Rudy Kouhoupt built this sleek scale model V-4 steam engine. The four single-acting cylinders on this unusual engine have a bore of 7/8”, and accommodate pistons with a stroke of 7/8”. The admission and exhaust events are regulated by pressure-balanced inside admission piston valves, which operate with very low friction. The crankcase holds one cubic inch of oil in running order.

Exhibit added: November 17, 2023 - Last modified: February 5, 2024

Presented by The Joe Martin Foundation for Exceptional Craftsmanship