Monday, November 30, 2015
Sadly Birk Petersen Passed away Wednesday, November 25, 2015 Birk loved building steam engines, small scale models, and whimsical creations of his own imagination. He loved showing his amazing collection to visitors. Some of Birk's favorite visitors were kids, he enjoyed watching their enthusiasm as they turned cranks, got their hair to stand on end, and dumped out a whole scoop of candy from the steam shovel.He also loved sharing his creations with his blogging community and friends on the internet from all over the world. This blog only showcases a fraction on the many wonderful creations the Birk has built over the years. He was and inspiration to us all. Please take time to browse through this blog. Nothing would make him happier than having others enjoy his work. Feel free to leave comments and memories below.
Posted by Kactiguy at 9:28 AM
Sunday, November 15, 2015
That grasshopper has now been immortalized forever in bronze.
Can you imagine an 82 year old man messing around with something as silly as casting a grasshopper in bronze?
The two pictures showing the heating arrangement and pouring were simulated to give you and idea of the process. Working alone I could not photograph that part in action.
Friday, October 30, 2015
If you note the brushes are set up like the original, so they can be rotated around to find the place of greatest efficiency. The field magnetism is provided by a stack of ceramic magnets clamped between the pole pieces. The armature is wound with regular magnet wire.
The generator was under construction during most of the month of October, and was finally completed yesterday. Below is a short video of it doing it's thing.
Monday, October 5, 2015
Below is a short video of it in operation. In the video the shafts are offset slightly over 1/2". As you can see it works very free and easy. It is just so much fun to turn cranks.
Thursday, October 1, 2015
Monday, September 21, 2015
A coat of paint and a walnut base and it was finished as seen in the first picture.
It will rotate in either direction, and by turning the crank at either end. I was surprised how smooth it operates.
Tuesday, September 8, 2015
The water supply for this model simply comes from a plastic bucket. A prototype would be placed near a stream.
Sunday, August 23, 2015
Wednesday, August 12, 2015
Below is a short video so you can see it running.
Sunday, August 2, 2015
Once I was satisfied with the operation of the balls rolling down the track I moved on to making the runners. They too were made from hard maple. Starting with a simple sketch that I had drawn for a pattern, body parts were blocked out with the scroll saw, and then shaped with a Dremel tool. Hip and knee joints were milled with the milling machine.
Painting of the runner figures was with tole paints, and they were assembled with heavy duty dressmakers pins.
Finally after being at it for about 3 weeks the runners were ready to go for a run. Right lively bunch. Take a look for yourself.
Thursday, July 9, 2015
Finally after some very frustrating hours of adjusting it is working as it was intended during the concept stages. Some of these simple things can be as difficult as real machines to get operational.
Wednesday, June 3, 2015
Yesterday the final parts were completed and assembled, and of course it needed to be tested with power. Connected to a 6 volt battery it ticks over at a nice leisurely pace. Take a look at the video.