Climax locomotive
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A Climax locomotive is a type of geared steam locomotive built by the Climax Manufacturing Company, of Corry, Pennsylvania. These had two steam cylinders attached to a transmission located under the center of the boiler, which sent power to driveshafts running to the front and rear trucks. Some 1,000-1,100 were built in three classes between 1888 and 1928.
A small Class B Climax locomotive owned by the Oregon Lumber Company on display at the Railroad Museum of Pennsylvania
Fruit Growers Number 3, a Class C Climax locomotive on display at the RailGiants Train Museum in Pomona, California
Class B Climax locomotive Number 1694 at Emerald station preparing for a charter tour on the Puffing Billy Railway in Victoria, Australia
Truck with differential as proposed by Gilbert, which was only used on the first Climax locomotives
Geared steam locomotive
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A geared steam locomotive is a type of steam locomotive which uses gearing, usually reduction gearing, in the drivetrain, as opposed to the common directly driven design.
The Shay is among the most popular geared steam locomotives
A wheel on a Shay locomotive. A shaft (seen towards the right of the photo) transferred power to a bevel gear (partially visible under a cover), which transferred power to the wheel.
Class C Shay (three driven trucks)
Class C Climax locomotive