Recent content by vederstein

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  1. vederstein

    Rotary Engine Design

    Correction: The design for the Hula engine is good. I'm not aware of any issues that that set of drawings. The rotary engine (Rotary Engine Design) is the one with design issues.
  2. vederstein

    Rotary Engine Design

    I've long lost the files. Sorry
  3. vederstein

    Gaging the market - Casting for the Sun-Planet Engine for Sale

    Nope. Not looking good. Perhaps I'm asking too much? Perhaps my design isn't as neat as I think? Perhaps the amateur casting quality is a deal killer? Perhaps this hobby is dying faster than I thought? It doesn' t matter though. I'm not taking this personally. I just wanted to.... (Hell, I...
  4. vederstein

    Coomber Engine Ideas

    Nope. If there is an issue and the rod rotates, I can add a flange to the cam rollers.
  5. vederstein

    Coomber Engine Ideas

    I believe I've worked out the final issues. I've modified the base, removing the undercut, thus making is sand castable. I added fasteners and adjusted a couple of items that didn't work out. So I'm off to creating the first set of drawings. From these drawings, I'll make the first one. If...
  6. vederstein

    Sun-Planet Engine

    It actually blew bubbles, but very badly. I did it for the 2017 Maker Faire Season. It was more of a piece of art than anything else. I was feeling that the Maker Faires were getting too STEM (read kid) orientated, and I wanted to bring back a bit of whimsy and uselessness to the faires. The...
  7. vederstein

    Gaging the market - Casting for the Sun-Planet Engine for Sale

    The plans for this engine are on this forum. I've included the drawings, 3D solid models, and the .stl files I used for the casting pattern. It's all there. Go to the end of this thread: https://www.homemodelenginemachinist.com/threads/sun-planet-engine.31854/page-2 Strange, this thread is...
  8. vederstein

    PM Research #5 - how do I bore the main crankshaft journals?

    If I remember correctly, I think that's how I did it. But my equipment is considerably larger than a Sherline.
  9. vederstein

    PM Research #5 - how do I bore the main crankshaft journals?

    I think when I did mine, I reamed a hole all the way through. It's been many years since then, perhaps I forgot.
  10. vederstein

    BEAM engine with Peaucelliar-Lipkin Linkage.

    Oh how I adore unusual linkages and mechanical motion....
  11. vederstein

    Coomber Engine Ideas

    The bronze bearing on the axle has two 1/8" wide slots along the perimeter. It's a similar setup to a wobbler's radial slots except the slots are on the circumference pointed to the center axis instead of curved slot around the center of rotation. When I get around to finishing the prototype...
  12. vederstein

    Gaging the market - Casting for the Sun-Planet Engine for Sale

    Ok, It's been a couple of weeks since I made the offer to do a run of castings. Unfortunately, there was no interest. Therefore I'm dropping this endeavor. ...Ved.
  13. vederstein

    Coomber Engine Ideas

    A bit more design work and it ideas are coming together....
  14. vederstein

    Coomber Engine Ideas

    On to my next engine. I was looking at Elmer's #46. The Coomber engine. (I don't know if it's "Coomber" or "Comber". I've seen it spelled both ways.) Anyway, these designs always have the cam ring with the cam rollers on the inside. I was thinking what would happen if I put the cam rollers...
  15. vederstein

    V-8 Engine & 5 Speed Gearbox in Kerbal Space Program

    I don't know how many here are aware of the computer game Kerbal Space Program. It's a rocketry and orbital simulation game. Some people have made some amazing non-rocket related items using the physics engine in this game. I came across this one what really blew me away. He modeled a V-8...
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