KofII(#5577) with #60955 decoder.

This page shows installing #60955 high efficiency decoder for MAXI loco to KofII.

Tasks of the project:

• The KofII loco equipped with old gauge 1 digital circuit.
• There are genuine conversion circuit board from marklin, but it is no longer available as far as I researched.
• I installed #60955 high efficiency decoder for MAXI loco to get better running character and some functions.
• Install cab lighting and horn(buzzer) as a extra function.

Arrangement of equipment:

• Arrangement with #60955 high efficiency decoder for MAXI loco.

• Original arrangement with old gauge1 decoder.

Points:

• #60955 high efficiency decoder for MAXI loco fixed in backward of engine room.
• Additional circuit board mounted over the decoder.

Details:

<Decoder & Additional Circuit Board>

• #60955 high efficiency decoder for MAXI loco fixed in backward of engine room. The decoder fixed to body by plastic screw and small plate at the place of yellow allowed pint.

• Additional circuit board fixed by C shape metal fitting above the decoder.
  • Connecters for additional function output.
  • Connecters for lights
  • Connecters for rail and motor.
  • The voltage for the head light is 1.4 times higher than conventional AC mode(by means of rectifier and condenser), I added Resistor for head lights(68 ohm) to head light circuit.

• The #69055 decoder is a little wider than engine room, I scraped inner wall of engine room about 1.5mm for each side.

Buzzer:

• A Simple DC24V buzzer for horn sound.
• The buzzer directly connected to f1 output.
• The buzzer is put in under frame behind front apron.

Cab lighthing:

• A normal lamp (KATO room light for N gauge coach, DC12V) installed under roof of cab.
• The series resistor(2x68 ohm=136 ohm) for justify voltage of bulb.
• The lamp connected to f2 output.

Conclusion:

• The KofII got easily got new digital format 'brain'
• The slow running character is very good by means of superb control ability of #60955.
• The horn by buzzer gives much fun.
• The cab lighting is also very attractive.

Copyright © 2000 by Jun Maeda / KOBE JAPAN