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V-twin (my own design)

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  • V-twin (my own design)

    Gents,

    This past August I started designing a small v-twin engine. I wanted something different so the reason for my own design. All the parts were made from solid, no castings. It has a 1.00 bore and an 1.25 stroke. It's a 90 degree configuration. The main parts are 6061 aluminum with a steel crank and steel forked rods. The crank rides on sealed ball bearings but there is an oil pump to feed the rods, gears and cams. The heads are 7075 aluminum with bronze guides and steel seats. The valves are stainless steel. The ignition is electronic fired by a Hall trigger with a timing disc. It is a dual fire system with a waste spark on both cylinders.
    gbritnell





    Here's a link to Youtube of it running for the first time. It needs a little carb work but other than that it's just about complete.
    http://www.youtube.com/watch?v=opvp1sGQtJU

  • #2
    Very nicely done! I love it.

    Got any in-progress build pics, or shots of tricky fixturing?

    Doc.
    Doc's Machine. (Probably not what you expect.)

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    • #3
      Good looking job!! Congratulations!

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      • #4
        Hi Doc,
        There's the complete build with pictures, from the first block of aluminum up to making the exhaust pipes on HMEM.
        http://www.homemodelenginemachinist....p?topic=6847.0

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        • #5
          You did a great job on that engine!!

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          • #6
            Wow, incredible craftsmanship and design!
            "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did."

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            • #7
              Beautiful job as usual George. Can we look forward to seeing it and you at NAMES this year?
              Jim H.

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              • #8
                Wow! That is really fantastic craftsmanship!


                Steve
                Last edited by S_J_H; 03-17-2010, 07:07 PM.

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                • #9
                  I'll be there Jim. Only death and taxes would keep me from going. It's one of the few places to socialize with all the modeling types.
                  gbritnell

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                  • #10
                    Beautiful creative workmanship!!

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                    • #11
                      George, WOW, awesome. Mighty nice and great inspiration. Thanks for sharing.

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                      • #12
                        that is really cool great job man

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                        • #13
                          Any plans/Drawings?

                          I like that - any plans available?

                          Pete

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                          • #14
                            Looks great. I look forward to seeing it at the NAMES show.
                            Jonathan P.

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                            • #15
                              Wow!

                              I'm in awe! That is really amazing. I like your starter setup. You do realise that you can't do good work on a round column mill thought don't you?

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