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Speedometer Formula

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Anonymous
  • Member since
    April 2003
  • 305,205 posts
Speedometer Formula
Posted by Anonymous on Sunday, February 13, 2005 5:09 PM
I am trying to get the formula or info needed to set up an OS section of track to time train speed for a scale MPH.
I cant seem to find any info on it. Does anyone have anu info?

Thanks
Brad
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nfmisso
  • Member since
    December 2001
  • From: San Jose, California
  • 3,154 posts
Posted by nfmisso on Sunday, February 13, 2005 5:38 PM
60 miles/hour * 5280 feet/mile * hour/60 minutes * minute/60 secound = 88 feet/second

In HO, 3.5mm = 1 foot.

88 * 3.5 = 308mm (12 1/8").

So in HO scale, a train traveling 308mm (approximately 1 foot) per second is going 60 scale mph.

speed, time and distance have a linear relationship; thus 2 seconds for 308mm is 30 scale mph.
Nigel N&W in HO scale, 1950 - 1955 (..and some a bit newer too) Now in San Jose, California
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NZRMac
  • Member since
    September 2004
  • From: Christchurch New Zealand
  • 1,525 posts
Posted by NZRMac on Monday, February 14, 2005 1:20 AM
Check out this link!!


http://www.mcr5.org/articals/speed.htm

Ken.
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fievel
  • Member since
    January 2003
  • 277 posts
Posted by fievel on Monday, February 14, 2005 7:02 AM
[:)] Hey, Thanks ! , NZRMac ! That's pretty neat!

Cascade Green Forever ! GET RICH QUICK !! Count your Blessings.

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AntonioFP45
  • Member since
    December 2003
  • From: Good ol' USA
  • 9,642 posts
Posted by AntonioFP45 on Monday, February 14, 2005 7:08 AM
Excellent Link, NZRMac!

Downloaded it.

Thank you!

"I like my Pullman Standards & Budds in Stainless Steel flavors, thank you!"

 


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