I made a Wobbler! A single acting, oscillating air engine, to be precise. I was inspired by the amazing Tubalcain, who’s YouTube channel has been the source of many top tips and the cause of many late nights. Though the design of the wobbler wasn’t new to me, the old Mamod steam engine I had when I was a kid used the same principle.
The wobbler is probably the simplest engine design there is. I tried to to a nice job of this one, though didn’t go overboard with the look of the thing – I don’t see the point of pretending it’s not made from some bits and bobs I has knocking about in the garage! Here are some photos: