The number 8 is Weedens only true beam engine. The engine is similar to an oscillator except the cylinder is stationary, and the valve plate (thin sheet brass between the cylinder and steam chest) does the oscillating. Bought as a basket case. Completely disassembled, cleaned, painted, and re-nickel plated. Initially a bit tricky to adjust and time, she has become a fine runner. The restoration thread is http://modelsteam.myfreeforum.org/about84888.html&highlight=