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  1. Klrskies

    6 cylinder radial

    I had read once that the early rotary's thin, light cylinders were machined down from around 2000lbs of billet steel, as they didn't have spin casting technology at that time. I wonder if a rotary would have a mild supercharging effect from the spinning assembly, the mixture within the intake...
  2. Klrskies

    Let's discuss market of internal combustion engines

    Maybe you could design an improved / beneficial component for an existing powerplant, something that improves its functionality, performance or durability?
  3. Klrskies

    6 cylinder radial

    Would that then satisfy the odd number of cylinders theory? Was that a harmonic issue? What number of cylinders per bank were the wasp engines?
  4. Klrskies

    Gear cutting on mini mill

    I believe production commercial and precision gears would likely be cut with a Hob instead of a profile cutter. The Hob gear cutter is in the shape of a rack and generates the tooth profile as the hob is synchronized to rotate with the pitch of the rotating gear and would likely begin...
  5. Klrskies

    Looking for hex wrenches with hardened ends

    Several years ago, before I retired, I had a similar experience. I saw these on Amazon and gave them a try. They held up better and were stiffer. They had the pivotable ball type on the long end. I didn't like the case as the fractional size was too small and difficult to read. Not aware of them...
  6. Klrskies

    Needle bearings in a model diesel ?

    Perhaps you could calculate or scale the pressures that will be exerted on surfaces that will contact the rollers and if the hardness is adequate, maybe around 60 rockwell C, to avoid deformation?
  7. Klrskies

    Precision?

    Precision should always be considered as how much is necessary, and why. Functionality is the ultimate judge! I have watched mold making in this country migrate offshore since the 80's due to cost benefit. Medical mold making remains relatively strong due to liability issues. As one becomes...
  8. Klrskies

    Precision?

    I'm 64 years old and coming to the end of my career. I started as a machinist out of trade school in 1977, went into cnc EDM, sinker and wire, then extrusion die design, then mold making and mold design. I would say the bigger the company gets, the bigger the disconnect between engineering and...
  9. Klrskies

    Hello from California

    Thank you Byron, Hope your doing ok. I have some health issues myself so my hobby takes a backseat to working... 11 hours today, too much! I've been thinking about trying to build a single cylinder diesel. High pressure fuel injector is a challenge, but may be interesting. I've also been messing...
  10. Klrskies

    CAD /Autocad Help

    I started out on a drafting machine in the 70's ... a big step up from a T Square. I still enjoy drawing sketching and using Trigonometry to design by hand. Part designs back then were simpler and more buildable with just conventional machine tools. A part with complex, swept geometry required a...
  11. Klrskies

    CAD /Autocad Help

    Yes, Dolphin may be a possible consideration for someone seeking a CAM system as well as CAD. I still own a CNC bridgeport knee mill and an old Agie DEM 315 Wire EDM. I last used Autocad 2010 and 2012 at work a decade ago, great program. A decade or so earlier, Autodesk offered a simple Cad...
  12. Klrskies

    CAD /Autocad Help

    I guess everyone wants to sell a subscription these days...Cash stream -vs- one time purchase. I'm old enough to want to have my own software and files on my own computer. I started using Partmaster by Dolphin a decade ago at a place I worked to do some 2-1/2 axis milling. Have purchased it for...
  13. Klrskies

    Hello from California

    Thank you!
  14. Klrskies

    Hello from California

    Thank you Minh!
  15. Klrskies

    Hello from California

    Thank you!
  16. Klrskies

    Hello from California

    Thank You! Paradise, CA, East of Chico.
  17. Klrskies

    Hello from California

    Thank you for the welcome!
  18. Klrskies

    Hello from California

    Thank you rklopp, I used to live and work in Fremont on the east side of the bay. Great weather! Here's a photo of my little shop set up in the corner of my living room...I like to have a good western on TV while I mess about on projects and be adjacent to the fridge and in controlled...
  19. Klrskies

    Honda GX160- 8.5cc

    Subscribed to follow you on your interesting journey. Thank you for sharing, Ken
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