Farm Boy 651

Discussion in 'A Work In Progress' started by Rudy, Nov 2, 2017.

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  1. Mar 21, 2019 #61

    a41capt

    a41capt

    a41capt

    Well-Known Member

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    Thanks for the great reply Rudy! I’m going to build an IC engine sometime this year, and your Farm Boy is just the inspiration I needed to get my butt in gear.

    Thanks again
    John W
     
  2. Jul 30, 2019 #62

    bruedney

    bruedney

    bruedney

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    Hi Rudy

    Nice engine. Thanks for the build thread

    I am currently modelling up #770 and am having difficulties reconciling the dimensions on the Exhaust Valve Rocker Arm Bracket. I see from your drawings on post #33 that you may have had the same difficulties.

    Could you please shed some light on the dimensions you used?

    Cheers
    Bruce

    EDIT: Got it sorted - 0.660" should be 0.690" and 0.440" should be 0.430"
     
    Last edited: Jul 30, 2019
  3. Jul 30, 2019 #63

    Rudy

    Rudy

    Rudy

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    Hi Bruce,
    Glad you sorted it out. Can't remember if I had any problems. Anyway, if you want some measurements or other advice, I'm more than happy to help.
    At the moment I'm trying out the propane demand valve from Howel. It works, but doesn't hold back much pressure from the gas bottle. Need an additional pressure regulator before the demand valve. Anyway, propane seems to be very forgiving to get going. Just a torch laying in front of the intake and leak some gas works fine (but of cause lets unburned gas into the room).

    Rudy
     

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