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Do you have spare material on the length. If so 4jaw, Centre end and turn back enough to use a fixed steady. Bore as required. . I personally would have no concern with boring aluminium just using the 4jaw. Just take smaller cuts.

I was in contact with the guy who made the first engine. He has his valve timing set to TDC and BDC but the main change he made is to increase the compression ratio. If you go to his Youtube channel you will see the conversation. He said it took a long time to get it running that good and he...

Your link doesn't seem to work. The problem I see with the engine is the incoming fuel/air needs two 'cycles' to clear the exhaust and charge the engine.

Edward You could try a quick test. Run the engine and gradually cover the venturi to choke it. It will show if you need a richer mixture. On second thoughts it may well be something else. There are a few videos on youtube and only one engine works well. The rest all run with a misfire some...

A quick question Edward. It looks like it fires once when the points open twice. Is the engine missing every other firing stroke or is it a sound / optical illusion of the video. It's almost like it's starved of fuel. Tony

Beautifully presented Edward. I also love the steam plane and the steam engine I found you made. Really impressed with those too and I am sure others on here would love to see them on this site too. Tony

Hi Ken It means there is a private message for you. Click on the envelope icon next to your name and you can read it. It means you don't need to put personal information on the open forum where the spambots can get your info. In any case I emailed you. Tony

Hi Ken You may want to remove your email from the previous post to avoid the spambots.

Hi Ken. The scale of the TS castings are close to 1/3. I have some basic drawings of the engine to that scale that I have done in order to more reflect the original. I have PM'd you.

The drawing says brass rod so I don't know why it's there. 0.8 μm may be the standard finish for brass round. Maybe it's just in case you are not using 6mm bar. Putting that particular tolerance looks overkill as it is just a connecting rod but then I don't know what purpose the part actually...

Hi Ken It's [email protected] Put whatever you want to say into google translate as the guy does not speak English.

The basic sign is for surface finish. That particular one means do not remove material on this surface.

Most of the beautiful work you see in this thread has been done by Edward. I have not posted any pictures of my engine. Why not email Tolsten Shur and ask if he will send you a GA drawing.

The castings are mostly aluminium. Reasonably good quality with no porosity, Spigots etc. are well positioned so holes are relatively central. Flywheel and base are CI. The flywheel had no hard spots and needed minimum fettling. Altogether very pleased with the result. I wanted to make mine...

Looking good Edward. Does that carburettor give reasonable engine speed control using the Jan Ridders surface carb. I'd love to see a video.

The plans come with the casting set from Dampfmaschinen, Motoren, Generatoren The castings are good but the plans have a few errors and instructions are only in German. The plans show the camshaft gears are reversed to the original engine giving reverse rotation of the drive.

Most of the info is online if you search but since I was an apprentice in the 60's I have always used a Zeus book.

Thanks Richard. I am sure this discussion will help Edward too. I will check what I have. I have a feeling that the valve timing could be improved dramatically without too much change. Maybe the inlet pivot point can be improved. On the subject of the carb I intend to use a surface carb. I...

Thanks Richard that certainly helped me. I am currently making the engine too. My drawing shows the 10mm increased to 12 but I am still not happy with the position. It seems too high up. I need to check the end plates are correct too. Have you stuck with the TS plan or have you changed the...

I have been looking at a refined surface carb for small engines. It is specifically for my 1/3 Benz but would be suitable for any engine. I have tried to add a degree of control which is not easily done with the ''Jan Ridders'' version. The main problem is that there is limited control by...