Scale MPH

[Anonymous]

Some time ago I read an article on how to figure scale mph but can't find the article. It said something about timing the loco travel from point A to point B.

Can someone either post how to figure scale mph or know of a link?

For everyone's benefit all scales would be nice. [:)] I am interested in HO. [8D]

Dave

[Anonymous]

Some time ago I read an article on how to figure scale mph but can't find the article. It said something about timing the loco travel from point A to point B.

Can someone either post how to figure scale mph or know of a link?

For everyone's benefit all scales would be nice. [:)] I am interested in HO. [8D]

Dave

[IRONROOSTER]

I don't remember the article, but one approach would be to divide 5280 (feet in mile) by your scale (87 for HO) to get a scale mile (60.7 feet in HO). Time how long it takes your loco to travel that distance on your layout. and divide 1 hour by that time to get how many miles you could travel in one hour (miles per hour). So if you mark off a 60.7 foot run and your loco takes 75 seconds you get 3600 / 75 you get 48 smph (3600 sec = 60 sec * 60 min = 1 hour)). If you have a shorter run then multiply the time by the ratio (for 10 feet in HO that would be 60.7 / 10 or 6.07).
Hope this helps
Paul

[IRONROOSTER]

I don't remember the article, but one approach would be to divide 5280 (feet in mile) by your scale (87 for HO) to get a scale mile (60.7 feet in HO). Time how long it takes your loco to travel that distance on your layout. and divide 1 hour by that time to get how many miles you could travel in one hour (miles per hour). So if you mark off a 60.7 foot run and your loco takes 75 seconds you get 3600 / 75 you get 48 smph (3600 sec = 60 sec * 60 min = 1 hour)). If you have a shorter run then multiply the time by the ratio (for 10 feet in HO that would be 60.7 / 10 or 6.07).
Hope this helps
Paul

[Anonymous]

For my HO calculation, my LLE7 loco does a 40 foot oval in 20 seconds= two,multiplied by 60=120MPH

Not very scientific but it works for me.

[Anonymous]

For my HO calculation, my LLE7 loco does a 40 foot oval in 20 seconds= two,multiplied by 60=120MPH

Not very scientific but it works for me.

[Anonymous]

IronRooster,

Thank you! This is what I was looking for.

[Anonymous]

IronRooster,

Thank you! This is what I was looking for.

[jrbarney]

Dave,
If you go to the Index of Magazines on this site and enter the search term, "scale speed," you'll get a listing of articles on the topic. Many of them are in the NMRA Bulletin, but I don't know if you have a file of back issues. In the "Model Railroad Handbook," edited by A. C. Kalmbach and published in 1971 by Fawcett Publications, Inc., there's even a nomogram Scale Speed Chart authored by R. J. Hoffman with index points for O, S, OO and HO..
Bob

[jrbarney]

Dave,
If you go to the Index of Magazines on this site and enter the search term, "scale speed," you'll get a listing of articles on the topic. Many of them are in the NMRA Bulletin, but I don't know if you have a file of back issues. In the "Model Railroad Handbook," edited by A. C. Kalmbach and published in 1971 by Fawcett Publications, Inc., there's even a nomogram Scale Speed Chart authored by R. J. Hoffman with index points for O, S, OO and HO..
Bob

[IRONROOSTER]

Your welcome.
Enjoy
Paul

[IRONROOSTER]

Your welcome.
Enjoy
Paul

[Anonymous]

September 2003 RailRoad Model Craftsman:
page 81:
"Scale miles-per-hour at a glance"

Real world:
V=velocity (feet per second)
t=time in seconds
S=speed (miles per hour)
D=distance in feet

V=D/t velocity equals distance divided by time

S=V/1.466 speed equals velocity divided by 1.466

[Anonymous]

September 2003 RailRoad Model Craftsman:
page 81:
"Scale miles-per-hour at a glance"

Real world:
V=velocity (feet per second)
t=time in seconds
S=speed (miles per hour)
D=distance in feet

V=D/t velocity equals distance divided by time

S=V/1.466 speed equals velocity divided by 1.466

[n2mopac]

Here is a link to a great operations page that has a built in scale speed calculator for most scales. It will probably help.
http://home.cogeco.ca/~trains/rroperat.htm
Also, here is one more link to a great operations article with a chart for scale speeds.
http://www.gatewaynmra.org/designops.htm
These should help.
Ron

[n2mopac]

Here is a link to a great operations page that has a built in scale speed calculator for most scales. It will probably help.
http://home.cogeco.ca/~trains/rroperat.htm
Also, here is one more link to a great operations article with a chart for scale speeds.
http://www.gatewaynmra.org/designops.htm
These should help.
Ron

[Anonymous]

n2mopac,

Your first link "Model Railroad Operations" is great for us newbies. I found a lot of great information.

THANKS!

[Anonymous]

n2mopac,

Your first link "Model Railroad Operations" is great for us newbies. I found a lot of great information.

THANKS!

[Anonymous]

Thanks to all for the feedback. I have learned a lot from your inputs.

[Anonymous]

Thanks to all for the feedback. I have learned a lot from your inputs.