Winton Brown Engineering Data

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Preface
Winton Brown founded the Winton Locomotive Works Company in Danville, California in the early 1960's. Winton was a mechanical engineer by trade. He brought a set of finely honed engineering skills to the company, designing his locomotives for maximum strength, maximum weight on the drivers and easy, modular construction.

The Winton catalog included a section simply entitled “Engineering Notes”. Behind that humble title lay 17 pages of notes, drawings, formulas and tables essential for designing and building model steam locomotives. In the 1960's, if you were building a loco from scratch which wasn't adaptable from a Martin Lewis design the Winton catalog engineering section was considered the bible and many used it to design parts of their locos, especially boilers.

Winton's engineering data is just as valuable today. It offers, among other things, tips on improving the performance of practically any steam locomotive. An additional article, written by Winton which originally appeared in the Nov/Dec 1954 edition of The Miniature Locomotive, is included in this publication. It points out the importance of superheated steam and works through an example to compute the ratio of water to steam to maintain maximum operational capacity.

Kenneth Shattock, IBLS secretary of the North American Region, encouraged the creation of this document. He realized the importance of preserving this important asset for the live steam community, and increasing its general availability.

The data has been checked against modern standards and updated as needed. Additional helpful tables have also been included. Other modifications have been made to aid the reader in understanding the concepts described by Winton.

Table of Contents
PREFACE INTRODUCTION HORSEPOWER TRACTIVE EFFORT CYLINDER, PORT SIZES AND STRENGTH OF BOLTS BOLT SIZES AREAS OF STEAM PORTS AND PIPES PISTON ROD SIZE CROSSHEAD GUIDE CRANK-PIN DIAMETERS AND LENGTH DRIVING AXLE JOURNALS, DIAMETER AND LENGTH TENDER AND CAR JOURNAL SIZES BOILER CONSTRUCTION GRATE AREA DIAMETER AND NUMBER OF TUBES WATER CONSUMPTION STACK DIAMETER AND LENGTH POWER TO OPERATE PLAIN SLIDE-VALVES LOCOMOTIVE HAULING POWER SIZE OF LOCOMOTIVE SPRINGS DEFLECTION OF LOCOMOTIVE SPRINGS ADHESION CONCLUSION TABLES Table I: Circumference and Areas of Circles Table II: Inches to Decimals of a Foot Table III: Inches to Square Root to Square Table IV: Strength of Model Engineers Hex Head Bolts Made of Brass – Coarse Thread Table V: Strength of Model Engineers Hex Head Bolts made of Brass – Fine Thread Table VI: Mean Effective Pressure Constants Table VII: Volumes of Saturated Steam Table VIII: Strength of Materials Table IX: O-Rings used as Valve Seats Table X: Pattern Shrinkage Allowance Table XI: Standard Keyways and Setscrews Table XII: Proportionate Weight of Castings to Weight of Wood Patterns Table XIII: Length of Pipe Thread Table XIV: Approximate Weight of Various Metals Table XV: Approximate Weight of Various Liquids How to Figure Water Consumption for Miniature Steam Locomotives Table XVI: Cubic Inches Steam per Cubic Inch Water Calculating Pony Truck Pivot Location with Baldry's Rule Locomotive Turning Radius

Revisions

 * 2013/05/04 - Corrected name of publication "The Miniature Locomotive" on page 3
 * 2013/04/16 - Corrected error on Page 17, thanks goes to Dick Morris
 * 2013/03/29 - Added Pony Truck Calculation and Loco Turning Radius
 * 2013/03/25 - Original Version