Have there been any O Scale or even just O Gauge actual Pressure-Differential Covered Hoppers?

Weaver did an ACF 4-Bay hopper in the Pressureaide paint scheme in 2005, according to their online archives.

There has not yet been an O Scale 3-Rail model that is the authentic, distinctly detailed model of the ACF Pressureaide Center Flow 4-Bay Covered Hopper. The roofwalks, bays, pneumatic piping, and end bracing are very unique to these hoppers.

Atlas RR made the ACF Pressuraide in HO and N scales, while Atlas O has not done the same model in O Scale.

Andrew

How about posting a prototype photo, so we can all see what you are talking about. I'd like to see the differences between this and an ordinary hopper or an Airslide.

This is an image of the underside of an Atlas RR HO scale model.

A photo of a real ACF Pressuraide Covered Hopper with SHPX reporting marks.

Andrew

here are some more P-D hoppers... No one has done a detailed O guage P-D car. Only O scale brass!


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LocoPhotos.com

RailcarPhotos.com

Here's a photo of my scratchbuilt Seaboard Air Line Whalebelly Hopper:

Built from a Weaver 50 foot tankcar.

SAL and CB&Q had these plus a few others.

These had air pressures of 50-80 psi and a single chamber.

Here's a link to what these cars looked like:

http://www.qconnection.biz/Whalebelly%20Proto.htm