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Thread: Latest project, Rocker arm for Worthington Gas Engine

  1. #1
    IOWOLF Guest

    Thumbs up

    Nice work, well done.

    ------------------
    The tame Wolf !

  2. #2
    Join Date
    Nov 2004
    Location
    GunGrabbin' Republik o' Kalifornia USA
    Posts
    321

    Post Latest project, Rocker arm for Worthington Gas Engine

    I just finished making a replacement rocker arm for an 1910 era Worthington gas engine. It is a 1 horse, dual flywheel. It was likely used for running a pump, or cement mixer since it has a cog on the output shaft instead of a flat for a belt.
    My buddy that is rebuilding it brought in the sand cast rocker arm which was broken in half. Of course the other half was not to be found. I had to make measurements from the pivot point to the push rod and to the valve spring. I guessed on the other half. I used the lathe to turn the cylindrical center on both sides from a 2" X 3" block of 12L14 steel, then milled the rest. I drilled and tapped the end for the pushrod, installed a stainless bolt so the head was against the push rod. There was a lock nut on the opposite side to lock the bolt so the valve compression could be adjusted. I radiused the ends and the sides leaving the rough marks, and ridge line so it actually looked like the sandcasted original. This was my first attempt at turning a cylinder from the face of a block on the lathe. It was great practice.



    Duke Reno / Yankee Metallic Metalcraft

  3. #3
    Join Date
    Jul 2002
    Posts
    3,902

    Post

    Nice job!

  4. #4
    Join Date
    Nov 2004
    Location
    GunGrabbin' Republik o' Kalifornia USA
    Posts
    321

    Post

    I forgot to mention that there are oil impregnated bronze washers where the cylinder face meets the casting to reduce friction.
    Duke Reno / Yankee Metallic Metalcraft

  5. #5
    Join Date
    Mar 2001
    Location
    Southern Oregon
    Posts
    1,149

    Post

    Not too bad at all.I find doing something like that is a lot of fun.
    Don\'t ask me to do a dam thing, I\'m retired.
    http://home.earthlink.net/~kcprecision/

  6. #6
    Join Date
    Jan 2003
    Location
    Deep in the Heart of Texas!
    Posts
    5,688

    Thumbs up

    Way to go! Nice job. I've taken parts before final milling and shot-peened or sand blasted them. It gives that "cast" look. After finish milling, it looks like it came from the factory.

    By the way, what's that white stuff? You spill talcum or something?

  7. #7
    Join Date
    Nov 2004
    Location
    GunGrabbin' Republik o' Kalifornia USA
    Posts
    321

    Post

    <font face="Verdana, Arial" size="2">Originally posted by CCWKen:
    By the way, what's that white stuff? You spill talcum or something?</font>
    Thanks for the compliment. The white stuff is something you probably don't see much of in Texas. It was a bit frosty here in the last few days with about 10" of snow.

    Duke Reno / Yankee Metallic Metalcraft

  8. #8
    Join Date
    Mar 2005
    Posts
    408

    Post

    Yankeemetallic;
    Instead of trying to drill eeny-weenie holes in stainless steel for torch tips, you should be making "Billet" rocker arms for American Chopper folks.....
    Nice job by the way.
    I bored & rebushed rockers for my Massey-Ferguson backhoe's engine. Setup was a pain, but it beats trying to find used/new ones.
    I hope you enjoyed the job.
    Rick

  9. #9
    Join Date
    Jan 2003
    Location
    On the Oil Coast,USA
    Posts
    16,855

    Post

    Nice job,I love having the satisfaction of making a part that no longer exists,good sense of achievement.
    I just need one more tool,just one!

  10. #10
    Join Date
    Aug 2004
    Location
    NorthWest Kansas
    Posts
    317

    Post

    Heheheheheh..

    "I bored & rebushed rockers for my Massey-Ferguson backhoe's engine. Setup was a pain, but it beats trying to find used/new ones.
    I hope you enjoyed the job.
    Rick"

    Well, yer first problem is it says MF on the side...and we all know what MF stands for.... :P

    (This Public Service Announcement brought to you by John Deere and your local John Deere Dealer, makers of quality farm equipment for over 125 years.)

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