Hi,
Over some months now one day a week a friend has brought his Mercer traction engine to have help modifying it to a showman's engine. It has been quite a lot of work first to get it to work, then the modifications, it is on the home straight now just the fitting a boiler top up valve in the belly tank to finish. It runs quite well though there is a bit of a bend in the crankshaft and as there aren't any spares available and as it works, rather than make a new crankshaft the owner is going to live with it. A bit of a video at:
Take care Tony.