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Recent content by Rustkolector

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    fuel mixture issues. stuart 400 replica build.

    Jasonb I assumed the 400 was H&M due to the first plan publication of the 1915 era and the hot tube ignition. With spark ignition it just means the fuel mixer can be changed to a simple carburetor with a throttle for speed control. Preferably a self compensated RC carb that maintains a...
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    fuel mixture issues. stuart 400 replica build.

    miss_emma_jade A propane fuel system for a hit & miss engine is one of the simplest fuel systems in use and lots of good suggestions here. But it depends on whether you are trying to duplicate the "original" fuel system for this Stuart engine or just want to get it running for now. I cannot help...
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    My Improved Snow Engine

    Colin, Glad to hear you continue making progress. I used a piston rod connector that another Snow builder designed which takes careful close tolerance machining of the coupling and the rod ends. I machined the coupling completely in one piece before cutting it in two with a .010” slitting...
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    Snow engine thoughts

    The intake manifold was made by soldering two 3/8” x 3/16” rectangular cross section brass tubes back to back. See photo of the open end cross section before closing it up. The center carburetor cross section sketch shows the coolant water path at the carburetor. I suggest you put a drain...
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    My Improved Snow Engine

    Colin, You have been busy. Glad you are getting positive results. Jeff
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    My Improved Snow Engine

    Colin, With a new untried engine you have to know for sure that you have good sealing piston rings and valves. An absolute must on the Snow. Your pistons should not contact the cylinder walls. The pistons should float between the two piston rod bushings on each cylinder head. If all is good, you...
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    My Improved Snow Engine

    This is the proverbial Snow tandem double acting gas engine designed by Doug Kelley that I built in 2008. It is my favorite model engine. I never took any video of it at the time. Over the years this little engine and I have had our ups and downs and finally last year we had a bit of an...
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    reamed hole vs. drill rod size

    Petertha, Steamchick Watch this How Its Made video on manufacturing light aircraft engines. In the very beginning they show similar use of the tools you discuss for polishing their aircraft engine crankshafts. The outside cylindrical hone does much the same thing and we are now discussing the...
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    reamed hole vs. drill rod size

    Silver brazing SS head on the stem is fine. Turn a shoulder on the stem to keep the SS head square. Chamfer the stem hole in the head piece. Put a small dab of flux and small piece of braze wire in the chamfer. Stand the stem on end in a vise and heat from the stem side with a butane hand torch...
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    reamed hole vs. drill rod size

    Petertha, Yes, that is the hone I made and use. Jeff
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    reamed hole vs. drill rod size

    John, Yes, phosphor bronze is much harder than brass. It holds a good seat and should wear better than brass. Machine the valve cages on one setup on the lathe to maintain concentricity. After drilling for the valve guide, and before reaming, make a light pass with a carbide boring cutter...
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    reamed hole vs. drill rod size

    Petertha, Gail Graham's simple but excellent external hone is shown on page 25 of MEB issue 25. The drawings are included in the same issue. Jeff
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    reamed hole vs. drill rod size

    Ron is so right. Drill rod is not round. Some years ago Model Engine Builder magazine had an article on hones. The shaft hone looked simple enough to make. I made one and it does an excellent job at truing up ground shafting. If you need the tightest fit, a shaft hone will take off the shaft...
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    Marks Holt 75

    Mark, Do you think your gasket cutter would work with .015" Teflon gasket material? Jeff
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    Snow engine thoughts

    Gordon, How are your Snow modifications coming? Jeff
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