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UP 4-6-6-4 challenger decoder install (cont).

Normally, after installing the TCS 1517 decoder, I use decoderpro to test that all is good so I don't 'blow' a decoder but I've been getting 302 and 306 errors.  I think I've got the wrong com port but will have to do some more checking.  

Fortunately, all the wires were connected correctly and all's working.  I had to use the throttle to load in the address on the mainline, insuring all other engines are 'off line'.  The engine got the usual treatment: 8 pin connector between engine and tender, 4 pin connector between drivers and boiler, 2 pin connector between boiler and driver engine mounted headlight. 

Sound and all 13 LED's working (headlight is sitting on the drivers).  Adjusted the chuff rate to get 4 per revolution: this is always too high.

UP 4-6-6-4 Tenshodo 47

The original weight was pretty wimpy with about a 3/4" square so a new one was created.  Some 1/16" thick lead 3"X9" rolled into a rod. 

UP 4-6-6-4 Tenshodo 48

Inserted from the front.

UP 4-6-6-4 Tenshodo 49

The existing two holes were used to drill into the lead and use two phillip head screws to secure the lead weight.  Also, had to drill a hole for the front drivers support.  The spring inside was replaced with a stronger spring to support the additional boiler lead weight.

UP 4-6-6-4 Tenshodo 50

I put the two sets of driver engines on the boiler and tested the running characteristics and it was barely moving: turns out I had to cut some of the boiler to make room for the front engine's universal shaft. 

The universal is white but I put some grease inside and some tape around it to insure it is quiet. 

UP 4-6-6-4 Tenshodo 51

The shaft now has enough room to clear the boiler. 

MMM; need to clean the lens, again!

UP 4-6-6-4 Tenshodo 52

Final assembly.

Detailed the cab with some white and red paint. 

UP 4-6-6-4 Tenshodo 53

All lights working.  

MMM: need to put some numbers on that front plate!

UP 4-6-6-4 Tenshodo 54

Still got one up on the nice stuff that MTH and BLI haven't done, yet, with their engines: running board lights. 

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Don't remember if they've adding firebox glow yet!

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Some detailing on the boiler.  Painted the insides of the smoke stacks, hand rails and piping.  Red for knobs and brass for whistle and bell. 

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Pop valves painted.

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Red on the grate shaker wheels. 

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Tender with back up head lights on...

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and off.

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A big engine but not compared to the C&O M-1 steam turbine!

Next is the road test pulling some freight on the mainline.

UP 4-6-6-4 Tenshodo 61

Attachments

Images (16)
  • UP 4-6-6-4 Tenshodo 47
  • UP 4-6-6-4 Tenshodo 48
  • UP 4-6-6-4 Tenshodo 49
  • UP 4-6-6-4 Tenshodo 50
  • UP 4-6-6-4 Tenshodo 51
  • UP 4-6-6-4 Tenshodo 52
  • UP 4-6-6-4 Tenshodo 53
  • UP 4-6-6-4 Tenshodo 54
  • UP 4-6-6-4 Tenshodo 55
  • UP 4-6-6-4 Tenshodo 56
  • UP 4-6-6-4 Tenshodo 57
  • UP 4-6-6-4 Tenshodo 58
  • UP 4-6-6-4 Tenshodo 59
  • UP 4-6-6-4 Tenshodo 60
  • UP 4-6-6-4 Tenshodo 61
  • UP 4-6-6-4 Tenshodo 62
Last edited by samparfitt
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