[breadcrumb] HO Athearn SD40-2 ATSF 5114 Andrew Gillette gave me this engine to use as the mechanism for a On30 Road Engine. The important is the mechanism. The plan is to wrap a shell around this. Model 1 – Phase 1 O scale Narrow Gauge Road Engines On30 Road Engine Concept and Restrictions Life Like GP30 Athearn SD40-2 Sketchup Examples BB Section Long and Short Hoods Test Printing the Short Hood Test Printing the Long Hood – V1 to V1C Test Printing the Long Hood – V2 to V3 Test Printing the Long Hood – V4 OTM Parts Atlas O scale U23B Parts SP Original Headlight Cluster Pack SD-40-2 Mechanism