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Looks and runs as a well finished engine, be proud of it, congratulations ! the whole story, an awsome thread, thanks

I vote for no paint at large, just a few part tinted, maybe, blued screws & nuts, a touch of black inside the flywheel, but take care that yours engine does not look like a steam engine ! Yes My engine is pretty hot, as long as the engine runs on the bench, how can we avoid it ? I get burns by...

If I follow properly, your aim is to replace the float chamber by a plain fuel tank, in this case it looks rather small for a 15 CC, beautiful but small, really smart with the carb in bronze. The tank also will become pretty hot so close of the engine. Cheers

nice build, Kadora, does it run with glow ? I' m building the water cooled version of the same, same source too, not far from end. for the butane, here engines are runing with butane http://www.ministeam.com/acatalog/Maier_Butane_Powered_Model_Engines.html but I don't have plans for...

a week ago you were ready to give up, I thought ! congratulation, you have got a running engine not a paperweight... nice engine, nice noise too, I understand that you're happy. and now tuning and tweaking, again a lot of happy moment to come

Hi Borna : I think the screws between collar and hub would be easily sheared while running your engine... Muellernick : I thought that a key would be a good solution without any great modification, namely reboring flywheel. yours explanations are clear and convincing, must not be stingy with...

you stopped things just in time ! For such a flywheel and engine setscrews are a nono, otherwise take care when the flywheel will go into orbit … A keyway without lateral play plus a bolt (already present I guess) is the solution. cut the keyway on the shaft with an end mill, and in the...

looking at the pattern of dye marks in the femeale cone, of the same "thead" than the top slide screw I bet, a setting of the top slide will reduce this wobbling, if the slides are worn regularly along their ways... turning a morse cone in my lathe is now impossible without a major overhaul of...

awsome job on this engine, and pretty good pictures too, clear and sharp, thanks for sharing. the flywheel, wow, on the heavy side, I hope it is well locked on the shaft ! waiting for the video. cheers

I fully agree, I cut gears (mod 0.5, 0.8, 1.0) with tools made ​​by myself, and they work perfectly, I do not consider even having to buy other, there is a gear on the plan, I do it now. it's so good, how wonderful is this hobby. watching the sparkplug that I just bought for my new...

This the principle of the Newcomen Atmospheric Engine around 1700 ! It worked. http://www.egr.msu.edu/~lira/supp/steam/ I'm not aware of a working model at the moment

I suggest that you make a copy of the valve diagram on hard paper, put it between 2 washers on the crankshaft with the correct position of TDC, and turn the shaft (in the right direction!) then check that valves open and close at the designed angle. It is simple to do and reassuring. You should...

I use two keys too, the oposite movement of both hands together is very natural in fact, certainly more than a single key, and after, removing the two keys also seems more obvious.

what a smart thread ! it looks like an engine ready to run, there is no longer any petrol at the pump ?

why things will be different with another engine ? you may use a steady to fix this problem, and use a larger and longer boring bar, I had the same problem last year, with a cast iron cylinder and my engine is running now

What you need is a DC light (i.e. a car headlight with battery to keep things simple and cheap) chopped at the same frequency of the lathe. It can be a mechanical shutter like in a movies projector connected with the lathe spindle.

I did this cute little engine, and she runs lively. the original paper was written by J. R. Senft and serialized in Live Steam magazine in Feb-April 1976 issues. it is a first class tutorial. pictures are attached and videos are on my album picasa, I would be glad to help you in the making.

nice built Art, not that easy to get such a quiet and steady running.

Thanks for suggestions ! I must confess that I should have fixed that flywheel mounting before, as on 2 occasions the flywheel nut was unscrewed, and the locking pin on crankshaft was sheared off cleanly, so I put a hardened steel pin. This time the pin stays intact but its hole on the...

a careful examination of the opening and closing of the valves showed me that the timing were correct, so no change here. But the thing that really changed something was a large increase in the stiffness of the valve springs, (to give an idea about 1.7 kg on the valve head are required to open...