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  1. #1
    Registered
    Join Date
    Aug 2012
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    0

    Cam grinding?

    Ive been lurking around looking at build threads since I found one of these motors on YouTube. I want to build a small simple single or maybe two cylinder. Question is how do you guys grind your cams?

  2. #2
    Registered
    Join Date
    Jan 2007
    Posts
    76
    You can machine most of the material away with a milling machine and then "round-off" with a hand file.

    I made a machine to grind cams but some will say "it'll never work" and go into vast theory as to why not.

    However, the cams are simple and the 4 cylinder engine (25cc) it is installed in will run up to 10,000 rpm. Quite a satisfactory result for me.

    Have some pics of the grinder somewhere if you are interested.

  3. #3
    Registered
    Join Date
    Jan 2007
    Posts
    76
    Found the pics of the grinder.

    Have started to build a "parallel tracking" grinder to do vintage motorcycle cams. More acccurate approach for these.

    Also, these couple of sites should help.

    http://modelenginenews.org/techniques/meek_cams.html

    http://modelenginenews.org/techniques/camgrind.html

    If you go back to just the "techniques" in this web site, it opens up a vast array of information.

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    Attached Thumbnails Attached Thumbnails 100_0295.jpg   100_0296.jpg   100_0297.jpg   100_0298.jpg   100_0299.jpg  

    100_0301.jpg  

  4. #4
    Registered
    Join Date
    Dec 2006
    Posts
    589
    I make my camshafts in the lathe using a fixture. Read this for more info.

    camarticle

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