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The new Lego remote-controlled (RC) trains use train wheels with Technic axle
holes (only in the wheels connected to the motor, unfortunately). This creates
an opportunity to power a train using essentially any Technic or Mindstorms
motor, not just the highlyl-specialized train motors.
This is my first attempt to build a Technic-powered train. The main construction
is the powered bogie track. It is about the same size as the RC train motor, and
in particular, the distance between the axles is exactly the same. It is seven
Lego units wide, one unit wider than most Lego trains, but a width that makes
sense for studless construction, since most of the studless beams have odd
lengths. The height of the bogie is one plate higher than the height of the RC
train motor. The construction is high enough off the track to allow it to move
freely, even across switch points.
This bogie truck has an axle protroduing up. This axle both powers the wheels,
and pulls the engine (the locomotive). The top of this truck is flat, allowing
it to rotate freely under the engine. The powered bogie truck The axle of the
powered bogie powers all four wheels, just like the Lego train motors.
I posted complete building
instructions.
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Message has 1 Reply:
 | | Re: A Technic Train
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| Nifty work there! It definetly looks fun, and makes me want to get some of those wheels. Without a differential, does it suffer on curves(1)? The only work around I can think of would be to only power one side of each axle, or put the gearing the (...) (17 years ago, 8-Apr-07, to lugnet.trains, lugnet.technic, lugnet.robotics, FTX)
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