Engine Support Structure

      The Lister engine is a single-cylinder, four-stroke, low RPM engine.   As a result, power is only being supplied every during one stroke every other rotation, which is roughly 12.5%.  Consequently, the Lister is a rough running engine.   It is necessary to consider these vibrations when building the engine support.  For this reason, the engine support structure has been extremely overbuilt.   

      The frame is a welded 2” by 48” 14 gauge steel box-beam frame with cross support under the engine.    The design was chosen because it provides a good base for the engine and creates a base with proper alignment for the alternator stand.  The frame is anchored to the floor with large lead anchors and 3/8” hardware.  In order to isolate the vibration, pieces of ½” thick of rubber sheet have been placed in between the frame and the floor.  The engine sits on four ½” steel studs which bolt to engine mounts.   Each neoprene dome style engine mount has a 925 lb or 70A durometer load rating.