Lil Mo Vertical bottle frame engine

[bobs7-62steamair]

Here is the completed Lil Mo vertical I have just finished, a 100 day plus project. Engine was supplier's number 2 produced set of castings with extremely poor BP's, many were shop sketches. Lots of difficulties constructing with redesign of several components along the way. Cylinder is Cast iron and currently using a fitted and ring less Delrin piston. Not sure how long that will last as piston is showing signs of abrasion wear, application of lube has made that better so far, will probably go yo an O ring piston next.
Currently running on compressed air, one of these days will get around to building a boiler. Wood mounting base and painting is next. Hope to post a running video soon.
Bob E