IMG_8729_1_1Stainless steel piston and rod.
Date: 10/07/2010
The piston and rod machined from a stainless steel bolt with the cylinder in brass behind it.
IMG_8716_1Piston from a bolt.
Date: 10/07/2010
The piston was machined from a stainless steel bolt.
IMG_8741_2Flywheel.
Date: 10/07/2010
The flywheel was machined from a piece of steel pipe I had lying about. The middle part is 3mm plate. I machined one half of the inside of the pipe a slightly larger diameter so the centre plate could be pushed in hard up against a shoulder to ensure it was flat. The shaft is from an old printer.
IMG_8740_1Machining the flywheel.
Date: 10/07/2010
Once the shaft was soldered in place I did a quick pass on the lathe to ensure it was true.
IMG_8819_1Boiler.
Date: 10/10/2010
Boiler tube made from 2 inch copper pipe. I cut it with a hacksaw then file and sand the ends flat.
IMG_8820_1End caps.
Date: 10/10/2010
The boiler end caps are made from copper again. A piece of the same tube as the boiler is cut and then annealed and flattened.
IMG_8821_1Flattened tube.
Date: 10/10/2010
The tube after annealing and hammering flat.
IMG_8824_1End plate former.
Date: 10/10/2010
The end plate former is a steel pipe with a plate welded to the end with a 8mm threaded hole through it. The diameter is just smaller than the inside of the boiler tube minus twice the thickness of the copper plate. The discs are cut to be 12mm great than the diameter of the boiler to allow for the flange. An aluminium washer goes between the bolt and the copper disc.
IMG_8827_1Making the end caps.
Date: 10/10/2010
The disc is bolted to the end of the former which is held in the vice. The flange is then carefully tapped down.
IMG_8830_1Annealing the flange.
Date: 10/10/2010
The hammering causes the copper to work harden. To soften it you heat it to red heat then cool it. I quench it in a bucket of water to save time.
IMG_8835_1Flanges formed.
Date: 10/10/2010
The flange fully hammered flat.
IMG_8841_1Fluxing.
Date: 10/10/2010
The end cap is heavily fluxed before soldering.
IMG_8842_1Silver soldered.
Date: 10/10/2010
After silver soldering the end cap in place.
IMG_8845_1Boiler.
Date: 10/10/2010
Boiler before pickling.
IMG_8847_1Pickling.
Date: 10/10/2010
The boiler in a bucket of water with citric acid dissolved in it. This removes all the flux and soldering residue.
IMG_8852_1Throttle.
Date: 10/10/2010
The throttle valve showing the lever.
IMG_8853_1Throttle.
Date: 10/10/2010
The throttle valve showing the tension spring.
IMG_8840_1Finished end cap.
Date: 10/10/2010
The end cap ready to be pushed home.
IMG_8825_1Making end caps.
Date: 10/10/2010
Disc before hammering.
IMG_9118_1Brass top hat cable grommets.
Date: 11/20/2010
Brass top hat cable grommets.
IMG_9122_1Test set up.
Date: 11/20/2010
Test set up.
IMG_9125_1Linkage and servo cover.
Date: 11/20/2010
Linkage and servo cover.
pidoutput1PID output showing RPM vs samples. Settings were P_Param = 3, I_Param = 0.25. You can see how the output oscillates about the set point.
Date: 11/20/2010
PID output showing RPM vs samples. Settings were P_Param = 3, I_Param = 0.25. You can see how the output oscillates about the set point.
pidoutput2PID output showing RPM vs samples. Settings were P_Param = 1, I_Param = 0.5.
Date: 11/20/2010
PID output showing RPM vs samples. Settings were P_Param = 1, I_Param = 0.5.
IMG_9215_1
Date: 11/29/2010
Completed detail.
IMG_9218_1
Date: 11/29/2010
Completed detail.
IMG_9219_1
Date: 11/29/2010
Completed RPM meter.
IMG_9220_1
Date: 11/29/2010
Completed meter.
IMG_9221_1
Date: 11/29/2010
Plinth pinstriped and coil.
IMG_9222_1
Date: 11/29/2010
Engine and throttle.
IMG_9224_1
Date: 11/29/2010
Throttle.
IMG_9225_1
Date: 11/29/2010
Servo cover.
IMG_9227_1
Date: 11/29/2010
Drawer containing Arduino and batteries.
IMG_9228_1
Date: 11/29/2010
Engine.
IMG_9229_1
Date: 11/29/2010
Completed.
IMG_9234_1
Date: 11/29/2010
With an LP on the platter.
IMG_9235_1
Date: 11/29/2010
Meths burner.
IMG_9246_1
Date: 11/29/2010
Hooked to my stereo though phono preamp.