I am making a Farm Boy as well and have a question. Does a bushing have to be make for the Push Rod Roller? The roller has a .125" id and the screw that hold it is a 2-56 screw.
I need help getting my Flame eater engine to work. It is from Bengs Modellbau. The engine has great (compression/vacuum) and I have timed it according the plans provided. The intake valve goes up to its highest point. The silicone ball which acts as the exhaust valve seems to be moving (I...