REPOWERING EXAMPLES


In general, examples are not "COOKBOOK", but are intended to provide ideas and methods, which can be used on similar individual projects. Since the methods used are varied, most of these can be applied to other projects with some modification. In many cases, combining parts from several examples may solve a specific problem. In some, various approaches were examined and drawn with XCAD and found to be impractical. Being inherently lazy, the easiest, acceptable method was chosen. Availability of parts at development time was a large influence.

In some cases, more specific examples of methods are found in similar jobs. Several examples have alternative solutions listed under different methods. In the Mantua MU-2 power truck case, both methods may be combined to reduce speed to about 40 SMPH for trolleys and industrial switchers. Many manufacturers use the same basic mechanism on different wheel arrangements by varying number of drivers and pilot or trailing truck wheels with modifications to frame only.

For motor evaluation and improvement see MOTOR EXAMPLES

Before proceeding on any solution, examine the methods used to determine practices and to avoid problems.

Examples sorted by METHODS used and TOOLS required.


READY TO MOUNT SELF CONTAINED POWER UNITS.

COMMON HOBBY TOOLS.

DRILLING, TAPPING AND FLOOR OR FRAME SURGERY
.
END MILL OR COUNTERSINK FOR FLAT BOTTOM HOLE.

MOTOR MOUNTS

POWER TRUCK SURGERY

POWER TRUCK SURGERY--NEW TOWER GEAR RATIO

NEW GEARS-NEW MOTOR-NEW OR MODIFIED MOUNT

REQUARTERING-NEW DRIVERS, AXLE BEARINGS AND MOTOR

REQUARTERING-NEW GEARS-NEW MOTOR MOUNT

REQUARTERING-NEW GEARS W/ IDLER BOX--NEW MOTOR & MOUNT--FRAME MODIFICATION
  • MANTUA A5 ___ from 26:1 to 36:1 gear ratio--new motor & mount--drawing--procedure--104 to 21 SMPH

REQUARTERING--NEW MOUNT--STEP GEAR W/ PILLOW BLOCK--FRAME MODIFICATION


MODEL DIE CASTING INC. ___ (ROUNDHOUSE) must be given credit for inspiring the idea behind these double reduction gear trains.
  • ARBOUR A3 ___ to 108:1 gear ratio--new motor--19 SMPH
  • BOWSER PRR A5 ___ from XX:1 to 108:1 gear ratio--new motor using modified MDC mount + flywheel--19 SMPH
  • MANTUA A5 ___ from 26:1 to 108:1 gear ratio--new motor--drawing--computation--procedure--104 to 19 SMPH
  • PENN-LINE CAREY N1 ___ from 29:1 to 72:1--90 to 43.75 SMPH

REQUARTERING--CYLINDER AND BOILER MOUNT MODIFICATION
.
  • MDC PRR E6 ___Drivers from 75" to 80", lower boiler at cylinder block and cab support.



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