Original prototypes using RH chassis?

[kandnwlr]

Planning for 2015 is already underway on the K&NWLR.

Question: What prototypes out there, as yet unavailable or previously built, exist that could use a Roundhouse Chassis?

I´m open to all geographies and loco sizes, though I would be aiming for 16mm rather than 7/8ths, so smaller locos are more difficult. It would be helpful if there were plans in existence of the real thing, though photos are always useful.

All suggestions gratefully received.

[bessytractor]

My best mate used a Mildred chassis to make a Kempton waterworks engine