Mark Posted March 17, 2018 Share Posted March 17, 2018 Does anybody know or have easy access to measure the diameter of the roof tank filler pipes on the ends of MK1 coaches. I am trying to upgrade some Hornby examples and need to know what size of wire to use. Thanks in anticipation. Regards Mark Humphrys Link to post Share on other sites More sharing options...
RMweb Gold The Johnster Posted March 17, 2018 RMweb Gold Share Posted March 17, 2018 I would be very surprised if the real ones are not 1" diameter, which is about 0.33mm, for 4mm scale coaches. Check it out on a preserved railway if you can, and the distance the pipe stands proud of the roof as well. Link to post Share on other sites More sharing options...
Mark Posted March 18, 2018 Author Share Posted March 18, 2018 Thanks for your reply, but I am hoping someone may have a measured dimension. I think 0.3 is too small. There are some images in Parkin's book which show a roof vent on a catering vehicle of the hook type pipe with a diameter of 7/8th of an inch. The pipe running along the roof adjacent is considerably bigger so I am wondering if the diameter is closer to 1.75" I don't have direct access to a prototype MK 1 at the moment hence my request. Regards Mark Humphrys Link to post Share on other sites More sharing options...
old_grandpops Posted March 21, 2018 Share Posted March 21, 2018 I checked an original drawing at the HMRS Study Centre today and it identifies the filler pipe as 1ins Bore BSP Steel. Regards Paul Garratt HMRS Drawing Archivist 1 Link to post Share on other sites More sharing options...
RMweb Premium MJI Posted March 22, 2018 RMweb Premium Share Posted March 22, 2018 0.5mm brass wire looks fine Link to post Share on other sites More sharing options...
Mark Posted March 25, 2018 Author Share Posted March 25, 2018 0.5mm brass wire looks fine Thank you to everybody who replied to this question. I have been able to measure the fillers of the Mk1 coaches on the Dean Forest Railway and they were 1.4" outside diameter, so 0.45mm diameter is pretty close. Regards Mark Humphrys Link to post Share on other sites More sharing options...
davetheroad Posted March 26, 2018 Share Posted March 26, 2018 I had to mutilate some Bachmann MK 1's to get at the weights so it is useful to know that 0.5 mm wire is suitable as a replacement. A related question is what colour are they. The bacchie ones are black and the Hornby moulded ones are the roof colour, which is correct? Link to post Share on other sites More sharing options...
Bulleidnutter Posted March 26, 2018 Share Posted March 26, 2018 I had to mutilate some Bachmann MK 1's to get at the weights so it is useful to know that 0.5 mm wire is suitable as a replacement. A related question is what colour are they. The bacchie ones are black and the Hornby moulded ones are the roof colour, which is correct? Black to roof line and then roof coloured to the filler pot. Link to post Share on other sites More sharing options...
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