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    1. 12-12-2006 #1
      Van B's Avatar
      Van B
      Van B is offline Registered User
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      Speed calculator

      Is there a calculator out there that will estimate top speed taking Cd into account along with HP and gearing, etc?

      Jeff
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    3. 12-12-2006 #2
      the camtender
      the camtender is offline Starting The Transformation
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      Jeff,I don't know if there is a calculator or such,but it sounds like you might be planning some sort of high speed event?If so which one?
      I'm in the process of getting ready for an open road race event (unlimited speed) in spring 07 and and will be starting 1st shake down run on a set of 247 gears this weekend.68 camaro.

      Jerry
      Camtender,Privateer by choice

      Member of Hot Rod Power Tour Long Haul Gang 03'

      Winner of the 2nd annual Pro-Touring.com Run Thru The Hills drag racing event sponsored by Musclerides.com 06'

      2nd in class @ Big Bend Open Road Race 07' http://www.youtube.com/watch?v=Nti3UarUwzU

      Record holder @ The Texas Mile 08' for 1st gen. camaros http://www.youtube.com/watch?v=lvEzlnnAB8I

      http://www.youtube.com/watch?v=6L0sYaMnni4
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    4. 12-12-2006 #3
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      tireman
      tireman is offline New to Pro-Touring
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      Here is a little spreadsheet I did a while back...

      I was laid up with a bad back for a few months and got bored, so I wrote this. The second page has a top speed estimator in it. I never validated it, but I think it's correct...

      Let me know if you need help understanding it. I wrote it for myself with no real intention of someone else understanding my bizarre thoughts while under the influence of pain meds!

      Good luck!
      Attached Files Attached Files
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    5. 12-12-2006 #4
      the camtender
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      Tireman,did you forget to attach a link or something?
      Camtender,Privateer by choice

      Member of Hot Rod Power Tour Long Haul Gang 03'

      Winner of the 2nd annual Pro-Touring.com Run Thru The Hills drag racing event sponsored by Musclerides.com 06'

      2nd in class @ Big Bend Open Road Race 07' http://www.youtube.com/watch?v=Nti3UarUwzU

      Record holder @ The Texas Mile 08' for 1st gen. camaros http://www.youtube.com/watch?v=lvEzlnnAB8I

      http://www.youtube.com/watch?v=6L0sYaMnni4
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    6. 12-12-2006 #5
      the camtender
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      Ok, I see it now.Computer will not open file
      Camtender,Privateer by choice

      Member of Hot Rod Power Tour Long Haul Gang 03'

      Winner of the 2nd annual Pro-Touring.com Run Thru The Hills drag racing event sponsored by Musclerides.com 06'

      2nd in class @ Big Bend Open Road Race 07' http://www.youtube.com/watch?v=Nti3UarUwzU

      Record holder @ The Texas Mile 08' for 1st gen. camaros http://www.youtube.com/watch?v=lvEzlnnAB8I

      http://www.youtube.com/watch?v=6L0sYaMnni4
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    7. 12-12-2006 #6
      David Pozzi's Avatar
      David Pozzi
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      I don't see rolling drag in your sheet.
      Read this: http://www.mayfco.com/cobra.htm
      Last edited by David Pozzi; 12-12-2006 at 08:14 PM.
      67 Camaro RS that will be faster than anything Mary owns.
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    8. 12-12-2006 #7
      Van B's Avatar
      Van B
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      Quote Originally Posted by the camtender
      Jeff,I don't know if there is a calculator or such,but it sounds like you might be planning some sort of high speed event?If so which one?
      I'm in the process of getting ready for an open road race event (unlimited speed) in spring 07 and and will be starting 1st shake down run on a set of 247 gears this weekend.68 camaro.

      Jerry
      Not really planning anything, just curious. Any idea what the approximate Cd is on a 67 Camaro?

      Tireman, why do you have 2nd gear ratio and what criteria do you use to estimate drivetrain efficiency?
      Jeff
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    9. 12-12-2006 #8
      David Pozzi's Avatar
      David Pozzi
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      Here is an Land Speed Record site with several spreadsheets:
      http://purplesagetradingpost.com/sum...eet-index.html
      Last edited by David Pozzi; 12-12-2006 at 09:46 PM.
      67 Camaro RS that will be faster than anything Mary owns.
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    10. 12-13-2006 #9
      ITLBTU's Avatar
      ITLBTU
      ITLBTU is offline Registered User
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      I have a tool that was made by Erson Cams. It has a speed calculator on one side, and a valve computer on the other. It's a circular slide rule.
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    11. 12-13-2006 #10
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      malihoochie
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      Quote Originally Posted by ITLBTU
      I have a tool that was made by Erson Cams. It has a speed calculator on one side, and a valve computer on the other. It's a circular slide rule.
      Ah! The ol' Erson "dream Wheel" !
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