The photo above shows the different lengths tks for photos and posts guys.
Yes I have a few of the K-Line style at the top of this photo brown trailer. They had them in the toy stores in plastic different types they are perfect and I use these with the old Lionel MiJack trailer loader on my layout. The K-Line were same design but cast in metal that fell apart and were heavy. I have a K-Line spline 5 car set with trailers and the trailers started to fall apart.
With a lot of TOFC in the 70's 80's using 40 foot trailers I am suprised that we do not see a lot more of these available with O Gauge to fit flats??
I had been looking at plastic sheets at the hobby shop to see if I could find a good corrigated look for a typical trailer, perhaps try to scratch build a fleet??
In the photo below Tokin 1/53 trucks/trailers upright they are best looking but undersized and heavy for a long string of Trailer on Flat cars.
On sides top left ribbed AMT 1/43 plastic model has large size wheels to large and to wide and tall, BC Rail upside down 35 foot 1/48 scale Weaver trailer, below this the ones I am building for my TOFC Berkshire Valley 40 foot 1/48 Scale. Top right??? forget where this came from someone was making these trailers many years back in 1/48 scale I think at 48 foot did not like the quality did not get any more, Blue/Flag Tokin 1/53 48 foot I think! Great northern upside down, Atlas 1/48 scale ?48 foot looks sharp a bit heavy but not to bad for TOFC.
But really the only thing that looks good for a 40 foot trailer for 1/48 is the Berkshire valley kit. If you click the link at top of page you will see all the different trailer kits that you can buy.
Photos following Berkshire kit on the Weaver flats I repainted. Trailers are $ pricy would be nice if some source for cheap light weight options for a long string of trailers on flats for the 70's/80's????