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Thread: Project Cars 2 Gear Ratio Calculator

  1. #11
    Kart Driver klw7890's Avatar
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    New version up!
    The following 2 users likes this Post: AbeWoz, SpinnPaget


  2. #12
    Kart Driver
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    Nice one! I seem to have more gear ratios than I can put in the drop-down (using the A45 AMG). Any way to expand the field of the dropdown?

  3. #13
    Superkart Pilot
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    Quote Originally Posted by RockWall View Post
    Nice one! I seem to have more gear ratios than I can put in the drop-down (using the A45 AMG). Any way to expand the field of the dropdown?
    On the previous version, I was able to add rows by right clicking on the last yellow field and selecting insert and shift cells down.

    The new version doesn't allow this though because the worksheet is protected.

    I needed this on the Porsche 911 RSR which had 41 available gear ratios.

    @klw7890 - Can you add more rows for the available gear ratios? I'm not sure what the max number is, but 41 for the rsr is the most I've needed so far.

  4. #14
    Kart Driver klw7890's Avatar
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    Quote Originally Posted by g.stew View Post
    On the previous version, I was able to add rows by right clicking on the last yellow field and selecting insert and shift cells down.

    The new version doesn't allow this though because the worksheet is protected.

    I needed this on the Porsche 911 RSR which had 41 available gear ratios.

    @klw7890 - Can you add more rows for the available gear ratios? I'm not sure what the max number is, but 41 for the rsr is the most I've needed so far.
    Absolutely! More fields incoming!....

  5. #15
    Kart Driver klw7890's Avatar
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    More fields added
    The following user likes this Post: g.stew


  6. #16
    Superkart Pilot
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    Great work KLW, as an (aerospace engineer) this approach is taking a linear approximation of the drag bucket (very non-linear). It seems to work okay because you are taking the wheel calculation at a high top speed (worst case scenario). Again great work, but I think its important we take in account assumptions when using tools like this.

  7. #17
    Kart Driver TX3 Slawek's Avatar
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    Excellent tools

  8. #18
    Kart Driver klw7890's Avatar
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    Quote Originally Posted by Zeratall View Post
    Great work KLW, as an (aerospace engineer) this approach is taking a linear approximation of the drag bucket (very non-linear). It seems to work okay because you are taking the wheel calculation at a high top speed (worst case scenario). Again great work, but I think its important we take in account assumptions when using tools like this.
    I see what you're saying, but this tool doesn't attempt to calculate actual top speed. It calculates "theoretical top speed" assuming infinite power to reach redline in last gear. In actuality you probably want to reach "max power" in last gear to get a true top speed for that car, but you usually won't be able to get there on most tracks, except maybe Daytona or Nuerburgring.

    The tool purely relates engine RPM to wheel RPM, and converts 1 wheel revolution to a given distance, which yields a travel speed with wheel RPM. No aerodynamics should be at play.
    Last edited by klw7890; 03-04-2018 at 16:20.

  9. #19
    Superkart Pilot
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    Klw, I completely agree and that's why I said it was a great tool. I think you stated the assumptions perfectly just now, infinite power, zero drag, no tire slip. I was just trying to say it's important to announce assumptions to users. Not all users know the math, some might be confused why they can't even hit there top gear even though they have 6 gears and tools says they can hit 300 mph hahah, I love this tool and thought you did a great job, excited to see what else you have up your sleeve.
    Last edited by Zeratall; 03-04-2018 at 16:52.
    The following 2 users likes this Post: g.stew, klw7890


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