internet
     It is an excellent running engine. I knew it would be even before firing it up, because it turned so free and easy, and yet had a little bounce from compression. Here is a short video, take a look for yourself.

Yard Queen

Yesterday a new yard queen came to our yard as shown above surveying her domain. She appears to be pleased, and lets hope it stays that way, She is mostly an assemblage of scraps and old machine parts that otherwise would be destine for the remelt furnace.

GOOD GUYS

A new device has just been completed that I plan to use to rid the neighborhood of "bad guys" I do not plan to shoot a shot. One look at the thing and they will either leave in a hurry, or else turn into Good Guys.
     Actually it is a one and a half size scale model of  the Civil War vintage Remington .44 Army Revolver that was introduced in 1863. Although it has functional parts, it is not intended to be a shooting gun, simply a conversation piece for people to heft and chuckle about. It weighs 12 pounds, and takes a pretty stout arm to hold it in shooting position, and even then it is difficult to reach the trigger. Caps of that size are not available, and I did not drill the nipple holes, so it would pretty difficult for someone shoot it.
      The barrel was machined out of a solid bar of #416 stainless steel. The cylinder SAE 1045 steel bar. The trigger and hammer, etc. 1/2" steel plate material. The main hammer spring from a real heavy duty power hacksaw blade. The grips were carved from black walnut. The reason for these choices is because that is what was on hand.

Building it was quite a process. First a wood pattern was made to form a sand mold, into which was poured melted brass. As you see the first mold did not fill completely, so a second mold was made and it did fill. Casting has it's little frustrating problems.

Then started the machining process, and I'll show just a couple operations. First the frame was set up in the lathe with a special fixture and the barrel hole bored and threaded.

Then to the milling machine where much of the inside space was milled out.

But the milling cutter could not reach all areas so the shaper was put into use. Shapers are obsolete by today's standards, but there are still some operations that they do very well. Space was really tight, but I made it.

Again the shaper being used to square up the trigger hole.

 A few of the parts as work was progressing.

 Not knowing where to put it I finally hung it over the fireplace in the display room. After all they use to hang the old Kentucky Long Rifles over the fireplace.

LITTLE ERIC NORDEVALL

In 1856 the Swedish steam ship named the Eric Nordevall sank and laid on the bottom of a lake until the 1980's when divers found it. A replica, the Eric Nordevall II has been constructed, and there is a lot of information, videos, etc, about it on the Internet if you care to look it up. The ship was a side paddle wheel design powered by two engines. This model engine designed by Mogens Kilde is not a scale model of the originals, but was inspired by the original, and has a number of similarities to the original. A construction article was published in The Home Shop Machinist in 2008. It was fun to build, and is a most interesting little machine to look at and watch in operation. Much to my surprise it took off running the first time air was applied without any adjustments or anything.

Display space is getting scarce, but I found a place to squeeze it in, it only has a foot print of about 2" x 4".

Cranky Desk Toy

A Cranky New Desk Toy has just been added to the collection. It has a very soothing effect on "cranky" people, like me.

Half Size Cretors Pop Corn and Peanut Eengine

About a hundred years ago Cretors Co. in Chicago built a line of vending stations from small stationary ones that might be placed in buildings, to larger ones that were mounted on wheels and could be transported to places of public gatherings, like fairs, etc. An illustration scanned from an old Cretors catalog, above, shows a typical wheel mounted unit. These vending units were equipped with small steam engines that naturally drew attention of passers by, but they also powered the peanut roasters and pop corn poppers. Over the years these engines have become very desirable collector items, and popular projects for model makers.

During the early part of January I was able to do a little trading for a copy of a set of drawings, and about 3 weeks later had my own half size Creators model.

I decided to go half size and machine most of the parts from solid material rather than purchase a casting kit, which are rather costly. For a size reference the fly wheel is 4".

I did need to make patterns and pour castings for the base plate, crankshaft support bearings, and fly wheel. Shown above during the pattern making process.

Here are the gears for the governor. Tiny little things. They were machined out of a sprue left over from casting the fly wheel.

And finally shown below is a video showing it doing it's thing---amusing people. It is classical engine, but simple and straight forward as steam engines go. Not difficult at all to build.

Deck Gun

My little 7" x 10" mini lathe was starting to get despondent from lack of not enough use, so in order to cheer it up I machined a ships cannon on it. Kind of small, but that is OK because it does not take up much display space. The tie rods and eye bolts are all size #o-80, which for me requires a 10 power magnifying glass to examine the threads. They were just fine.
Actually I use that little lathe quite often. There are some things it does very well. Holding and threading that size fasteners is one of them.

Double Head Bolt

I made a double headed bolt as seen above, and I think I got it right. The nut fits well and turns freely along the threads. The problem that I have encountered is that I cannot figure how to get the bolt in a hole. Got any ideas????

FIRST MODEL OF 2012

The first model of 2012 was completed yesterday, Jan 5th. That is not quite January first, but is might still qualify as a New Year Baby. The plans were authored by Henry Frostick and published in the December 1961 issue of Popular Science Magazine. It is not a scale model of any particular prototype. The above shows it while under construction. In contrast to many of my recent models, this one was constructed mostly of steel and stainless steel. Brass was used only for the moving or wearing parts. The pattern on the block is called "engine turning" or "jeweling". It is done by pressing a spinning rubber bonded abrasive against the metal over an over again, indexing the part slightly each time.

It has already been given a spot on one of the shelves in the display room, and it seems to fit in very comfortable, just like it belongs there.

Like most open steam engines it has some interesting motion. Take a look at this short video

Cord Wood Saw

Yesterday, December 22, a 1/10th scale model of my father in law's cord wood, or firewood saw was completed. This was a rather simple model that was under construction a day or two less than a week.
In order to make the blade a blank disc of about 20 gauge sheet metal was clamped between a couple supporting discs and 80 teeth milled in with a "V" shaped cutter bit as shown above.
As a point of interest the blank was cut from the same piece of sheet of metal as was used to make the whimsical leg that I made and put in the flower bed last year, and originally it was the bottom of an evaporator cooler. (swamp cooler) I cherish every piece of metal I can get hold of to make things out of. The material for the angle iron and flat bar in the frame work was cut from the metal from an old washing machine or drier. The brass bolts that fasten together are a tiny size"0" and were ordered from Micro Fasteners in New Jersey.
Shown below is the father in laws original old saw that is now peacefully retired in the yard and only serves as a decoration, and reminder of days gone by.

8 Pound Baby Engine

Yesterday, December 11 2011 a new baby engine came to life at our house, and started chugging away. The engine was built from plans published in Popular Science Magazine in 1947, the year that I turned 14, but of course I did not have skills or equipment to build engines at that time.
The author of the plans was CW Woodson who was a prolific contributor of machinist articles back in the forties. He was an artiest by trade, machining was his hobby. Apparently iron castings were available for the engine at the time of the printing, but certainly not now. So I made wood patterns and poured castings in brass. This model was under construction for 5 weeks.
I worked from plans copied from original magazine pages, but believe it or not those old Popular Science magazines are still available for viewing on Google Books. To look it up if you are interested, type in Popular Science 1947, CW Woodson. You even get to see all the old ad's etc., a wonderful place to reminisce.

Cement Mixer

October 30 2011 marked the completion of a model cement mixer. It was pleasant change after building several model engines. The inspiration to build it came from a plan that Rudi Kouhoupt had published some years ago. Although this model resembles Rudy's mixer. I did not follow his plan, and this one is about 25% smaller, and several construction details changed. This model ended up about 6 1/2" high as can be seen in the picture below.
Friend Mike Nay suggested that the mixer needed a companion wheel borrow to go along with it. About 4 days later it had that companion. With no prototype to copy it was built from memory, of ones seen in the distant past.
As a point of interest the ring gear was machined from brass plate and then parted off.
The bowl was machined from a solid piece of aluminum. All of the flat sheet metal parts for the mixer and also the wheel borrow were cut and formed from the sheet metal off an old washing machine .

James Watt Engine Model

After being under construction for over two months a model of James Watt's first engine has just been completed. This is not an exact scale model of that first engine built in 1788, but rather a representation that displays some of the features, like the sun and planet cranking gears that were used to avoid patent infringement. The original prototype had many firsts. Like it was the first engine to use steam under pressure to move the piston. It was the first steam engine to produce rotary power. It was the first engine to be rated in "Horse Power". The first to have the speed controlled by a fly ball governor. It was actually the beginning of the industrial revolution. James watt and Matthew Boulton formed a partnership, and after building this first engine, built hundreds more that were used in the British Isles and Europe. This first engine, by the way powered polishing machinery in Mathew Boulton's factory for 70 years. That is a long time for something of that vintage. The engine is now preserved in the Science Museum in London. Look it up on the Internet, there is lots of history about it.

Shown below are a couple short videos, one showing a close up of that governor that actually controls the speed of the model, and the other more of a look around as it is running.

Ding Dong

After building several model engines this year I figured it was time to work in another metal sculpture. The inspiration for this one came from one of several pictures that Guy sent me from Disney Land while he and his family were vacationing there. (Shown below) While there are some similarities it is not a copy. The bells and Friar heads were cast from bronze. Some of the small decorative pieces from aluminum, and the rest is made of steel



If the cord is pulled slowly it produces a pleasant ding dong sound.
Now being equipped with both bells and whistles, our home is a pretty snazzy place.

Spiritual Living

Gardening hint of the month: Growth Stimulants

The Begonias seemed to be a little puny this year so I made a trip to the Morgue and got some fertilizer. It is cheap and they have plenty. They will give you for free, all you want of people who do not pay their bill.

The Begonias ought to really start growing now, maybe even pass up that big green flower.

Actually the inspiration for this one came from the cover picture of a book that I had ordered.
It looked like someone had been smashed by an old cast iron bath tub.
I searched for a manikin, but when I found how costly they were, I decided t cobble something together myself. It is built out of the bottom pan of an old swamp cooler.

Hopefully we a can find another hint for next month. Until then Happy gardening!