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Here’s a new train MOC, a prototype Class 14 diesel loco.
It uses BBB wheels and is articulated to get round the curves.
It uses 2 technic gearmotors for power, so it has an electric feed from an
adjacent vehicle with a train motor (not yet constructed).
Pictures of the real loco can be seen here:
http://www.preserved-diesels.co.uk/engines/14/index.htm
I used cams for the counterweights on the jackshaft (the shaft from the engine
that moves the rods to drive the wheels). There are two ‘bogies’ - one with
four wheels and the other with two wheels and the jackshaft.
The bevel gears are this way round so that the wheels stay aligned when the
articulation moves on the curves. This can lead to a certain amount of
torque-steer - the bevel gears want to move the articulation when power is
applied, but not so much as to derail the loco.
The loco also has extending flex system rods and sprung couplings.
Since the green bricks are a mock-up of the shape, there are inside and
underneath views here: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=121842
I’ll probably do the ‘wasp’ ends with 1x4 diagonal stripe tiles.
PLMKWYT
Mark
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Message has 1 Reply:
 | | Re: New MOC: Prototype Class 14 Diesel Loco with BBB Wheels
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| (...) Very nice! (...) From my experience, the hardest part of doing that is matching the speed of the supply car. I actually ended up putting a rubber band drive in my loco to allow some slip, and gearing so it was faster than the train motor. The (...) (19 years ago, 27-Mar-05, to lugnet.trains, FTX)
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