150 Case at Rollag

Discussion in 'Steam Traction Engines' started by Jerry Christiansen, Sep 9, 2019.

  1. Jerry Christiansen

    Jerry Christiansen Mega Poster WMSTR Lifetime Member

    Hi all,
    If you aren't aware that the 150Hp Case was a big attraction during this year's show, you must not have attended the show or heard about it. Several videos are on YouTube. Here are some links to the ones I found.













    https://www.youtube.com/watch?v=JifNN9y6HSs

    There are pictures of the worksheet we filled out when we had the engine on the Red Brake different places on the internet. The numbers we recorded are below. There was an error in the calculation on line 21 of the original worksheet. I corrected it here.

    The line numbers below match the original worksheet. You may notice that line 20 is missing. If you look at the worksheet (or the picture), you will see line 20 is missing there, too. This is means the worksheet we used is a copy of the one Amos Rixmann gave us when he came to visit a long time ago.


    line . . Pounds . . RPM . . . . Hp


    1. . . . 100 . . . . . 236 . . . . 23.6


    2 . . . . 200 . . . . . 225 . . . . .45.0


    3 . . . . 300 . . . . . 204 . . . . .61.2


    4 . . . . 400 . . . . . 200 . . . . 80.0


    5 . . . . 500 . . . . . 190 . . . . 95.0


    6 . . . . 600 . . . . . 184 . . . . 110.4


    7 . . . . 700 . . . . . 192 . . . . 134.4


    8 . . . . .800 . . . . . 190 . . . . 152.0


    9 . . . . 900 . . . . . 182 . . . . 163.8







    11 . . . .400 . . . . . 205 . . . . 82.0


    12 . . . .450 . . . . . 202 . . . . 90.9


    13 . . . .500 . . . . . 199 . . . . 99.5


    14 . . . .550 . . . . . 193 . . . . 106.2


    15 . . . .600 . . . . . 188 . . . . 112.8


    16 . . . .650 . . . . . 190 . . . . 123.5


    17 . . . 700 . . . . . 193 . . . . 135.1


    18 . . . 750 . . . . . 192 . . . . 144.0


    19 . . . .800 . . . . . 192 . . . . 153.6


    21 . . . .850 . . . . .186 . . . . 158.1


    22 . . . 900 . . . . . 184 . . . 165.6


    23 . . . .950 . . . . . 180 . . . . 171.0




    25 . . . 700 . . . . . 190 . . . . 133.0


    26 . . . 750 . . . . . 192 . . . . 144.0


    26 . . . . 800 . . . . . 184 . . . . 147.2


    27 . . . . 850 . . . . . 178 . . . . 151.3

    The highest power we measured was 171Hp on line 23. That does NOT mean the most power the engine can produce is 171. At that speed and that power, the belt was squeaking and hopping up and down. We decided that as long as nothing had broken and no one was hurt, we could stop.

    Thanks to Kory and everyone involved for building the tractor and bringing it to our show.

    Later,
    Jerry Christiansen
     
    Last edited: Sep 9, 2019
    M Kerkvliet, Ned and Seth Hanson like this.
  2. M Kerkvliet

    M Kerkvliet WMSTR Past President Administrator WMSTR Lifetime Member

    Thanks for doing the research and posting the links Jerry. It was an impressive display even sitting still!
     

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