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  1. D

    Holt 75 Crankshaft

    Okay thanks for the help
  2. D

    Holt 75 Crankshaft

    Thank you very much for that. Did you just glue in the brass spacers?
  3. D

    Holt 75 Crankshaft

    Okay I guess we were talking about two different things. I'm having trouble visualizing what you mean. You wouldn't happen to have a picture would you?
  4. D

    Holt 75 Crankshaft

    I had thought about that. I was thinking I could mill away the excess and then insert spacers, but I was thinking that it would be really hard to make sure the spacers were precise enough to ensure the shaft would not bend at all.
  5. D

    Holt 75 Crankshaft

    Thank you for the advice. I now have another question. What tips do you all have when it comes to turning a crankshaft? I have been trying to think of what the best method would be to turn the journals without bending the shaft.
  6. D

    Holt 75 Crankshaft

    Well I got the problem all worked out and I finished the other end of the crankshaft. I put the bar in two v-blocks and spun it with an indicator. In the end I had less than 0.001" of runout. Time to figure out how to do the crank journals.
  7. D

    Holt 75 Crankshaft

    These are the pictures I have taken so far. I have not started machining the journals yet. I have only finished one end of the shaft. We have a different lathe that has a dead center but I'm not as comfortable with that lathe. I will probably end up using it though. I did not think about...
  8. D

    Holt 75 Crankshaft

    Hello folks, I just started to work on the Holt engine and I already made my first mistake. I drilled my centers in the ends of the steel rod slightly off and now there is about 0.005" of runout on the bar. This was partially due to the fact that my lathe chuck has about 0.002" of runout and I...
  9. D

    Hello Folks

    Hello everyone, my name is Daniel. I am currently a mechanical engineering student and for the last couple years I have been getting more and more interested in various engines. I built a jet engine already so now I've decided to try my hand at an internal combustion engine. Growing up my Dad...
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