Winton Brown Engineering Data

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Download "Winton Brown's Engineering Data" (PDF, Version 2013/05/04)

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 Little Engines 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

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