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  • Humber engine





    1920's Humber motorcyle engine all machined from scratch except the rod and big end rollers.

    Bob (Humbernut) has sidevalve, OHV and OHC versions of the bike and has had to make pistons and rings, rods, crankcases, etc. It's his fault that I spent so much money on a cylindrical grinder!

    More info http://www.realclassic.co.uk/techfil...h03122200.html

    The sidevalve bike.

    Paul Compton
    www.morini-mania.co.uk
    http://www.youtube.com/user/EVguru

  • #2
    It looks like the crankcase is cast to me.
    It's only ink and paper

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    • #3
      Paul: A real labor of love. Thanks for sharing. Jim

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      • #4
        Originally posted by Carld
        It looks like the crankcase is cast to me.
        Machined from billet and sand blasted.
        Paul Compton
        www.morini-mania.co.uk
        http://www.youtube.com/user/EVguru

        Comment


        • #5
          Amazing job. Where does a guy find the time to undertake a project like that?

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          • #6
            Originally posted by x39
            Amazing job. Where does a guy find the time to undertake a project like that?
            Bob is (was) a contacting oil-rig engineer. He'd spend a number of weeks off-shore (doing jobs like extracting broken drills from the well and fixing other equipment) and then spend several weeks on shore.

            He's expanded his workshop to the point where he offers his services to the motorcycling community. Just now there's little rig work, so he's doing more on the motorcycle side.

            Picture of the OHC engine



            I used to push the capacity limits of my Boxford sometimes, but I think Bob was coming very close to what's possible on a Myford when making a new barrel;http://www.realclassic.co.uk/techfil...h04022300.html
            Paul Compton
            www.morini-mania.co.uk
            http://www.youtube.com/user/EVguru

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            • #7
              Originally posted by EVguru
              Bob is (was) a contacting oil-rig engineer.
              He is obviously an immensely talented guy.

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              • #8
                Yes I was just going to say he's a good engineer thanks for showing.I dream of being able to work like that.Alistair
                Please excuse my typing as I have a form of parkinsons disease

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