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Wooden model steam skiff, with scratch built oscillating engine and boiler.

Good information. I have been test running my oscillating engine in my little boat. It lacks power. Probably a combination of problems I'm thinking of re-doing the cylinder to double acting, as well as insulating the boiler and steam line with string and lagging. Tips on increasing power...

Nice work

Try turning the lights down low and attempting to start it - maybe the plug wire is arcing- on a nearby part of the engine

At first glance it appears to be a Philip Duclos design called the odds and ends hit or miss engine from home Shop Machinist magazine. I can’t remember what spark plug he used in that engine. Looks larger than 3/8-24 which is used in many older model engines. You could try a small weed...

looks like a spring winding machine??

Interesting! I’m thinking about building a miniature inertia starter for a single cylinder model engine- need to figure out the gearing and flywheel weight.

The July/August 2007 issue of Model Engine Builder magazine has an article on valve timing by Dave Bowes ( inventor of the EVIC engine). “A Few Thoughts on Valve Timing”. it is an excellent break down on the operation of valves a cam’s for model engines and it has diagrams too!

Thank

I don’t know what an open loop is or what pin does what

Maybe this is my problem? I don't have any special parallel port chord, just the regular one for that computer, I think it's for a printer. To drive the Sherline controller I will probably have to buy a UC100 parallel port adapter?

I have a Sherline CNC mill with the Sherline controller box.

OK thanks for the info

If you have some space, even a 1 car garage and a workbench, the best way to build any engine, and learn is with a small lathe. You can often pick them up pretty cheap on Facebook Market place or ebay etc. I started with a Sherline lathe, it's a true lathe although limited in the size of...

Speaking of Rowland MFG company, does anyone know if they still sell plans for the "RMC Scratch built 1930's engine" ? its a blocky looking horizontal four stroke on a flat cast iron plate. Very simple design. There is a YouTube video of it running, with links to the RMC website. ...

I'm totally new with CNC, do you have to purchase Mach3 to get a workable download? Is the free version just a sample screen shot or something that won't actually run the mill?

Just one more thought, do you have to pay for a program for it to really work?

I need some help understanding Mach3 software. Recently I purchased a used Sherline CNC mill. To use it I have an old desktop running Windows 7, downloaded Mach3 free version from the web and it comes up on the screen and, The mill's XYZ motors are on but nothing happens at all. They just...

Looks awesome. I've often thought of building a scaled down version with a 1 inch bore.

Yes, Look for the 1936 issue of Popular Mechanics magazine, all the issues are posted online. The first part is in the October issue and the machining part is in the November issue.