Amazing what you come across

[Keith Orpin]

Hi Grant,
Thanks for the reply, and having now checked out the design records, I reckon that what I found a few days ago was the remains of a 2-3 Ton trailer, see attached. In the text for this type of trailer, it mentions the use of C15 springs, and hydrualic over run brakes. The other trailers look like they have additional springs, both back and front to cope with the higher capacity. They (4 Ton) type trailers also have a vacuum operated servo brakes fitted, as you suggested.
Regards
Keith