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Post by nebrzephyr on Nov 22, 2014 5:51:39 GMT -8
On the Santa Fe Genesis F7 there are two head lights. The lower on has 2 clear bulbs and the upper one has 1 clear, 1 red. So on the prototype I assume that the lower head light was the main running light. But my question is how was the upper head light used? I'm *guessing* it was not use in normal running operation.
Would love to know how these were use and what was the light effect.....Mars, etc,
Thanks. Bob
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Post by sp8299 on Nov 22, 2014 7:27:42 GMT -8
E/F units with warning lights typically had the standard headlights in the lower housing, and the warning light, whether it was Mars brand or Gyralite, in the upper housing. The clear warning light would be used in normal running along with the normal headlight, with the intention, of course, to serve as a warning to motorists or pedestrians along the right of way. As for the red light, some roads, like SP, used them as an emergency warning light for other trains; if the brake pipe pressure dropped below a certain point, like during an emergency brake application, the clear lights would go out, and the red warning light would activate, to serve as a warning to approaching trains that there is a train in emergency, and to be on the lookout for possible derailed cars or possible other hazards as a result and/or cause of the emergency brake application. Santa Fe was unique in that they used a rotating warning light assembly on their F-units (I'll let the Santa Fe experts chime in as to which units were so equipped), instead of the more common Mars brand lights of the era. More info here: trainweb.org/gyra/sf.htmtrainweb.org/gyra/photo/sf_lts.htm
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Post by rockfan on Nov 22, 2014 10:44:15 GMT -8
On my Rock Island F7's with the same headlight arrangement, the red light comes on when running in reverse, run it on a test track and see what it does.
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Post by bnsf971 on Nov 22, 2014 11:03:28 GMT -8
If it was a DCC ready model, all the white headlights will be connected to the two common ouputs in the center of the front of the light board, between the power supply connections. You can then remove the (power, I think) wire to the bulbs, and connect one wire for one bulb to the F6 output lead on the board, and the other to the F5 output lead on the board. You can then remap your functions so the F5 is Mars or Emergency (whichever lead you have connected to whichever bulb), and F6 is the other.
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Post by Deleted on Nov 22, 2014 12:55:44 GMT -8
www.trainweb.org/gyra/photo/sf_lts.htmThe headlight in the nose door is the dual sealed beam headlight. The upper housing is a rotating Mars light. On the ATSF the light oscillated and rotated. Programming to be a Mars is correct. The upper clear could be turned on when the train was in motion, which was normal. It was also not abnormal to have a train only having the headlight in the nose door lighted. The red light on the Mars could be turned on by the engineer during backing moves. The red light would also go on and the upper clear and lower headlight would turn off when the train made an emergency brake application. On the Genesis Tsunami equipped models, the headlights and Mars lights are already programmed. If you have a DCC ready model, the upper clear Mars is wired in with the headlight. It will not have effects. You may need to move the wires for the upper headlight to the F5 pad. The red Mars may only be a lens and have no bulb. But Athearn makes changes to the manufacturing of these units it seems with every run, so you may or may not need to route bulb wires.
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Post by nebrzephyr on Nov 23, 2014 7:16:15 GMT -8
Thanks guys for the info. My omission in not stating I was using DCC. So, I need to open up the units, it is a Tsunami equipped. I will put - - nose door 2 bulbs on the front F0 tabs - upper clear on FX5 tabs - upper red on the FX6 tabs
That should give me prototypical operation.
Also looks like from the link Jim posted I could change out the upper red for a clear and that would also be prototypically correct. The question I guess is can you get a prototypical MARS effect with only one bulb? Bob
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Post by Deleted on Nov 23, 2014 8:04:41 GMT -8
Thanks guys for the info. My omission in not stating I was using DCC. So, I need to open up the units, it is a Tsunami equipped. I will put - - nose door 2 bulbs on the front F0 tabs - upper clear on FX5 tabs - upper red on the FX6 tabs That should give me prototypical operation. Also looks like from the link Jim posted I could change out the upper red for a clear and that would also be prototypically correct. The question I guess is can you get a prototypical MARS effect with only one bulb? Bob The Tsunami with the upper clear is very good. I'd leave the lower bulb red as the vast majority of Santa Fe passenger F's were seen with upper clear and lower red. The lower red is really cool when your doing a backing move and the red oscillates. On the prototype there was a red lens clipped in front of the the lower bulb which was clear. My guess is on the units where there were two clear bulbs, the red lens was misplaced or broken. I'd also hazard a guess that it was late in Santa Fe's passenger service when the FP45's were on the horizon. Also on the Santa Fe prototype even if both bulbs are clear only the top bulb would illuminate in forward movements. The lower bulb was meant to be the emergency and back up light on Mars Lights. There were dual clear Mars lights like on SP 4449. Some Mars lights were also tri-bulb, which was used by Illinois Central. The IC had two clears and one red on its E9's.
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Post by nebrzephyr on Nov 23, 2014 10:42:26 GMT -8
Thanks Jim for the further info. Bob
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Post by bnsf971 on Nov 24, 2014 4:22:58 GMT -8
I have a Genesis F2 with those bulbs. I'll take a short video of the lighting, post it on Youtube, and provide you with the link this evening.
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Post by bnsf971 on Nov 25, 2014 9:11:28 GMT -8
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Post by nebrzephyr on Nov 25, 2014 19:23:17 GMT -8
Terry....thanks for the vid. It looks like you engine is configured the way I plan to proceed. Bob
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