1931 NE 69 St.
Oklahoma City, OK 73111
Phone/Fax 405-478-0502
E-MAIL info@mdmlocomotiveworks.com
|
Murray
Design & Manufacturing Corp. 1931 NE 69 St. Oklahoma City, OK 73111 Phone/Fax 405-478-0502 E-MAIL info@mdmlocomotiveworks.com |
PRODUCT IMPROVEMENTS AND NEW DETAILS - NEW SOUND SYSTEM - NEW TRACTION MOTORS - NEW CONTROL SYSTEM -
GP locomotive controllers now have a new function, the ability to set which end of the locomotive is forward. This allows you to plug the control box into a second control plug at the cab end and when forward is selected the locomotive will travel away from the engineer. Also now there is a second control socket on the cab end. When operating two locomotives as a multiple unit (MU), the locomotives can operate prototype fashion, tail to tail. As an option F unit style locos can incorporate this new function along with the controls necessary for the F unit to operate as a trailing unit.
Type M power trucks shock absorber brackets are now laser cut saving the kit builder many hours of tedious labor. Along the same line, the cab doors on both the GP 7/9 and the GP60 locomotives are now laser cut to provide a better product as well as save labor.
Because all of our locomotive customers have requested the powered roof fan option as well as the commercial quality on-board 115 volt battery charger ( 24 volt at 25 Amps ), we now include both items in our powered locomotives.
Air system now has 100% duty cycle compressor.
Lift rings are now lost wax castings.
New locomotive
Due to customer demand we have another F unit in production. It is the FP model which is 4 prototype feet longer than the regular F unit. Our version is 6 3/8" longer than standard and the kit is $200 more than regular F kit.
Added details
We now are offering GP 7/9 headlights and GP 7/9
sand hatches. Also to improve the details on the front and rear of your locomotive, we now
include brake lines with angle cocks and glad hands. As an option, MU signal
hoses with elbows, hose, glad hands, and mounting bracket are available. Another
new item is sand hatch for "F" units, see price list.
Enhanced sound system. Note we have sample sounds .
We now have a new sound system utilizing a Phoenix Sound Systems "Big Sound " sound board which stores sounds as 16 bit sound samples giving more fidelity and realism. The new sound systems incorporate the following features:
Engine sound specific to particular locomotive:
F7 and GP7s with 1500 HP 567B engines
F9 and GP9s with 1750 HP 567C engines
Medium HP units with 645 engines such as GP38 or GP40s
High horsepower locomotives with turbo chargers like our GP60 locomotive line.
Alco's and GE U-boat engine sounds availably by special request.
Sound system characteristics:
At initial system turn on there is engine start up sound and periodic air releases while locomotive is at idle. Engine sound increases in volume as locomotive is notched up then fades so the gear and turbo charger whine is more prominent when the engine is coasting or slowing ( if turbo-charged version ). Brake squeal is heard when engine speed is reduced.
Bell and multi chime horns standard with optional single chime available for F units or GP9 locomotives.
Automatic sound system ( as supplied with our powered locomotives) senses motor voltage changes and notches the engine sound up or down as appropriate. Also includes a volume control on the control box.
Manual version is supplied with a hand held control box incorporating the following: potentiometer to increase engine speed, horn button, bell switch, volume control, power switch. Also included are cabling with plug and socket for disconnecting unit from locomotive.
Both models come complete with amplifier, speaker, necessary wiring components, complete instructions, drawings, and construction photos.
Have been completely redesigned using a ½ HP permanent magnet low speed / high torque motor and a fabricated steel gearbox.
The motor change allowed us to completely redesign our electronic control system. The new controller is much simpler to wire and has reversing and dynamic braking built in .
Many new system features make it a complete power control system.
Battery equalizer to supply 12 volt power for the auxiliary systems from the 24 volt traction batteries and to insure that all batteries supply power at an even rate.
Fuse block with ground terminals to supply 12 volts to switches for controlling auxiliary systems.
Circuit breaker to protect main batteries along with fuse links to protect motors.
Battery power level meter so you can monitor battery condition.
All necessary wiring components, wire, terminal blocks, fuses, wiring terminals, switches, mounting plates, control cables and plugs, hardware and other needed items.