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Thread: CNC Adjustable Cam Gears!

  1. #1
    Adam.Findlay's Avatar

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    CNC Adjustable Cam Gears!

    the first full prototype cut of the adjustable cam gear centers Scott and I have designed and coded for was completed tonight on works small CNC mill.

    This cut was done from a scrap piece of 2-1/2" alloy I had lying around hence why some of the cuts go off the egde of the stock. The final part will be 75mm diameter

    the alloy "hat" bolts onto the front of the cam, and a modified stock cam gears bolts onto the back of the alloy hat. this allows the outer cam gear section to stay in its stock position (ie all timing marks lined up as they would normally) but allows the cam to be adjusted throughout 20 cam degrees of movement 10 advance, 10 retard from stock position. the alloy hat spiggots into the front of the modified stock cam gear to ensure everything runs true and on center. and the modified section of the stock gear still locates on the snount of the cam for the same reason.
    the PCD of the adjuster bolts is the same PCD as the screws that hold on the cam angle sensor pick up plate on the front exhuast cam. this means the same alloy hat can be used for all 4 cams, instead of having 3 with one hat and the front exhaust one having to be different

    Will be getting some 3" alloy and making the first proper set tomorrow hopefully.

    Now, pics! keep in mind this is an unfinished prototype hence why there are no adjuster bolt holes drilled and tapped yet. nor is the alloy hat the correct size as it was a test piece to ensure Scott and I had out machine code correct.











    All going well. pending some actual in engine testing I should have these for sale in the near future, will also be looking into getting them annodised black depending if the annodisers are cheap enough. cheap and easy soloution to those Works engineering gears which don't seem to line up correctly.

    @swinks

  2. #2
    scott.mohekey's Avatar

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    Just a short clip of the piece being made in the mill:

    https://www.facebook.com/video.php?v=10152274342646867

  3. #3
    Adam.Findlay's Avatar

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    Bump. will be making some propper ones this week.

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