If any of you are also Model Railroaders you will recognize my user name a a producer of scale model train detail parts in brass. We are expanding our line up of HO and O scale locomotive air horns in brass using the latest in 3D drawing design and Resin 3D printing to create masters to be tranfers in to brass via lost wax casting. Now to the part we hope members of this forum can help with - We need photographs detailing the dimensions of the individual horns(trumpets) and the various mounting brackets. For the horns we are looking for over all length, mouth width, Body diameter, Diaphragm width and thickness, For the various mounting brackets pictures of the brackets with out the horns mounted would be best but can use any photos. Dimensions are best shown by placing a ruler or tape measure next to- along side or in front of the feature and taking a straight on photo of the item.
We are looking for this data on any
Nathan H J K P or M series
Leslie A D L S and RS series
Wabco A B and E
Prime PM series
Hancock Any
All mounting bracket styles
Any help getting this data would be greatly appreciated !
Well, hornwhistleboard.com used to be the place, but it’s down and unknown whether it will come back up. In the interim, someone else set up horn-whistle-board.com and most of the collector type guys and actual railroad buffs stay in one of those 2 places.
Yes, that is what referred to incorrectly as a bracket. If you could take a few photos of that with a tape measure showing distances across the flat surfaces to the major intersections that would be very helpful. Mostly I would need the distance across the top Bar, Center Bar, Length of the angled sides, the width of the top and center, over all height and width of the base. I can extrapolate the rest since casting limits won’t allow full detailed reproduction in that small of scale.
ear2ear - Thanks for the drawings. These will work great for the K series and, I am guessing but, it looks like the P series is the same but with a differing diaphragm cover plate that is flat. Do you know if that is correct? If not do you know what other differences they have?
DBO -Thanks for the photos with the dimensions, these are going to be a huge help in drawing these in scale.
Can you get me one more dimension? I need the diameter of the trumpet tube at the base just before the mounting part to the manifold. Where it is still just a round tube. They appear to all be the same diameter. I need that measurement to ensure I get a correct appearing taper to the tubes when I draw them.
There are some differences with the P series - just looking at pictures. I’ve never had a P series. One thing is the raised rectangular area on the side of each bell.
