how do find out fast a ho engine gos?

[union pacific 844]

in mph

[rbryce1]

Time your engine in feet per second.

There are 3600 seconds in an hour.  So, 1 ft / sec times 3600 sec = 3600 ft/hr.  Multiply your speed in ft/sec times 3600 to get your speed in ft/hr.  There are 5280 feet in 1 mile.  Divide your speed in feet / hr by 5280 feet/mile to get your speed in mph.

If your engine is traveling at 1 foot per second,

1 ft/sec times 3600 sec/hr is 3600 ft/hr.  3600 ft/hr divided by 5280 ft/mile is .6182 mph.



4 ft in 3 sec = 4/3=1.33 ft/sec times 3600 sec/hr = 4800 ft/hr divided by 5280 ft/mile = .91 mph.


This gives real world speed.  To get scale speed, multiply your real world speed by 87 (HO is 1/87th scale).

.91 real mph * 87 scale = 79.17 scale mph.

[Jerrys HO]

UP

Try this calculator.

http://home.cogeco.ca/~trains/rroperat.htm

Jerry

[rbryce1]

Jerry, Jerry,

Always the hard way !!!

[Jerrys HO]

RB

blame it on richg as he provides us with all the great links that I store in my favs.

Jerry