Modelling TH&B Gas-Electric #301

One of the most asked-about cars on the TH&B was gas-electric (aka "doodlebug") number 301. This is a brief look at the car from the point of view of the modeller, with a rough sketch by John Spring (based on the Bachmann instruction diagrams) showing the kitbash of the Bachmann Spectrum HO scale model. This model has gotten mixed reviews from the opinionated bunch on the various mailing lists and usenet newsgroups. The bottom line seems to be that Bachmann's quality control is variable: always test-run a Spectrum model before you buy.

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This photo dated 1936, from the Keith Sirman collection, shows 301 in pristine condition passing under the coaling tower at Chatham St. in Hamilton.
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This photo provided by Keith Sirman, shows car 301 at Waterford, Ontario in 1938 or 1939.
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This undated Keith Sirman collection photograph, is probably a builder's photo before they airbrushed the background out. (I expect to be corrected about the actual technique used in the 1920's, but you get the idea.)
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Click to enlarge
This graphic shows the basic changes to the shell of the Bachmann Spectrum Gas-Electric model in HO scale (rumours abound that an N scale version will be developed in 1998). Basically, you need to reduce the length of the body by a total of 12 feet by taking out a portion just behind the cab and another portion including the front-most passenger window. This will give you a shell which is reasonably close to the prototype length, but leaving as much of the moulded-in detail in place as possible. The detailing on the roof above the cab differs from the stock model, so you'll need to make some modifications (use the photos above, or better yet, purchase prints which show the exact view you need). The front of the cab must be reconstructed, either by using scratchbuilt parts or by scavenging for a larger scale automotive-style grille (John Spring is following this direction). Other changes you may want to make, depending on how accurate you intend to be, include moving the rear truck closer to the end and reshaping the roofline to more closely match 301.

Last Modified: February 15, 2017