Model Encyclopedia - Bachmann China 1:87 DF11G Class Co-Co+Co-Co Diesel

Prototype Information

The DF11G's are the latest (and quite possibly the final) diesel type in the domestically produced Dong Feng series. They are essentially a pair of single ended DF11 locomotives permanently coupled to each other back to front to form a very powerful unit, capable of hauling the maximum sized passenger trains at high speed. The locomotives have had a facelift which gives a very modern more streamlined look to their DF11 counterparts and also have auxiliary motors to power the air-conditioning in the passenger cars, removing the need for a separate generator car. They were originally used solely on the Beijing - Shanghai route, but as electrification began to be spread across the network, many have been displaced to secondary lines and the entire class is somewhat threatened. Some select units have been split to run push pull passenger trains in Guangdong province (2020).  

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Production Summary

Model Review - First Series

General

These were Bachmann's first double unit and were produced at a time when the real DF11G's were the most modern diesel in the Chinese diesel fleet. Only a few versions were made for the first production run, a pair of twin units and a single unit version - odd at the time when these diesels ran strictly as a pair (It wasn't under the late 2010's when they began to run as push pull units for select services). I suspect the single unit version was produced on commission for Qishuyan locomotive factory to be given out as gifts. I have only ever seen a couple of these single unit versions hit the open market ever since they were released. 

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Details

The DF11G's ushered in a new level of detailing to Bachmann China's locomotive runs. There are many separately added parts such as e.m.u. plugs, fine scale airhoses, foot steps and grab irons. The paint work is very even, apart from a small amount of fuzz on the blue paint behind the cab (in between that and the red line). The sample of the second production run I saw has a high gloss even the late Billy Mays would find exciting. There is a very high amount of lettering which is all perfectly readable, although visual aids may be needed! The bogies look very similar to the standard DF11 releases, asides from the seperately added footsteps, appear to be a little on the shallow side, but being black in color, this doesn't seem to be as noticable as the lighter colored DF11's. The rubber diaphragms at the ends don't quite touch each other with the supplied drawbar connected between the units, there is a gap of approximately 2mm.

Performance

Unfortunately these are lacking in the performance department over other locomotives. The powered unit is quite a bit lighter than many of the full body style locomotives from Bachmann China and the dummy locomotive is quite heavy! The powered unit has been geared for high speed, however I would have much rathered pay the difference to have a dual powered unit as my layout has quite a few gradients on it, and high speed gearing doesn't substitute for this. For shorter trains or on level layouts/trackwork, they run very nicely - smooth and quiet. I've had some issues with the cable which connects both cars together. It is a bit too long, and often catches on the drawbar, leading to derailments or a bit of a jump as it traverses through point work. The deep wheel flanges, an annoying Bachmann China trend also 'hop' through my Peco code 83 point work (Code 100 is no problem).

Electronics

The main headlight color is a very odd green/orange color. Naturally, these look nothing like the headlights used on the real engines! There is plenty of room inside for a decoder, (or more weight for increased pulling power!) and there are some small holes drilled through the bottom of the fuel tanks, presumably for speakers.

Couplers

I've not converted the couplers on this model yet, however it seems to be a very straight forward swap with Kadee #5/#58/#158's for close coupling, although for those with layouts with very tight curves, I would recommend using #56/#156 long shank couplers to prevent jack-knifing.

Model Review - Second Series

General

I have not been able to review the second series of these locomotives to date. 

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