> I have a photo of Ann Arbor GP-35 #387.
> I want to model it but have some questions.
> There is a dual headlight in the low nose and
> a pair of lights in the cab roof.
> The ones in the cab roof have cowls on the underside of the lamps.
> The bottom lamp is red.
> Are these marker lights?
> How did they operate and for what purpose?
The lights on the front of the cab are a Pyle Gyralight. They were
intended to be used as additional warning lights. In practice, the Ann
Arbor crews didn't really make much use of them. In fact, it was unusual
enough for them to be used that most folks I know who lived along the
Annie can remember every time that they saw the Gyralight turned on. The
clear lamp and red lamp would alternate, one on and the other off.
The visors on the underside of the lights on the cab are not usual on
low-nosed diesels- they reduce the glare for the engine crew.
The two RS-1s the Ann Arbor owned also had Gyralights. Nobody I've
spoken to ever saw these in use on the RS-1s. What makes this kinda
funny is that the RS-1s had an extra housing for a twin sealed-beam
headlight on the top of the long hood end because the Gyralight was
installed in the position normally occupied by the headlight. The RS-1s
also had a short hood which never received the steam generator the Ann
Arbor had planned to install in the event they were not given permission
to discontinue passenger service in 1950.
This came up in recently in conversation with a couple of Ann Arbor
modelers when we were discussing adding DCC and lighting effects to teh
RS-1s and GP35s.
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