REPORTING MARKS DRRY ENG. NO. 284 FILE NAME

CYLINDER STROKE 4.250 DATE AQR'D. 12/17/2013 AQR'D. BY

LEFT FRONT LEFT REAR RIGHT FRONT RIGHT REAR FORWARD BACKWARD

INDICATED STEAM PORT MARK 1.314 0.844 1.275 0.835 5 1

0 0

LEFT FRONT LEFT REAR RIGHT FRONT RIGHT REAR LEFT FRONT LEFT REAR RIGHT FRONT RIGHT REAR

Fwd 1 1.353 0.804 1.353 0.759 2.052 1.827 2.320 2.058Fwd 2 1.402 0.755 1.405 0.709 2.564 2.315 2.848 2.550Fwd 3 1.459 0.697 1.466 0.651 3.114 2.854 3.220 2.935Fwd 4 1.572 0.587 1.581 0.546 3.562 3.329 3.613 3.350

Full Fwd 1.669 0.488 1.679 0.453 3.752 3.587 3.775 3.575

LEFT FRONT LEFT REAR RIGHT FRONT RIGHT REAR

Full Bwd 1.514 0.605 1.487 0.558

JGH-12-14-2013

Lake Forest Live Steamers Railway Museum

J. G. Hook

MEASURED PISTON TRAVEL AT CUT-OFF

F O R W A R D

DEERFIELD AND ROUNDABOUT RAILWAYLOCOMOTIVE VALVE MOTION REPORT DATA ACQUISITION Page 1 of 6

REVERSE LEVER NOTCHES AFTER CENTER

drry-vlv-rpt-284-12-17-2013-final

F O R W A R DMAXIMUM INDICATED VALVE TRAVEL

w w w . l f l s r m . o r g

REVERSE LEVER NOTCH BWD OF

CENTER

MAXIMUM INDICATED VALVE TRAVEL

B A C K W A R D

REVERSE LEVER NOTCH FWD OF

CENTER

For further information see Lake Forest Live Steamers Railway Museum at the following link

GENERAL INSTRUCTIONS

1. Valves to be adjusted to minimize forward left and right travel differentials with reverse lever in first notch forward of center or equivalent.2. For backward gear, only full backward left and right travel differentials need be tested.3. For cut-offs, only forward gear need be tested.4. Enter in notes if dead centers, eccentric cranks or eccentrics have been tested or adjusted immediately prior to valve motion report data acquisition.5. If engine is equipped with screw reverser instead of latch lever reverser then notes shall describe means used to convert screw reverse positions to equivalent latch lever positions.

REPORTING MARKS DRRY ENG. NO. 284 FILE NAME

REPORT DATE 12/17/2013 BY

NOTES

FRONT STEAM PORT OPENING

TRAVEL

TRAVEL DIFF.

TRAVEL DIFF.

REAR STEAM PORT OPENING

TRAVEL

TOTAL VALVE TRAVEL

FRONT CUT-OFF

REAR CUT-OFF

FRONT STEAM PORT OPENING

TRAVEL

TRAVEL DIFF.

TRAVEL DIFF.

REAR STEAM PORT OPENING

TRAVEL

TOTAL VALVE TRAVEL

FRONT CUT-OFF

REAR CUT-OFF

Fwd 1 0.039 0.001 2% 0.040 0.549 48% 43% 0.078 0.002 2% 0.076 0.594 55% 48%Fwd 2 0.088 0.001 1% 0.089 0.647 60% 54% 0.130 0.004 2% 0.126 0.696 67% 60%Fwd 3 0.145 0.002 1% 0.147 0.762 73% 67% 0.191 0.007 2% 0.184 0.815 76% 69%Fwd 4 0.258 0.001 0% 0.257 0.985 84% 78% 0.306 0.017 4% 0.289 1.035 85% 79%

Full Fwd 0.355 0.001 0% 0.356 1.181 88% 84% 0.404 0.022 4% 0.382 1.226 89% 84%

FRONT STEAM PORT OPENING

TRAVEL

TRAVEL DIFF.

TRAVEL DIFF.

REAR STEAM PORT OPENING

TRAVEL

TOTAL VALVE TRAVEL

FRONT STEAM PORT OPENING

TRAVEL

TRAVEL DIFF.

TRAVEL DIFF.

REAR STEAM PORT OPENING

TRAVEL

TOTAL VALVE TRAVEL

Full Bwd 0.200 0.039 12% 0.239 0.909 0.212 0.065 19% 0.277 0.929

JGH-12-14-2013

Lake Forest Live Steamers Railway Museum

LEFT RIGHT

F O R W A R D

B A C K W A R D

J. G. Hook

Dimensions in inches. Full backward gear is actual 4th notch back from center.

LEFT

REVERSE LEVER NOTCH BWD OF

CENTER

DEERFIELD AND ROUNDABOUT RAILWAY

REVERSE LEVER NOTCH FWD OF

CENTER

LOCOMOTIVE VALVE MOTION REPORT DATA RESULTS Page 2 of 6

drry-vlv-rpt-284-12-17-2013-final

RIGHT

Lake Forest Live Steamers Railway MuseumDEERFIELD AND ROUNDABOUT RAILWAY

LOCOMOTIVE VALVE MOTION REPORT DEFINITIONS AND ADDITIONAL INFORMATION Page 3 of 6

INDICATED STEAM PORT MARK - The indicator reading at the point where the steam edge of the valve is in line with the steam edge of the port. Used in lieu of port marks placed on the valve stem.

MAXIMUM INDICATED VALVE TRAVEL - The indicator reading at the point where the valve is farthest from the center of its travel.

MEASURED PISTON TRAVEL AT CUT-OFF - The distance the piston has traveled from dead center at the beginning of its power stroke to the point in its power stroke where the steam edge of the valve is in line with the steam edge of the port with the valve moving in the direction to close the steam port.

STEAM PORT OPENING TRAVEL - The maximum distance the steam edge of the valve attains from the steam edge of the port with the port open to admit steam to the cylinder.

TRAVEL DIFFERENTIAL - The difference between the front steam port opening travel and the rear steam port opening travel. Expressed as a dimension or percentage.

CUT-OFF, PERCENT - The percentage of the length of the power stroke of the piston during which steam is admitted to the cylinder.

IN LINE, VALVE EDGE AND PORT EDGE - The position of the valve where an edge of the valve relative to the edge of a port is such that any movement of the valve in one direction will open the port relative to the valve and any movement in the opposite direction will close the port further relative to the valve.

Images below show application of 2 inch throw dial indicator to an inside admission piston valve locomotive cylinder block in order to indicate the position of the valve. The contact point of the dial indicator has been positioned to directly contact the piston valve body, not the valve stem. Determining the dimensions for the indicated steam port marks is made possible by viewing through the valve inspection opening in order to ascertain when the steam edge of the valve is in line with the steam edge ofthe port.

JGH 12/28/2013

Lake Forest Live Steamers Railway Museum

LOCOMOTIVE VALVE MOTION REPORT DEFINITIONS AND ADDITIONAL INFORMATION Page 4 of 6

DEERFIELD AND ROUNDABOUT RAILWAY

Images below show Deerfield and Roundabout Railway engine No. 284 over the "drop table" with hand cranked driving wheel turning device applied in preparation for acquiring data for locomotive valve motion report.

JGH 12/28/2013

Drawing above shows full scale practice hand operated driving wheel turning device, circa 1910.

Lake Forest Live Steamers Railway MuseumDEERFIELD AND ROUNDABOUT RAILWAY

LOCOMOTIVE VALVE MOTION REPORT DEFINITIONS AND ADDITIONAL INFORMATION Page 5 of 6

STEAM = Steam supplied from throttle. EX. = Exhaust passage to exhaust nozzle below smoke stack.

JGH 12/28/2013

Drawing above shows typical full scale practice piston valve cylinder block using independent front and rear valve bushings.

Drawing above shows typical model scale practice piston valve cylinder block using one piece valve bushing.

Lake Forest Live Steamers Railway Museum

LOCOMOTIVE VALVE MOTION REPORT DEFINITIONS AND ADDITIONAL INFORMATION Page 6 of 6

DEERFIELD AND ROUNDABOUT RAILWAY

STEAM = Steam supplied from throttle.EX. = Exhaust passage to exhaust nozzle below smoke stack.

CYLINDER = Passage from piston valve bushing or slide valve seat to cylinder.

Drawings above show typical full scale practice piston valve cylinder block using independent front and rear valve bushings.

JGH 12/28/2013

For further information see Lake Forest Live Steamers Railway Museum at the following link

w w w . l f l s r m . o r g

REFERENCES and ORIGINAL DRAWING SOURCES1. Modern Locomotive Construction by J. G. A Meyer, 18922. Cyclopedia of Locomotive Engineering by Calvin F. Swingle, 1916 *3. Modern Locomotive Valves and Valve Gears by Chas. L. McShane, 1917 *4. Valve Gears by Charles H. Fessenden, 1915REFERENCES ONLY6. Locomotive Valve Setting by Frank Williams, 19307. Locomotive Valves and Valve Gears by J. W. Harding and I.C.S. Staff, 1937

* See LFLSRM recommended technical and historical reading list.

bushings.