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Usual question: where are you located? Dave The Emerald Isle

Anyone wanting to build an International M, but can't do the castings, Wismer Machine Company sell/sold castings and various other small bits for a 1/2 size engine. (Like many other suppliers, may no longer be in business. The model side was just a sideline to the main machining business.)...

Do you want to build a full size model engine? How about a Parsell and Weed 1/4 h.p. gas engine? The engine was designed to power a home workshop lathe. There is/was a book produced by Lindsey Publications entitled Gas Engine Construction. Originally written in 1900, it describes how a...

I'm currently working on a set of Myers castings that had been lying under my bench until they had collected enough dust to ensure they had matured sufficiently. The major alloy castings have severe pattern shift that have warranted much use of files and J B Weld to eliminate. I haven't had...

Malofix I see you are in Turkey. Are you in Istanbul, or close to there? If you have not visited, seriously consider seeing the Rahmi M. Koç Museum Apologies for the off topic content of this reply. Dave The Emerald Isle

Although Teflon is a good material to work against brass, you may find it tricky to machine. The table given in the above reply refers to steam engines (see the end note). For compressed air, I don't think you would have any problem with aluminium. Mild steel would also work, but make sure...

My railway knowledge is scant, but I seem to remember that the 4 cylinder Southern Railway 'Lord Nelson' class designed by R.E.L. Maunsell had cranks set at 135 degrees to reduce hammer blow. Dave The Emerald Isle

If there were any cheap materials that worked on steam and air, I'm sure that the model engineering fraternity would have embraced them by now. For smaller engines, bronze is a classic material, but gets way too expensive for the larger scales where cast iron is the material of choice from full...

I sort of remember John Bogs explaining how to do this. Basically, in the milling machine hold your embryo disc on a horizontal axis in a rotary table/dividing head and using an end mill plunge down on the perimeter of the disc to the depth of groove. Rotating the disc cuts the groove. The...

Thoughts from the other side of the pond. TCT tools are very useful for getting under the skin of castings. If using insert tooling, your choice will probably be between CCxx or TCxx shape inserts. Over here, CCxx are very popular, but on your side, TCxx may be more popular. Popularity could...

A couple of old war stories: I started life in the British merchant navy and as a deck cadet, we were expected to know a bit of what happened below decks. So, into the crankcase of the Doxford engine I was sent to undo the big end bolts and nuts using a 7lb short handled sledge. The engineers...

Hi Ved I like your design - it looks very interesting, so I thought you might like to see something akin to a swash plate engine. (You no doubt realise mine is Not a swash plate engine). You are correct, the air inlet is a rotary valve and the exhaust is through the centre of the main shaft...

Here's a video of it running. Dave The Emerald Isle And here's a video of it running. Dave The Emerald Isle

Some years ago Cap. Jerry made what he called a Weeble Engine. There were no construction drawings, but there was sufficient information given to be able to construct one. Here is my version: Dave The Emerald Isle

See my reply above Dave The Emerald Isle

Basically, when an engine is running slowly, the ignition is ******** and as the speed of the engine increases the ignition advances automatically. So, when at idle or low revs, the ignition will fire at about 5 - 10 degrees BTDC. As the engine increases speed ignition may advance to about 25...

What type of engine are you considering building? Single cylinder or multi cylinder? Slow speed (hit 'n' miss type) or high speed like an aircraft type engine? If single cylinder, slow revving then consider UK eBay 223711260322 (from Taiwan) or 172354680911 (from China). The second one has...

I remember reading somewhere in the dim distant past that some dead space in full size reciprocating engines was beneficial in producing a cushioning effect to protect the bearing loads from the sudden change in piston direction. How much/little volume and what effect on efficiency I know not...

I thought that would be the way to go when I built a Scott vacuum engine. I used Fernox (a central heating additive to prevent corrosion) and this is what I ended up with after some time and not draining the engine after a run. The cylinder is cast iron and the hopper is gunmetal. The engine...

Usual obvious questions for those interested in this machine (which I am not): 1. Location? 2. Price? Dave The Emerald Isle