Penrhos1920 Posted January 16, 2012 Share Posted January 16, 2012 This may appear to be an odd question, but which head light is brighter on DMU (assuming that there is a difference)? The day running or the night running headlight? Is the day time headlight always on the left when facing the unit or does it vary between classes? Link to post Share on other sites More sharing options...
RMweb Gold big jim Posted January 16, 2012 RMweb Gold Share Posted January 16, 2012 They all appear to be the same brightness day or night on the units ive driven (142,15x,165,168,175), obviously differening between classes and 142 units dont generally have day or night, some refurbs have apparently. My memory device is "right, not night", sometimes the day light can be better at night depending on where it is pointing! Loco wise the night light on a 66 (bemac type) can be very distracting in the fog wirh massive glare back Link to post Share on other sites More sharing options...
Penrhos1920 Posted January 17, 2012 Author Share Posted January 17, 2012 So why are there different headlights? Is one 'dipped' and the other 'main beam'? Link to post Share on other sites More sharing options...
CWJ Posted January 17, 2012 Share Posted January 17, 2012 Quote from Railway Group Standard GM/RT2483 (Visibility Requirements for Trains): "The forward facing front-end of the leading vehicle of a train shall be fitted with no fewer than two fixed head-lamps. At least one head-lamp shall be suited for day-time operation and at least one other for night-time operation. Only one fixed head-lamp is required to be lit at any time but additional lamps of both types are permissible on either side of the vehicle front. In normal operation during daylight the day-time head-lamp shall be lit, and during the hours of darkness the night-time head-lamp shall be lit... The night-time head-lamp shall be located on the right hand side of the vehicle when facing the front of the vehicle." I believe the reason for a seperate night-time lamp is that the daytime lamp (which needs to be obvious even in bright conditions) might dazzle oncoming drivers when it is dark. One notable exception is Class 91 and MkIV sets on the ECML, which seem to display both headlights at all times. This may be due to the fact that they operate at 125mph but still have their original (not spectacularly bright) headlights. Further details, including marker lights, tail lights and yellow warning panels, can be found in this document: http://www.rgsonline.co.uk/Railway_Group_Standards/Rolling%20Stock/Railway%20Group%20Standards/GMRT2483%20Iss%201.pdf Cheers, Will Link to post Share on other sites More sharing options...
Penrhos1920 Posted January 17, 2012 Author Share Posted January 17, 2012 Thanks Will. I've read through more of the standard and night time lights do have to be duller. Now I'm off to change the resistor in my 153 conversion that has both types of light working on DCC. Link to post Share on other sites More sharing options...
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