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

GP7-ish Cab

Atlas O scale U23B Cab This was my starting point to design my own cab. Andrew Gillette supplied me with the cab so I could then design everything around that cab and the SD40-2 chassis. While Andrew wanted the more modern SD40-2 cab I like the idea of first generation diesels and created what I...

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Sketchup Examples

Vehicles etc.» O scale Narrow Gauge Road...» Athearn SD40-2» Sketchup Examples» Hood Examples On the left we have my MicroMimesis GP7-ish high-hood cab with the first draft of a high-hood to go with it. Note that the hood is 1.21" wide per earlier discussion. The front deck is .625" (30" full-scale) wide. On the right...

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BB Section

BB Section? As good a name as any for now. It stands for 'Battery Box Section' - meaning the area above the frame and below the cab. Version 4A - 1mm Radius Waking up this morning I was looking at photographs of GP-7 locomotives and having my first cup of coffee and realized that the...

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Long and Short Hoods

Vehicles etc.» O scale Narrow Gauge Road...» Athearn SD40-2» Long and Short Hoods» Hood Examples On the left we have my MicroMimesis GP7-ish high-hood cab with the first draft of a high-hood to go with it. Note that the hood is 1.21" wide per earlier discussion. The front deck is .625" (30" full-scale) wide. On...

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OTM Parts

Calling this OTM Parts .. meaning "Other Than Me" Parts .. other Shapeways printed parts and other aftermarket sources that were scrounge around the interweb Athearn SD40-2 GP7-ish Cab 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...

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SD-40-2 Mechanism

Narrow Gauge Road Engine - 6 axle - part 1 I was talking to my friend Andrew Gillette one day about the possibility of using my Prusa i3 MK3 3D printer to create modern style On30 Road Engines. This isn't anything new - On30 itself developed from using HO mechanisms with O scale shells to...

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