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  1. kf2qd

    Stuart S50 - Replacing mild steel shafts with stainless steel shafts.

    If stain;less is in contact with steel and water it will corrode. Electrolytic action.
  2. kf2qd

    Flat Plane vs Cross Plane Crankshafts, and Firing Order Considerations

    If I remember right... The old Triumph and BSA twins had different cranks. Triumph had the crank pins aligned, abd thee BSA had them at 180 degrees. The triumphs had more vibration at certain speeds. My Honda 360 had them at 180 degrees and I had to set the points at 5000 RPM to get it to run...
  3. kf2qd

    Printer problem

    If changing the Accel corrects the problem them might want to look into adjusting the current limit on that axis driver (a small potentiometer on the board) or updating the firmware in your machine. It is not difficult, involves setting up the correct software for your machine - Arduino or...
  4. kf2qd

    How do!

    If you read the post that started this thread he said that he was thinking about making a diesel-electric unit, and maybe later working on a diesel-hydraulic unit.
  5. kf2qd

    First and Third Projection Symbols

    First angle is used by the British and Europeans, while the Americans and Canadians do it correctly and use 3rd angle. Making parts for windmill towers is fun, they come from Spain and Germany and the first thing I have to do with any drawing is convert to 3rd angle to eliminate the confusion...
  6. kf2qd

    How do!

    Advantage of electric is that it is clean. The disadvantage of hydraulic is that it tends to leak and thus leave a mess and collect dirt. It is also has less efficient than electric. Size of an engine and generator is comparable to engine, hydraulic pump and oil tank. A 240V generator and a VFD...
  7. kf2qd

    2024 Florida Flywheelers Show

    That part sticking up out of the cylinder is a condenser or radiator. The moisture (don't quite think it is steam) rises up through that, cools down, condenses and falls back into the water jacket around the cylinder. Could even have the water level part way up in that radiator and increase the...
  8. kf2qd

    Demoiselle boxer twin

    You might consider making your engine a 2-stroke. It would look good, and with each cylinder firing each cycle it would produce more power for the same size, and fewer parts.
  9. kf2qd

    Hand cramping and arthritis

    You all might want to look into something that was causing a problem for a close friend. Eat certain foods and his gut would just ache. Traced it down on his own to sulfur. Sulfur dioxide is the bleaching agent in flour and white sugar. Is also present in garlic and other foods. He has to be...
  10. kf2qd

    I need some guidance on building a steam powered pump for central heating.

    Your hot water heat does not need any pressure, and in fact if it does build pressure it will be very hazardous. I had a low pressure hot water heat system with an outside boiler when I lived in Indiana. My backup for power outages was to make provision to switch my furnace circulation and...
  11. kf2qd

    New Member and What is this?

    Part of a machine oiler?
  12. kf2qd

    Merry Christmas and Happy New Year 2024 !

    Feliz Navidad y Prospero Ano Nuevo. Luke 2, NIV 8 And there were shepherds living out in the fields nearby, keeping watch over their flocks at night. 9 An angel of the Lord appeared to them, and the glory of the Lord shone around them, and they were terrified. 10 But the angel said to them...
  13. kf2qd

    Mini Lathe Issues and Concept Execution

    1 turn in 40 inches is not doable on a 7x10 mini-lathe. It is not doable on any lathe. It is something that would be done with a milling machine and an indexing head driven by the long axis lead screw, or with a CNC with a 4th axis. As far as the other behavior of your machine - leaving the...
  14. kf2qd

    Sleeve questions

    Are you going to try and run it on steam, or air? if air, then just use aluminum and don't worry about sleeving it. It will work just fine with a sliding fit and an occasional drop of light oil. those engines can run without rings, or a light running fit with an o-ring. Nignition, low pressures...
  15. kf2qd

    Engine Coolant and Storage After Shows

    Coolant in a car radiator is possibly affected similar to boiler fluid in a steam engine. In a fairly closed system, as it is heated it tends to drive out the air and oxygen and make the solution fairly inert. The antifreeze has some components that help with corrosion resistance. DI water is...
  16. kf2qd

    Stuart 10v

    Metric English, English Metric. For the purposes of building a model where you have to make and tap the holes I would think whatever is handy in the area you live, it is easy enough to figure out the major diameter of the threads called for (albiet easier for the metric than the English...) and...
  17. kf2qd

    Engine ports

    Take a look at the .60 2-stroke that I posted here a number of year ago.
  18. kf2qd

    Aluminum bar stock for pistons

    Go visit a local engine rebuild shop and see if you can buy a used diesel piston. They tend to have more meat to them, and they are high silicon.
  19. kf2qd

    For Sale Sieg KX3 CNC for sale.

    I have recently obtained a Bridgeport Boss and I now need to sell my Sieg Kx3 CNC. Running Mach3 on a Mini PC running Windows 10 and an Ethernet Smooth Stepper. I replaced the original C11 style interface board with a C25 Breakout Board with screw terminals. Wanted more inputs for limits and...
  20. kf2qd

    Wanted 4" milling machine vise

    It would seem that your requirements are mutually exclusive. Quality, precise and inexpensive don't usually go together. I would go to Amazon and look at some of their inexpensive units. I have a 3" one of those on my KX3 CNC and it has done very well for running batches of parts in small...
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