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  1. J

    Opposed two cylinder engine question

    I don't quite understand why that would be. the crank would have two rod journals 180 deg out of phase to each other. Both would hit TDC at the same time with that arrangement.
  2. J

    Opposed two cylinder engine question

    Sounds like it. Hmm... Perhaps it wouldn't be such a bad idea to get a hold of one of those hobby king twin cylinder engines and dissect it. I would be interested to see what the case volume is with the crankshaft installed compared to the displacement of the cylinders. I would have to wait...
  3. J

    Opposed two cylinder engine question

    Lohring, with so many dynamic variables acting on these two stroke engines, would that mean that one could only get ever closer to a optimum running engine and not perfect? I would imagine that even changes in something like density altitude would knock the engine off of its ideal gas pressures...
  4. J

    Opposed two cylinder engine question

    That's a good point. I don't have any components for this yet. Those ZDZ engines look well designed. That reminds me of some people that had mentioned that DLE four cylinder engines had crankshaft problems. I guess the cranks had a tendency to come apart after some use.
  5. J

    Opposed two cylinder engine question

    Thanks for the info :). I will definitely check that out.
  6. J

    Opposed two cylinder engine question

    Yes :), that was meant to be more of a joke than anything else. However, I do machine parts and think in the imperial system when I see things. And, chances are I will never change. So, for calculations dealing with orders of magnitude and unit conversions within the metric system, I comply with...
  7. J

    Opposed two cylinder engine question

    Are those plans only in German? Ugh! That must mean that the dimensions are in metric.
  8. J

    Opposed two cylinder engine question

    Petertha, yes you are more than likely right about the cost. I think for me it is more for the experience than the immediate practicality. One thing I am noticing here is that the crankcases are pretty tight looking; the castings almost form fit the rotating crankshaft assembly. I would imagine...
  9. J

    Opposed two cylinder engine question

    All of what you said makes a lot of sense. For simplicity sake, I thought that I would just build a horizontally opposed twin cylinder engine that has the rod journals 180 out of phase to each other. This way a single carburetor could be used. The only problem is that since the crank is rotating...
  10. J

    Opposed two cylinder engine question

    With that kind of engine, would the carb still be mounted to the crank case so oil can lubricate the bottom end?
  11. J

    Opposed two cylinder engine question

    Hi everyone, I would like to start a summer project where I build a two cylinder engine that is horizontally opposed and uses off the shelf components to help make the build easier. Things such as: Two 6hp 2 stroke chainsaw engine cylinders with their matching pistons and rods. A...
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