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  1. scottyp

    Webster Engine Success

    It almost looks like the paper is getting sucked up towards the exhaust. Maybe your exhaust valve is staying open a little bit too long? The paper may be acting like a valve and closing off the exhaust as the piston is starting the intake stroke. I don’t know if I would let it bother me too...
  2. scottyp

    Webster Engine Success

    Runs great and sounds like a Webster! Great build video series also. Congrats!
  3. scottyp

    Printer problem

    I am thinking slowing down the Y acceleration also. I have an A8, and when I put the new Cura on my linux machine, I noticed that the printer had a different personality, a lot quicker and jerkier feeling than when I use the version of Cura that came with the machine. I have not had shifting...
  4. scottyp

    Scotty's Boll Aero Glow

    Thanks guys! I dropped the prop to a 9x6 and it is a lot angrier now. Angry in a good way and very responsive to the throttle!
  5. scottyp

    Scotty's Boll Aero Glow

    ...And it runs! Pretty well anyway. I think it could use a little more carb and/or a little less prop, but I am rather satisfied at this point. (Sorry I-phone users, you may not hear the awesomeness. I had to downsize the video to an mp4.)
  6. scottyp

    Scotty's Boll Aero Glow

    Here is my rendition of the Boll Aero Glow .49 cu in. It is a simple and nice engine to build, not too big or too small. I enjoyed the build and finally got the motivation to finish it up and get it running so I could cross it off of my build list.
  7. scottyp

    For Sale Post Cabin Fever Sale Items

    Thanks for the reply, I looked around a bit and I don't think that tool holder will work on my post. Have a great day.
  8. scottyp

    For Sale Post Cabin Fever Sale Items

    Maybe interested in some of that, like backsplash and toolpost stuff. I have an A to Z QCTP, any idea if the 0XA tool holder will work with my toolpost?
  9. scottyp

    Building a twin cylinder inline i.c. engine.

    Assuming we are talking 4 stroke, that theory works on a horizontally opposed twin, one ignition every 360 degrees, 0, 360, 720 (0). I think an inline twin ends up firing differently, like 180, 540. I may have to think about that some more for it to become clear in my mind. That is also...
  10. scottyp

    Sold KEEPING - Complete and Clean Set of MODEL ENGINE BUILDER - Issues 1 through 27

    Hey Grasshopper, how valuable do you think your set is? As Vietti stated, these are IN-valuable and Gary did get a bargain. Said with humor in mind and not trying to be a total smart #$$ . This is a nice set to have and only $6 something each, and I am not 100% firm on that.
  11. scottyp

    Sold KEEPING - Complete and Clean Set of MODEL ENGINE BUILDER - Issues 1 through 27

    I collected this set over time and haven't really looked at them for a while. These are all of the issues that were available in print, everything after is digital only. All issues are in great condition and complete with all drawings, and lots of great articles. I am thinking $175 plus...
  12. scottyp

    For Everyone who doesn't have a lathe, a mill, a drill press---i.c. engine

    That is awesome. And we thought Henry Ford’s was crude. I did actually cringe waiting to see some blood when he was cutting the rubber from the valve stems and when he was drilling through the head with his finger right under it. Not that I have learned those lessons a time or three.
  13. scottyp

    Wasted spark ignitions

    It looks to me, from a little searching and this image, that there is not any drive circuitry built into that coil.
  14. scottyp

    Wasted spark ignitions

    Regarding the ones in the pictures without the aluminum case, 12V is normally connected to the center pin which is shared with both of the internal coils. To fire one side, the corresponding pin is momentarily pulled to ground with points or a drive transistor and the coil fires between the two...
  15. scottyp

    New Today!

    Welcome neighbor!
  16. scottyp

    Harbor Freight / Rong Fu Improvements (HF #33686 Round Column)

    I'm not sure when HF first sold these, but I think mine was from the early 2000's. I'll double check on that.
  17. scottyp

    The North Pole

    Once you are halfway into the woods, you are exiting.
  18. scottyp

    The North Pole

    OK - How one determines the polarity of a permanent magnet is by where the magnetic field lines run from/to. They run from the magnetic north to the magnetic south. And in Earth's case they run from the Antarctic end to the Arctic end of the Earth. I am now sold on the magnetic north being at...
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