hi all. just a few more pics. the workshop is a bit full at the moment so have been working on the computer. the na i have changed, it now has a split chassie and solid drivers. both the na and the harman have there parts cut on a cnc mill. parts are either brass or plastic. in hindsight it is far more productive i think to design the locomotive completely. But i guess i can do a better job of it now as from the earlier i have a good idea of what can be machined and what cannot be.