From Deseret News archives:
Heber Valley Railroad
Heber Valley Railroad offers a variety of scenic excursions and entertainment options. Throughout the summer, two excursions a day go from Heber to Vivian Park in Provo Canyon. On most days, a shorter excursion to Soldier Hollow is scheduled.
On selected dates, the railroad also offers an evening Lakeshore Social, a Comedy Murder Mystery train, a combination train/haywagon/picnic ride, a BBQ Special, Heber Valley Hoedown, Moonlight/Campfire Sing-Along, Raft 'n' Rail Adventures and more.
Seasonal options include a Pioneer Day Fiddlers 'n' Fireworks train, Haunted Canyon excursions in October, the Polar Express in November and December, and winter excursions combining tubing and sleigh rides.
For most rides, tickets are $30 for adults; $20 for children and $23 for seniors. Special-excursion trains may cost more or less, depending on the ride.
The depot is closed on most Mondays throughout the summer.
For more information and schedules, visit www.hebervalleyrailroad.org or call 435-654-5601.
How steam locomotives work
A coal-powered fire heats water in a boiler to the point that it creates steam.
As the steam expands, pressure builds up.
By way of a regulator or throttle, valves force the steam into cylinders that contain pistons. The expanding pressure of the steam causes the piston to move and thus turn a connecting crankshaft and flywheel.
When the piston reaches the right side of the cylinder, a slide valve directs the steam behind the piston, which then moves the piston to the left. The piston rod pulls the flywheel around to complete one turn.
Steam in the left side of the piston escapes through an exhaust. The escaping steam is still under pressure, and makes a "choo" sound as it leaves the cylinder. As the train starts rolling and the pistons gain speed, the effect is the familiar "choo choo" sound of a steam engine.
Water is mechanically injected or pumped into the boiler, and must be kept at the correct level at all times.
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